Components
24
Twig Components
74
Render Count
490
ms
Render Time
12.0
MiB
Memory Usage
Components
Render calls
entry | App\Twig\Components\EntryComponent | 12.0 MiB | 43.98 ms | |
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""" +type: "article" +lang: "en" +isOc: false +hasEmbed: false +commentCount: 4 +favouriteCount: 1 +score: 0 +isAdult: false +sticky: false +lastActive: DateTime @1688761530 {#2418 : 2023-07-07 22:25:30.0 +02:00 } +ip: null +adaAmount: 0 +tags: null +mentions: null +comments: Doctrine\ORM\PersistentCollection {#1688 …} +votes: Doctrine\ORM\PersistentCollection {#1966 …} +reports: Doctrine\ORM\PersistentCollection {#1965 …} +favourites: Doctrine\ORM\PersistentCollection {#1368 …} +notifications: Doctrine\ORM\PersistentCollection {#2426 …} +badges: Doctrine\ORM\PersistentCollection {#2439 …} +children: [] -id: 875 -titleTs: "'actual':10 'circuit':3 'hr202':7 'humid':8 'sensor':9 'use':5 'work':11 'would':1" -bodyTs: "'/pictrs/image/e2575314-be01-4a3f-bab2-cc75811b3ce8.png)':3 '1.5':44 'ac':43,56 'adc':85 'alreadi':27 'arduino':13,83 'briefli':74 'challeng':20 'circuit':53,88 'could':86 'creat':50 'discuss.tchncs.de':2 'discuss.tchncs.de/pictrs/image/e2575314-be01-4a3f-bab2-cc75811b3ce8.png)':1 'easier':31 'easier-to-us':30 'help':81 'high':68 'hr202':8,18 'littl':52 'll':59 'make':23 'max':46 'moistur':9 'oscil':65 'output':66 'pick':16 'provid':55 'read':61,72 'run':6,41 'sensor':10,38 'sht40':34 'stock':36 'thank':90 'time':78 'use':33 've':49 'vpeak':45 'wanna':5 'work':25,89 'yes':14" +cross: false +upVotes: 0 +downVotes: 0 +ranking: 1688598501 +visibility: "visible " +apId: "https://discuss.tchncs.de/post/505309" +editedAt: null +createdAt: DateTimeImmutable @1688582501 {#1858 : 2023-07-05 20:41:41.0 +02:00 } } "isSingle" => true "showShortSentence" => false "showBody" => true ] |
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Component | App\Twig\Components\EntryComponent {#2955 -authorizationChecker: Symfony\Component\Security\Core\Authorization\AuthorizationChecker {#931 …} -newCommentMarkerCount: App\Kbin\NewCommentMarker\NewCommentMarkerCount {#2956 …} -cache: Symfony\Component\Cache\Adapter\TraceableTagAwareAdapter {#600 …} -twig: Twig\Environment {#1252 …} -requestStack: Symfony\Component\HttpFoundation\RequestStack {#1328 …} -security: Symfony\Bundle\SecurityBundle\Security {#1101 …} +entry: App\Entity\Entry {#2412 +user: Proxies\__CG__\App\Entity\User {#1978 +avatar: null +cover: null +email: "macusking@discuss.tchncs.de" +username: "@macusking@discuss.tchncs.de" +roles: [] +followersCount: 0 +homepage: "front" +about: null +lastActive: DateTime @1688762258 {#1515 : 2023-07-07 22:37:38.0 +02:00 } +markedForDeletionAt: null +fields: null +oauthGithubId: null +oauthGoogleId: null +oauthFacebookId: null +oauthKeycloakId: null +hideAdult: true +showSubscribedUsers: true +showSubscribedMagazines: true 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+name: "askelectronics@discuss.tchncs.de" +title: "askelectronics" +description: """ **For questions about component-level electronic circuits, tools and equipment.**\n \n Rules\n -----\n \n 1: Be nice.\n \n 2: Be on-topic (eg: *Electronic*, not *electrical*).\n \n 3: No commercial stuff, buying, selling or valuations.\n \n 4: Be safe.\n \n --- """ +rules: null +subscriptionsCount: 1 +entryCount: 154 +entryCommentCount: 1230 +postCount: 1 +postCommentCount: 4 +isAdult: false +customCss: null +lastActive: DateTime @1729413608 {#274 : 2024-10-20 10:40:08.0 +02:00 } +markedForDeletionAt: null +tags: null +moderators: Doctrine\ORM\PersistentCollection {#236 …} +ownershipRequests: Doctrine\ORM\PersistentCollection {#232 …} +moderatorRequests: Doctrine\ORM\PersistentCollection {#221 …} +entries: Doctrine\ORM\PersistentCollection {#179 …} +posts: Doctrine\ORM\PersistentCollection {#137 …} +subscriptions: Doctrine\ORM\PersistentCollection {#199 …} +bans: Doctrine\ORM\PersistentCollection {#116 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+slug: "Would-this-circuit-to-use-an-HR202-humidity-sensor-actually" +title: "Would this circuit to use an HR202 humidity sensor actually work?" +url: null +body: """ \n \n I wanna run a HR202 moisture sensor and an Arduino. Yes, I picked a HR202 to challenge myself to make it work. I already have some easier-to-use SHT40 in stock.\n \n This sensor can only run with AC 1.5Vpeak max. So, I’ve created this little circuit to provide AC, and I’ll only read it when the oscillator output is HIGH, so I can read it briefly at the same time with the help of Arduino’s ADC. Could this circuit work? Thank you. """ +type: "article" +lang: "en" +isOc: false +hasEmbed: false +commentCount: 4 +favouriteCount: 1 +score: 0 +isAdult: false +sticky: false +lastActive: DateTime @1688761530 {#2418 : 2023-07-07 22:25:30.0 +02:00 } +ip: null +adaAmount: 0 +tags: null +mentions: null +comments: Doctrine\ORM\PersistentCollection {#1688 …} +votes: Doctrine\ORM\PersistentCollection {#1966 …} +reports: Doctrine\ORM\PersistentCollection {#1965 …} +favourites: Doctrine\ORM\PersistentCollection {#1368 …} +notifications: Doctrine\ORM\PersistentCollection {#2426 …} +badges: Doctrine\ORM\PersistentCollection {#2439 …} +children: [] -id: 875 -titleTs: "'actual':10 'circuit':3 'hr202':7 'humid':8 'sensor':9 'use':5 'work':11 'would':1" -bodyTs: "'/pictrs/image/e2575314-be01-4a3f-bab2-cc75811b3ce8.png)':3 '1.5':44 'ac':43,56 'adc':85 'alreadi':27 'arduino':13,83 'briefli':74 'challeng':20 'circuit':53,88 'could':86 'creat':50 'discuss.tchncs.de':2 'discuss.tchncs.de/pictrs/image/e2575314-be01-4a3f-bab2-cc75811b3ce8.png)':1 'easier':31 'easier-to-us':30 'help':81 'high':68 'hr202':8,18 'littl':52 'll':59 'make':23 'max':46 'moistur':9 'oscil':65 'output':66 'pick':16 'provid':55 'read':61,72 'run':6,41 'sensor':10,38 'sht40':34 'stock':36 'thank':90 'time':78 'use':33 've':49 'vpeak':45 'wanna':5 'work':25,89 'yes':14" +cross: false +upVotes: 0 +downVotes: 0 +ranking: 1688598501 +visibility: "visible " +apId: "https://discuss.tchncs.de/post/505309" +editedAt: null +createdAt: DateTimeImmutable @1688582501 {#1858 : 2023-07-05 20:41:41.0 +02:00 } } +isSingle: true +showShortSentence: false +showBody: true +showMagazineName: false +canSeeTrash: false +newComments: 0 } |
user_inline | App\Twig\Components\UserInlineComponent | 12.0 MiB | 0.32 ms | |
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Component | App\Twig\Components\UserInlineComponent {#3116 +user: Proxies\__CG__\App\Entity\User {#1978 +avatar: null +cover: null +email: "macusking@discuss.tchncs.de" +username: "@macusking@discuss.tchncs.de" +roles: [] +followersCount: 0 +homepage: "front" +about: null +lastActive: DateTime @1688762258 {#1515 : 2023-07-07 22:37:38.0 +02:00 } +markedForDeletionAt: null +fields: null +oauthGithubId: null +oauthGoogleId: null +oauthFacebookId: null +oauthKeycloakId: null +hideAdult: true +showSubscribedUsers: true +showSubscribedMagazines: true +showSubscribedDomains: true +preferredLanguages: [] +featuredMagazines: null +showProfileSubscriptions: true +showProfileFollowings: true +markNewComments: false +notifyOnNewEntry: false +notifyOnNewEntryReply: false +notifyOnNewEntryCommentReply: false +notifyOnNewPost: false +notifyOnNewPostReply: false +notifyOnNewPostCommentReply: false +addMentionsEntries: false +addMentionsPosts: true +isBanned: false +isVerified: false +isDeleted: false +isBot: false +spamProtection: true +customCss: null +ignoreMagazinesCustomCss: false +moderatorTokens: Doctrine\ORM\PersistentCollection {#1519 …} +magazineOwnershipRequests: Doctrine\ORM\PersistentCollection {#1517 …} +moderatorRequests: Doctrine\ORM\PersistentCollection {#1623 …} +entries: Doctrine\ORM\PersistentCollection {#1406 …} +entryVotes: Doctrine\ORM\PersistentCollection {#1713 …} +entryComments: Doctrine\ORM\PersistentCollection {#1710 …} +entryCommentVotes: Doctrine\ORM\PersistentCollection {#1474 …} +posts: Doctrine\ORM\PersistentCollection {#1745 …} +postVotes: Doctrine\ORM\PersistentCollection {#1485 …} +postComments: Doctrine\ORM\PersistentCollection {#1759 …} +postCommentVotes: Doctrine\ORM\PersistentCollection {#1637 …} +subscriptions: Doctrine\ORM\PersistentCollection {#1475 …} +subscribedDomains: Doctrine\ORM\PersistentCollection {#1636 …} +follows: Doctrine\ORM\PersistentCollection {#1409 …} +followers: Doctrine\ORM\PersistentCollection {#1624 …} +blocks: Doctrine\ORM\PersistentCollection {#1425 …} +blockers: Doctrine\ORM\PersistentCollection {#1441 …} +blockedMagazines: Doctrine\ORM\PersistentCollection {#1460 …} +blockedDomains: Doctrine\ORM\PersistentCollection {#1439 …} +reports: Doctrine\ORM\PersistentCollection {#1416 …} +favourites: Doctrine\ORM\PersistentCollection {#1430 …} +violations: Doctrine\ORM\PersistentCollection {#1694 …} +notifications: Doctrine\ORM\PersistentCollection {#1700 …} +awards: Doctrine\ORM\PersistentCollection {#1434 …} +subscribedCategories: Doctrine\ORM\PersistentCollection {#1610 …} +categories: Doctrine\ORM\PersistentCollection {#1640 …} -id: 19399 -password: "$2y$13$GtA6yJr0SHJf/70Uom7/xuVlLxced/g77qbWw1CPRQVbQEuUFzyGS" -totpSecret: null -totpBackupCodes: [] -oAuth2UserConsents: Doctrine\ORM\PersistentCollection {#1669 …} +apId: "macusking@discuss.tchncs.de" +apProfileId: "https://discuss.tchncs.de/u/macusking" +apPublicUrl: "https://discuss.tchncs.de/u/macusking" +apFollowersUrl: null +apInboxUrl: "https://discuss.tchncs.de/inbox" +apDomain: "discuss.tchncs.de" +apPreferredUsername: "macusking" +apDiscoverable: true +apManuallyApprovesFollowers: false +privateKey: null +publicKey: null +apFetchedAt: DateTime @1688761497 {#1516 : 2023-07-07 22:24:57.0 +02:00 } +apDeletedAt: null +apTimeoutAt: null +visibility: "visible " +createdAt: DateTimeImmutable @1688582502 {#1518 : 2023-07-05 20:41:42.0 +02:00 } +__isInitialized__: true …2 } +showAvatar: false } |
date | App\Twig\Components\DateComponent | 12.0 MiB | 0.40 ms | |
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Input props | [ "date" => DateTimeImmutable @1688582501 {#1858 : 2023-07-05 20:41:41.0 +02:00 } ] |
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Component | App\Twig\Components\DateComponent {#3186 +date: DateTimeImmutable @1688582501 {#1858 : 2023-07-05 20:41:41.0 +02:00 } } |
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""" +type: "article" +lang: "en" +isOc: false +hasEmbed: false +commentCount: 4 +favouriteCount: 1 +score: 0 +isAdult: false +sticky: false +lastActive: DateTime @1688761530 {#2418 : 2023-07-07 22:25:30.0 +02:00 } +ip: null +adaAmount: 0 +tags: null +mentions: null +comments: Doctrine\ORM\PersistentCollection {#1688 …} +votes: Doctrine\ORM\PersistentCollection {#1966 …} +reports: Doctrine\ORM\PersistentCollection {#1965 …} +favourites: Doctrine\ORM\PersistentCollection {#1368 …} +notifications: Doctrine\ORM\PersistentCollection {#2426 …} +badges: Doctrine\ORM\PersistentCollection {#2439 …} +children: [] -id: 875 -titleTs: "'actual':10 'circuit':3 'hr202':7 'humid':8 'sensor':9 'use':5 'work':11 'would':1" -bodyTs: "'/pictrs/image/e2575314-be01-4a3f-bab2-cc75811b3ce8.png)':3 '1.5':44 'ac':43,56 'adc':85 'alreadi':27 'arduino':13,83 'briefli':74 'challeng':20 'circuit':53,88 'could':86 'creat':50 'discuss.tchncs.de':2 'discuss.tchncs.de/pictrs/image/e2575314-be01-4a3f-bab2-cc75811b3ce8.png)':1 'easier':31 'easier-to-us':30 'help':81 'high':68 'hr202':8,18 'littl':52 'll':59 'make':23 'max':46 'moistur':9 'oscil':65 'output':66 'pick':16 'provid':55 'read':61,72 'run':6,41 'sensor':10,38 'sht40':34 'stock':36 'thank':90 'time':78 'use':33 've':49 'vpeak':45 'wanna':5 'work':25,89 'yes':14" +cross: false +upVotes: 0 +downVotes: 0 +ranking: 1688598501 +visibility: "visible " +apId: "https://discuss.tchncs.de/post/505309" +editedAt: null +createdAt: DateTimeImmutable @1688582501 {#1858 : 2023-07-05 20:41:41.0 +02:00 } } +magazine: App\Entity\Magazine {#264} +image: null +parent: null +root: null +body: "I’m assuming that those "v"s are meters and not constant voltage sources. A 2.4v zener does NOT have exactly 2.4v across it. A 1.2 v supply will not be precisely 1.2v. Both will also vary with time and temperature. 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+name: "askelectronics@discuss.tchncs.de" +title: "askelectronics" +description: """ **For questions about component-level electronic circuits, tools and equipment.**\n \n Rules\n -----\n \n 1: Be nice.\n \n 2: Be on-topic (eg: *Electronic*, not *electrical*).\n \n 3: No commercial stuff, buying, selling or valuations.\n \n 4: Be safe.\n \n --- """ +rules: null +subscriptionsCount: 1 +entryCount: 154 +entryCommentCount: 1230 +postCount: 1 +postCommentCount: 4 +isAdult: false +customCss: null +lastActive: DateTime @1729413608 {#274 : 2024-10-20 10:40:08.0 +02:00 } +markedForDeletionAt: null +tags: null +moderators: Doctrine\ORM\PersistentCollection {#236 …} +ownershipRequests: Doctrine\ORM\PersistentCollection {#232 …} +moderatorRequests: Doctrine\ORM\PersistentCollection {#221 …} +entries: Doctrine\ORM\PersistentCollection {#179 …} +posts: Doctrine\ORM\PersistentCollection {#137 …} +subscriptions: Doctrine\ORM\PersistentCollection {#199 …} +bans: Doctrine\ORM\PersistentCollection {#116 …} +reports: Doctrine\ORM\PersistentCollection {#102 …} +badges: Doctrine\ORM\PersistentCollection {#80 …} +logs: Doctrine\ORM\PersistentCollection {#70 …} +awards: Doctrine\ORM\PersistentCollection {#1360 …} +categories: Doctrine\ORM\PersistentCollection {#1792 …} -id: 11 +apId: "askelectronics@discuss.tchncs.de" +apProfileId: "https://discuss.tchncs.de/c/askelectronics" +apPublicUrl: "https://discuss.tchncs.de/c/askelectronics" +apFollowersUrl: "https://discuss.tchncs.de/c/askelectronics/followers" +apInboxUrl: "https://discuss.tchncs.de/inbox" +apDomain: "discuss.tchncs.de" +apPreferredUsername: "askelectronics" +apDiscoverable: true +apManuallyApprovesFollowers: null +privateKey: null +publicKey: null +apFetchedAt: DateTime @1727247714 {#268 : 2024-09-25 09:01:54.0 +02:00 } +apDeletedAt: null +apTimeoutAt: null +visibility: "visible " +createdAt: DateTimeImmutable @1687144409 {#270 : 2023-06-19 05:13:29.0 +02:00 } } +image: null +domain: Proxies\__CG__\App\Entity\Domain {#1889 …} +slug: "Would-this-circuit-to-use-an-HR202-humidity-sensor-actually" +title: "Would this circuit to use an HR202 humidity sensor actually work?" +url: null +body: """ \n \n I wanna run a HR202 moisture sensor and an Arduino. Yes, I picked a HR202 to challenge myself to make it work. I already have some easier-to-use SHT40 in stock.\n \n This sensor can only run with AC 1.5Vpeak max. So, I’ve created this little circuit to provide AC, and I’ll only read it when the oscillator output is HIGH, so I can read it briefly at the same time with the help of Arduino’s ADC. Could this circuit work? Thank you. """ +type: "article" +lang: "en" +isOc: false +hasEmbed: false +commentCount: 4 +favouriteCount: 1 +score: 0 +isAdult: false +sticky: false +lastActive: DateTime @1688761530 {#2418 : 2023-07-07 22:25:30.0 +02:00 } +ip: null +adaAmount: 0 +tags: null +mentions: null +comments: Doctrine\ORM\PersistentCollection {#1688 …} +votes: Doctrine\ORM\PersistentCollection {#1966 …} +reports: Doctrine\ORM\PersistentCollection {#1965 …} +favourites: Doctrine\ORM\PersistentCollection {#1368 …} +notifications: Doctrine\ORM\PersistentCollection {#2426 …} +badges: Doctrine\ORM\PersistentCollection {#2439 …} +children: [] -id: 875 -titleTs: "'actual':10 'circuit':3 'hr202':7 'humid':8 'sensor':9 'use':5 'work':11 'would':1" -bodyTs: "'/pictrs/image/e2575314-be01-4a3f-bab2-cc75811b3ce8.png)':3 '1.5':44 'ac':43,56 'adc':85 'alreadi':27 'arduino':13,83 'briefli':74 'challeng':20 'circuit':53,88 'could':86 'creat':50 'discuss.tchncs.de':2 'discuss.tchncs.de/pictrs/image/e2575314-be01-4a3f-bab2-cc75811b3ce8.png)':1 'easier':31 'easier-to-us':30 'help':81 'high':68 'hr202':8,18 'littl':52 'll':59 'make':23 'max':46 'moistur':9 'oscil':65 'output':66 'pick':16 'provid':55 'read':61,72 'run':6,41 'sensor':10,38 'sht40':34 'stock':36 'thank':90 'time':78 'use':33 've':49 'vpeak':45 'wanna':5 'work':25,89 'yes':14" +cross: false +upVotes: 0 +downVotes: 0 +ranking: 1688598501 +visibility: "visible " +apId: "https://discuss.tchncs.de/post/505309" +editedAt: null +createdAt: DateTimeImmutable @1688582501 {#1858 : 2023-07-05 20:41:41.0 +02:00 } } +magazine: App\Entity\Magazine {#264} +image: null +parent: null +root: null +body: "I’m assuming that those "v"s are meters and not constant voltage sources. A 2.4v zener does NOT have exactly 2.4v across it. A 1.2 v supply will not be precisely 1.2v. Both will also vary with time and temperature. So, in practice there WILL be a dc component across the sensor - which will destroy it." +lang: "en" +isAdult: false +favouriteCount: 0 +score: 0 +lastActive: DateTime @1688761531 {#4029 : 2023-07-07 22:25:31.0 +02:00 } +ip: null +tags: null +mentions: [ "@macusking@discuss.tchncs.de" ] +children: Doctrine\ORM\PersistentCollection {#4018 …} +nested: Doctrine\ORM\PersistentCollection {#4016 …} +votes: Doctrine\ORM\PersistentCollection {#4014 …} +reports: Doctrine\ORM\PersistentCollection {#4012 …} +favourites: Doctrine\ORM\PersistentCollection {#3980 …} +notifications: Doctrine\ORM\PersistentCollection {#3984 …} -id: 8469 -bodyTs: "'1.2':28,35 '2.4':16,23 'across':25,54 'also':39 'assum':3 'compon':53 'constant':12 'dc':52 'destroy':59 'exact':22 'm':2 'meter':9 'practic':47 'precis':34 'sensor':56 'sourc':14 'suppli':30 'temperatur':44 'time':42 'v':6,17,24,29,36 'vari':40 'voltag':13 'zener':18" +ranking: 0 +commentCount: 0 +upVotes: 0 +downVotes: 0 +visibility: "visible " +apId: "https://discuss.tchncs.de/comment/661762" +editedAt: null +createdAt: DateTimeImmutable @1688586156 {#3965 : 2023-07-05 21:42:36.0 +02:00 } } +showMagazineName: false +showEntryTitle: false +showNested: true +level: 1 +canSeeTrash: false +dateAsUrl: false -requestStack: Symfony\Component\HttpFoundation\RequestStack {#1328 …} -authorizationChecker: Symfony\Component\Security\Core\Authorization\AuthorizationChecker {#931 …} } |
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"Would-this-circuit-to-use-an-HR202-humidity-sensor-actually" +title: "Would this circuit to use an HR202 humidity sensor actually work?" +url: null +body: """ \n \n I wanna run a HR202 moisture sensor and an Arduino. Yes, I picked a HR202 to challenge myself to make it work. I already have some easier-to-use SHT40 in stock.\n \n This sensor can only run with AC 1.5Vpeak max. So, I’ve created this little circuit to provide AC, and I’ll only read it when the oscillator output is HIGH, so I can read it briefly at the same time with the help of Arduino’s ADC. Could this circuit work? Thank you. """ +type: "article" +lang: "en" +isOc: false +hasEmbed: false +commentCount: 4 +favouriteCount: 1 +score: 0 +isAdult: false +sticky: false +lastActive: DateTime @1688761530 {#2418 : 2023-07-07 22:25:30.0 +02:00 } +ip: null +adaAmount: 0 +tags: null +mentions: null +comments: Doctrine\ORM\PersistentCollection {#1688 …} +votes: Doctrine\ORM\PersistentCollection {#1966 …} +reports: Doctrine\ORM\PersistentCollection {#1965 …} +favourites: Doctrine\ORM\PersistentCollection {#1368 …} +notifications: Doctrine\ORM\PersistentCollection {#2426 …} +badges: Doctrine\ORM\PersistentCollection {#2439 …} +children: [] -id: 875 -titleTs: "'actual':10 'circuit':3 'hr202':7 'humid':8 'sensor':9 'use':5 'work':11 'would':1" -bodyTs: "'/pictrs/image/e2575314-be01-4a3f-bab2-cc75811b3ce8.png)':3 '1.5':44 'ac':43,56 'adc':85 'alreadi':27 'arduino':13,83 'briefli':74 'challeng':20 'circuit':53,88 'could':86 'creat':50 'discuss.tchncs.de':2 'discuss.tchncs.de/pictrs/image/e2575314-be01-4a3f-bab2-cc75811b3ce8.png)':1 'easier':31 'easier-to-us':30 'help':81 'high':68 'hr202':8,18 'littl':52 'll':59 'make':23 'max':46 'moistur':9 'oscil':65 'output':66 'pick':16 'provid':55 'read':61,72 'run':6,41 'sensor':10,38 'sht40':34 'stock':36 'thank':90 'time':78 'use':33 've':49 'vpeak':45 'wanna':5 'work':25,89 'yes':14" +cross: false +upVotes: 0 +downVotes: 0 +ranking: 1688598501 +visibility: "visible " +apId: "https://discuss.tchncs.de/post/505309" +editedAt: null +createdAt: DateTimeImmutable @1688582501 {#1858 : 2023-07-05 20:41:41.0 +02:00 } } +magazine: App\Entity\Magazine {#264} +image: null +parent: null +root: null +body: "I’m assuming that those "v"s are meters and not constant voltage sources. A 2.4v zener does NOT have exactly 2.4v across it. A 1.2 v supply will not be precisely 1.2v. Both will also vary with time and temperature. So, in practice there WILL be a dc component across the sensor - which will destroy it." +lang: "en" +isAdult: false +favouriteCount: 0 +score: 0 +lastActive: DateTime @1688761531 {#4029 : 2023-07-07 22:25:31.0 +02:00 } +ip: null +tags: null +mentions: [ "@macusking@discuss.tchncs.de" ] +children: Doctrine\ORM\PersistentCollection {#4018 …} +nested: Doctrine\ORM\PersistentCollection {#4016 …} +votes: Doctrine\ORM\PersistentCollection {#4014 …} +reports: Doctrine\ORM\PersistentCollection {#4012 …} +favourites: Doctrine\ORM\PersistentCollection {#3980 …} +notifications: Doctrine\ORM\PersistentCollection {#3984 …} -id: 8469 -bodyTs: "'1.2':28,35 '2.4':16,23 'across':25,54 'also':39 'assum':3 'compon':53 'constant':12 'dc':52 'destroy':59 'exact':22 'm':2 'meter':9 'practic':47 'precis':34 'sensor':56 'sourc':14 'suppli':30 'temperatur':44 'time':42 'v':6,17,24,29,36 'vari':40 'voltag':13 'zener':18" +ranking: 0 +commentCount: 0 +upVotes: 0 +downVotes: 0 +visibility: "visible " +apId: "https://discuss.tchncs.de/comment/661762" +editedAt: null +createdAt: DateTimeImmutable @1688586156 {#3965 : 2023-07-05 21:42:36.0 +02:00 } } ] |
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""" +type: "article" +lang: "en" +isOc: false +hasEmbed: false +commentCount: 4 +favouriteCount: 1 +score: 0 +isAdult: false +sticky: false +lastActive: DateTime @1688761530 {#2418 : 2023-07-07 22:25:30.0 +02:00 } +ip: null +adaAmount: 0 +tags: null +mentions: null +comments: Doctrine\ORM\PersistentCollection {#1688 …} +votes: Doctrine\ORM\PersistentCollection {#1966 …} +reports: Doctrine\ORM\PersistentCollection {#1965 …} +favourites: Doctrine\ORM\PersistentCollection {#1368 …} +notifications: Doctrine\ORM\PersistentCollection {#2426 …} +badges: Doctrine\ORM\PersistentCollection {#2439 …} +children: [] -id: 875 -titleTs: "'actual':10 'circuit':3 'hr202':7 'humid':8 'sensor':9 'use':5 'work':11 'would':1" -bodyTs: "'/pictrs/image/e2575314-be01-4a3f-bab2-cc75811b3ce8.png)':3 '1.5':44 'ac':43,56 'adc':85 'alreadi':27 'arduino':13,83 'briefli':74 'challeng':20 'circuit':53,88 'could':86 'creat':50 'discuss.tchncs.de':2 'discuss.tchncs.de/pictrs/image/e2575314-be01-4a3f-bab2-cc75811b3ce8.png)':1 'easier':31 'easier-to-us':30 'help':81 'high':68 'hr202':8,18 'littl':52 'll':59 'make':23 'max':46 'moistur':9 'oscil':65 'output':66 'pick':16 'provid':55 'read':61,72 'run':6,41 'sensor':10,38 'sht40':34 'stock':36 'thank':90 'time':78 'use':33 've':49 'vpeak':45 'wanna':5 'work':25,89 'yes':14" +cross: false +upVotes: 0 +downVotes: 0 +ranking: 1688598501 +visibility: "visible " +apId: "https://discuss.tchncs.de/post/505309" +editedAt: null +createdAt: DateTimeImmutable @1688582501 {#1858 : 2023-07-05 20:41:41.0 +02:00 } } +magazine: App\Entity\Magazine {#264} +image: null +parent: null +root: null +body: "I’m assuming that those "v"s are meters and not constant voltage sources. 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+name: "askelectronics@discuss.tchncs.de" +title: "askelectronics" +description: """ **For questions about component-level electronic circuits, tools and equipment.**\n \n Rules\n -----\n \n 1: Be nice.\n \n 2: Be on-topic (eg: *Electronic*, not *electrical*).\n \n 3: No commercial stuff, buying, selling or valuations.\n \n 4: Be safe.\n \n --- """ +rules: null +subscriptionsCount: 1 +entryCount: 154 +entryCommentCount: 1230 +postCount: 1 +postCommentCount: 4 +isAdult: false +customCss: null +lastActive: DateTime @1729413608 {#274 : 2024-10-20 10:40:08.0 +02:00 } +markedForDeletionAt: null +tags: null +moderators: Doctrine\ORM\PersistentCollection {#236 …} +ownershipRequests: Doctrine\ORM\PersistentCollection {#232 …} +moderatorRequests: Doctrine\ORM\PersistentCollection {#221 …} +entries: Doctrine\ORM\PersistentCollection {#179 …} +posts: Doctrine\ORM\PersistentCollection {#137 …} +subscriptions: Doctrine\ORM\PersistentCollection {#199 …} +bans: Doctrine\ORM\PersistentCollection {#116 …} +reports: Doctrine\ORM\PersistentCollection {#102 …} +badges: Doctrine\ORM\PersistentCollection {#80 …} +logs: Doctrine\ORM\PersistentCollection {#70 …} +awards: Doctrine\ORM\PersistentCollection {#1360 …} +categories: Doctrine\ORM\PersistentCollection {#1792 …} -id: 11 +apId: "askelectronics@discuss.tchncs.de" +apProfileId: "https://discuss.tchncs.de/c/askelectronics" +apPublicUrl: "https://discuss.tchncs.de/c/askelectronics" +apFollowersUrl: "https://discuss.tchncs.de/c/askelectronics/followers" +apInboxUrl: "https://discuss.tchncs.de/inbox" +apDomain: "discuss.tchncs.de" +apPreferredUsername: "askelectronics" +apDiscoverable: true +apManuallyApprovesFollowers: null +privateKey: null +publicKey: null +apFetchedAt: DateTime @1727247714 {#268 : 2024-09-25 09:01:54.0 +02:00 } +apDeletedAt: null +apTimeoutAt: null +visibility: "visible " +createdAt: DateTimeImmutable @1687144409 {#270 : 2023-06-19 05:13:29.0 +02:00 } } +image: null +domain: Proxies\__CG__\App\Entity\Domain {#1889 …} +slug: "Would-this-circuit-to-use-an-HR202-humidity-sensor-actually" +title: "Would this circuit to use an HR202 humidity sensor actually work?" +url: null +body: """ \n \n I wanna run a HR202 moisture sensor and an Arduino. Yes, I picked a HR202 to challenge myself to make it work. I already have some easier-to-use SHT40 in stock.\n \n This sensor can only run with AC 1.5Vpeak max. So, I’ve created this little circuit to provide AC, and I’ll only read it when the oscillator output is HIGH, so I can read it briefly at the same time with the help of Arduino’s ADC. Could this circuit work? Thank you. """ +type: "article" +lang: "en" +isOc: false +hasEmbed: false +commentCount: 4 +favouriteCount: 1 +score: 0 +isAdult: false +sticky: false +lastActive: DateTime @1688761530 {#2418 : 2023-07-07 22:25:30.0 +02:00 } +ip: null +adaAmount: 0 +tags: null +mentions: null +comments: Doctrine\ORM\PersistentCollection {#1688 …} +votes: Doctrine\ORM\PersistentCollection {#1966 …} +reports: Doctrine\ORM\PersistentCollection {#1965 …} +favourites: Doctrine\ORM\PersistentCollection {#1368 …} +notifications: Doctrine\ORM\PersistentCollection {#2426 …} +badges: Doctrine\ORM\PersistentCollection {#2439 …} +children: [] -id: 875 -titleTs: "'actual':10 'circuit':3 'hr202':7 'humid':8 'sensor':9 'use':5 'work':11 'would':1" -bodyTs: "'/pictrs/image/e2575314-be01-4a3f-bab2-cc75811b3ce8.png)':3 '1.5':44 'ac':43,56 'adc':85 'alreadi':27 'arduino':13,83 'briefli':74 'challeng':20 'circuit':53,88 'could':86 'creat':50 'discuss.tchncs.de':2 'discuss.tchncs.de/pictrs/image/e2575314-be01-4a3f-bab2-cc75811b3ce8.png)':1 'easier':31 'easier-to-us':30 'help':81 'high':68 'hr202':8,18 'littl':52 'll':59 'make':23 'max':46 'moistur':9 'oscil':65 'output':66 'pick':16 'provid':55 'read':61,72 'run':6,41 'sensor':10,38 'sht40':34 'stock':36 'thank':90 'time':78 'use':33 've':49 'vpeak':45 'wanna':5 'work':25,89 'yes':14" +cross: false +upVotes: 0 +downVotes: 0 +ranking: 1688598501 +visibility: "visible " +apId: "https://discuss.tchncs.de/post/505309" +editedAt: null +createdAt: DateTimeImmutable @1688582501 {#1858 : 2023-07-05 20:41:41.0 +02:00 } } +magazine: App\Entity\Magazine {#264} +image: null +parent: null +root: null +body: "I’m assuming that those "v"s are meters and not constant voltage sources. A 2.4v zener does NOT have exactly 2.4v across it. A 1.2 v supply will not be precisely 1.2v. Both will also vary with time and temperature. So, in practice there WILL be a dc component across the sensor - which will destroy it." +lang: "en" +isAdult: false +favouriteCount: 0 +score: 0 +lastActive: DateTime @1688761531 {#4029 : 2023-07-07 22:25:31.0 +02:00 } +ip: null +tags: null +mentions: [ "@macusking@discuss.tchncs.de" ] +children: Doctrine\ORM\PersistentCollection {#4018 …} +nested: Doctrine\ORM\PersistentCollection {#4016 …} +votes: Doctrine\ORM\PersistentCollection {#4014 …} +reports: Doctrine\ORM\PersistentCollection {#4012 …} +favourites: Doctrine\ORM\PersistentCollection {#3980 …} +notifications: Doctrine\ORM\PersistentCollection {#3984 …} -id: 8469 -bodyTs: "'1.2':28,35 '2.4':16,23 'across':25,54 'also':39 'assum':3 'compon':53 'constant':12 'dc':52 'destroy':59 'exact':22 'm':2 'meter':9 'practic':47 'precis':34 'sensor':56 'sourc':14 'suppli':30 'temperatur':44 'time':42 'v':6,17,24,29,36 'vari':40 'voltag':13 'zener':18" +ranking: 0 +commentCount: 0 +upVotes: 0 +downVotes: 0 +visibility: "visible " +apId: "https://discuss.tchncs.de/comment/661762" +editedAt: null +createdAt: DateTimeImmutable @1688586156 {#3965 : 2023-07-05 21:42:36.0 +02:00 } } +nestedComments: [ 8472 => App\Entity\EntryComment {#4048 +user: Proxies\__CG__\App\Entity\User {#1978 …2} +entry: App\Entity\Entry {#2412} +magazine: App\Entity\Magazine {#264} +image: null +parent: App\Entity\EntryComment {#4020} +root: App\Entity\EntryComment {#4020} +body: "Thank you. Do you recommend me something (circuit) else? The 2.4v zener would provide about 2.4v. To keep 1.2V exactly half of the zener produced by the zener, I was considering split its voltage with 2 x 10k resistor in series and feed into an opamp in buffer configuration, so even it the 2.4 reference changes a little bit, the other side of circuit would be always zener / 2." +lang: "en" +isAdult: false +favouriteCount: 0 +score: 0 +lastActive: DateTime @1688587916 {#4043 : 2023-07-05 22:11:56.0 +02:00 } +ip: null +tags: null +mentions: [ "@macusking@discuss.tchncs.de" "@Susan_B_Good@discuss.tchncs.de" ] +children: Doctrine\ORM\PersistentCollection {#4051 …} +nested: Doctrine\ORM\PersistentCollection {#4053 …} +votes: Doctrine\ORM\PersistentCollection {#4055 …} +reports: Doctrine\ORM\PersistentCollection {#4036 …} +favourites: Doctrine\ORM\PersistentCollection {#4034 …} +notifications: Doctrine\ORM\PersistentCollection {#4032 …} -id: 8472 -bodyTs: "'1.2':21 '10k':41 '2':39,72 '2.4':11,17,57 'alway':70 'bit':62 'buffer':51 'chang':59 'circuit':8,67 'configur':52 'consid':34 'els':9 'even':54 'exact':23 'feed':46 'half':24 'keep':20 'littl':61 'opamp':49 'produc':28 'provid':15 'recommend':5 'refer':58 'resistor':42 'seri':44 'side':65 'someth':7 'split':35 'thank':1 'v':12,18,22 'voltag':37 'would':14,68 'x':40 'zener':13,27,31,71" +ranking: 0 +commentCount: 0 +upVotes: 0 +downVotes: 0 +visibility: "visible " +apId: "https://discuss.tchncs.de/comment/662713" +editedAt: DateTimeImmutable @1688588351 {#4040 : 2023-07-05 22:19:11.0 +02:00 } +createdAt: DateTimeImmutable @1688587916 {#4038 : 2023-07-05 22:11:56.0 +02:00 } } 9042 => App\Entity\EntryComment {#4125 +user: Proxies\__CG__\App\Entity\User {#1978 …2} +entry: App\Entity\Entry {#2412} +magazine: App\Entity\Magazine {#264} +image: null +parent: App\Entity\EntryComment {#4103 +user: App\Entity\User {#3968} +entry: App\Entity\Entry {#2412} +magazine: App\Entity\Magazine {#264} +image: null +parent: App\Entity\EntryComment {#4048} +root: App\Entity\EntryComment {#4020} +body: "How I would do it is to use two digital IO pins on the processor to generate the reference square wave. Put the sensor plus a series precision resistor between them and just pull one IO pin high as the other is pulled low and then swap them. That presumes that IO pins can both source and sink IO current. Then take the junction between the two to an Analogue in pin. You get two measurements each cycle. Use a lookup table of values and interpolate between them. If you wanted more precision - add more series resistors of different values covering the range of humidity that you want to sense, going to different IO pins. So you can choose the IO pin pair that brings the centre point between sensor and resistor closest to the mid-voltage point. It’s effectively a balanced half bridge arrangement - using the precision of the resistors to determine overall measurement precision. OK it ties up several IO pins - but microcontrollers are so cheap, I’d probably just dedicate one to this sensor and that’s all that it would do." +lang: "en" +isAdult: false +favouriteCount: 1 +score: 0 +lastActive: DateTime @1688622526 {#4098 : 2023-07-06 07:48:46.0 +02:00 } +ip: null +tags: null +mentions: [ "@macusking@discuss.tchncs.de" "@Susan_B_Good@discuss.tchncs.de" ] +children: Doctrine\ORM\PersistentCollection {#4095 …} +nested: Doctrine\ORM\PersistentCollection {#4092 …} +votes: Doctrine\ORM\PersistentCollection {#4089 …} +reports: Doctrine\ORM\PersistentCollection {#4104 …} +favourites: Doctrine\ORM\PersistentCollection {#4106 …} +notifications: Doctrine\ORM\PersistentCollection {#4108 …} -id: 8568 -bodyTs: "'add':94 'analogu':70 'arrang':147 'balanc':144 'bridg':146 'bring':125 'centr':127 'cheap':170 'choos':119 'closest':133 'cover':101 'current':60 'cycl':78 'd':172 'dedic':175 'determin':155 'differ':99,113 'digit':10 'effect':142 'generat':17 'get':74 'go':111 'half':145 'high':38 'humid':105 'interpol':86 'io':11,36,52,59,114,121,164 'junction':64 'lookup':81 'low':44 'measur':76,157 'microcontrol':167 'mid':137 'mid-voltag':136 'ok':159 'one':35,176 'overal':156 'pair':123 'pin':12,37,53,72,115,122,165 'plus':25 'point':128,139 'precis':28,93,150,158 'presum':50 'probabl':173 'processor':15 'pull':34,43 'put':22 'rang':103 'refer':19 'resistor':29,97,132,153 'sens':110 'sensor':24,130,179 'seri':27,96 'sever':163 'sink':58 'sourc':56 'squar':20 'swap':47 'tabl':82 'take':62 'tie':161 'two':9,67,75 'use':8,79,148 'valu':84,100 'voltag':138 'want':91,108 'wave':21 'would':3,186" +ranking: 0 +commentCount: 0 +upVotes: 0 +downVotes: 0 +visibility: "visible " +apId: "https://discuss.tchncs.de/comment/678173" +editedAt: null +createdAt: DateTimeImmutable @1688622526 {#4101 : 2023-07-06 07:48:46.0 +02:00 } } +root: App\Entity\EntryComment {#4020} +body: "Thank you. I’ll try this approach!" +lang: "en" +isAdult: false +favouriteCount: 0 +score: 0 +lastActive: DateTime @1688761530 {#4120 : 2023-07-07 22:25:30.0 +02:00 } +ip: null +tags: null +mentions: [ "@macusking@discuss.tchncs.de" "@Susan_B_Good@discuss.tchncs.de" ] +children: Doctrine\ORM\PersistentCollection {#4117 …} +nested: Doctrine\ORM\PersistentCollection {#4114 …} +votes: Doctrine\ORM\PersistentCollection {#4112 …} +reports: Doctrine\ORM\PersistentCollection {#4126 …} +favourites: Doctrine\ORM\PersistentCollection {#4128 …} +notifications: Doctrine\ORM\PersistentCollection {#4130 …} -id: 9042 -bodyTs: "'approach':7 'll':4 'thank':1 'tri':5" +ranking: 0 +commentCount: 0 +upVotes: 0 +downVotes: 0 +visibility: "visible " +apId: "https://discuss.tchncs.de/comment/749520" +editedAt: null +createdAt: DateTimeImmutable @1688761530 {#4123 : 2023-07-07 22:25:30.0 +02:00 } } 8568 => App\Entity\EntryComment {#4103} ] +level: 1 +view: "tree" -entryCommentRepository: App\Repository\EntryCommentRepository {#555 …} -twig: Twig\Environment {#1252 …} -security: Symfony\Bundle\SecurityBundle\Security {#1101 …} -cache: Symfony\Component\Cache\Adapter\TraceableTagAwareAdapter {#600 …} -requestStack: Symfony\Component\HttpFoundation\RequestStack {#1328 …} } |
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Yes, I picked a HR202 to challenge myself to make it work. I already have some easier-to-use SHT40 in stock.\n \n This sensor can only run with AC 1.5Vpeak max. So, I’ve created this little circuit to provide AC, and I’ll only read it when the oscillator output is HIGH, so I can read it briefly at the same time with the help of Arduino’s ADC. Could this circuit work? Thank you. """ +type: "article" +lang: "en" +isOc: false +hasEmbed: false +commentCount: 4 +favouriteCount: 1 +score: 0 +isAdult: false +sticky: false +lastActive: DateTime @1688761530 {#2418 : 2023-07-07 22:25:30.0 +02:00 } +ip: null +adaAmount: 0 +tags: null +mentions: null +comments: Doctrine\ORM\PersistentCollection {#1688 …} +votes: Doctrine\ORM\PersistentCollection {#1966 …} +reports: Doctrine\ORM\PersistentCollection {#1965 …} +favourites: Doctrine\ORM\PersistentCollection {#1368 …} +notifications: Doctrine\ORM\PersistentCollection {#2426 …} +badges: Doctrine\ORM\PersistentCollection {#2439 …} +children: [] -id: 875 -titleTs: "'actual':10 'circuit':3 'hr202':7 'humid':8 'sensor':9 'use':5 'work':11 'would':1" -bodyTs: "'/pictrs/image/e2575314-be01-4a3f-bab2-cc75811b3ce8.png)':3 '1.5':44 'ac':43,56 'adc':85 'alreadi':27 'arduino':13,83 'briefli':74 'challeng':20 'circuit':53,88 'could':86 'creat':50 'discuss.tchncs.de':2 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A 2.4v zener does NOT have exactly 2.4v across it. A 1.2 v supply will not be precisely 1.2v. Both will also vary with time and temperature. So, in practice there WILL be a dc component across the sensor - which will destroy it." +lang: "en" +isAdult: false +favouriteCount: 0 +score: 0 +lastActive: DateTime @1688761531 {#4029 : 2023-07-07 22:25:31.0 +02:00 } +ip: null +tags: null +mentions: [ "@macusking@discuss.tchncs.de" ] +children: Doctrine\ORM\PersistentCollection {#4018 …} +nested: Doctrine\ORM\PersistentCollection {#4016 …} +votes: Doctrine\ORM\PersistentCollection {#4014 …} +reports: Doctrine\ORM\PersistentCollection {#4012 …} +favourites: Doctrine\ORM\PersistentCollection {#3980 …} +notifications: Doctrine\ORM\PersistentCollection {#3984 …} -id: 8469 -bodyTs: "'1.2':28,35 '2.4':16,23 'across':25,54 'also':39 'assum':3 'compon':53 'constant':12 'dc':52 'destroy':59 'exact':22 'm':2 'meter':9 'practic':47 'precis':34 'sensor':56 'sourc':14 'suppli':30 'temperatur':44 'time':42 'v':6,17,24,29,36 'vari':40 'voltag':13 'zener':18" +ranking: 0 +commentCount: 0 +upVotes: 0 +downVotes: 0 +visibility: "visible " +apId: "https://discuss.tchncs.de/comment/661762" +editedAt: null +createdAt: DateTimeImmutable @1688586156 {#3965 : 2023-07-05 21:42:36.0 +02:00 } } +root: App\Entity\EntryComment {#4020} +body: "Thank you. Do you recommend me something (circuit) else? The 2.4v zener would provide about 2.4v. To keep 1.2V exactly half of the zener produced by the zener, I was considering split its voltage with 2 x 10k resistor in series and feed into an opamp in buffer configuration, so even it the 2.4 reference changes a little bit, the other side of circuit would be always zener / 2." +lang: "en" +isAdult: false +favouriteCount: 0 +score: 0 +lastActive: DateTime @1688587916 {#4043 : 2023-07-05 22:11:56.0 +02:00 } +ip: null +tags: null +mentions: [ "@macusking@discuss.tchncs.de" "@Susan_B_Good@discuss.tchncs.de" ] +children: Doctrine\ORM\PersistentCollection {#4051 …} +nested: Doctrine\ORM\PersistentCollection {#4053 …} +votes: Doctrine\ORM\PersistentCollection {#4055 …} +reports: Doctrine\ORM\PersistentCollection {#4036 …} +favourites: Doctrine\ORM\PersistentCollection {#4034 …} +notifications: Doctrine\ORM\PersistentCollection {#4032 …} -id: 8472 -bodyTs: "'1.2':21 '10k':41 '2':39,72 '2.4':11,17,57 'alway':70 'bit':62 'buffer':51 'chang':59 'circuit':8,67 'configur':52 'consid':34 'els':9 'even':54 'exact':23 'feed':46 'half':24 'keep':20 'littl':61 'opamp':49 'produc':28 'provid':15 'recommend':5 'refer':58 'resistor':42 'seri':44 'side':65 'someth':7 'split':35 'thank':1 'v':12,18,22 'voltag':37 'would':14,68 'x':40 'zener':13,27,31,71" +ranking: 0 +commentCount: 0 +upVotes: 0 +downVotes: 0 +visibility: "visible " +apId: "https://discuss.tchncs.de/comment/662713" +editedAt: DateTimeImmutable @1688588351 {#4040 : 2023-07-05 22:19:11.0 +02:00 } +createdAt: DateTimeImmutable @1688587916 {#4038 : 2023-07-05 22:11:56.0 +02:00 } } "showNested" => true "level" => 2 "showEntryTitle" => false "showMagazineName" => false ] |
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Doctrine\ORM\PersistentCollection {#4073 …} +notifications: Doctrine\ORM\PersistentCollection {#4076 …} +awards: Doctrine\ORM\PersistentCollection {#4074 …} +subscribedCategories: Doctrine\ORM\PersistentCollection {#4072 …} +categories: Doctrine\ORM\PersistentCollection {#4071 …} -id: 5835 -password: "$2y$13$/0ECxSzDnJN92aSFqdmLL.rBetZbWXolSrH9fzhaWu4zwzjKeCSFi" -totpSecret: null -totpBackupCodes: [] -oAuth2UserConsents: Doctrine\ORM\PersistentCollection {#4064 …} +apId: "Susan_B_Good@discuss.tchncs.de" +apProfileId: "https://discuss.tchncs.de/u/Susan_B_Good" +apPublicUrl: "https://discuss.tchncs.de/u/Susan_B_Good" +apFollowersUrl: null +apInboxUrl: "https://discuss.tchncs.de/inbox" +apDomain: "discuss.tchncs.de" +apPreferredUsername: "Susan_B_Good" +apDiscoverable: true +apManuallyApprovesFollowers: false +privateKey: null +publicKey: null +apFetchedAt: DateTime @1689070487 {#4024 : 2023-07-11 12:14:47.0 +02:00 } +apDeletedAt: null +apTimeoutAt: null +visibility: "visible " +createdAt: DateTimeImmutable @1687249795 {#4022 : 2023-06-20 10:29:55.0 +02:00 } } +entry: App\Entity\Entry {#2412} +magazine: App\Entity\Magazine {#264} +image: null +parent: null +root: null +body: "I’m assuming that those "v"s are meters and not constant voltage sources. A 2.4v zener does NOT have exactly 2.4v across it. A 1.2 v supply will not be precisely 1.2v. Both will also vary with time and temperature. So, in practice there WILL be a dc component across the sensor - which will destroy it." +lang: "en" +isAdult: false +favouriteCount: 0 +score: 0 +lastActive: DateTime @1688761531 {#4029 : 2023-07-07 22:25:31.0 +02:00 } +ip: null +tags: null +mentions: [ "@macusking@discuss.tchncs.de" ] +children: Doctrine\ORM\PersistentCollection {#4018 …} +nested: Doctrine\ORM\PersistentCollection {#4016 …} +votes: Doctrine\ORM\PersistentCollection {#4014 …} +reports: Doctrine\ORM\PersistentCollection {#4012 …} +favourites: Doctrine\ORM\PersistentCollection {#3980 …} +notifications: Doctrine\ORM\PersistentCollection {#3984 …} -id: 8469 -bodyTs: "'1.2':28,35 '2.4':16,23 'across':25,54 'also':39 'assum':3 'compon':53 'constant':12 'dc':52 'destroy':59 'exact':22 'm':2 'meter':9 'practic':47 'precis':34 'sensor':56 'sourc':14 'suppli':30 'temperatur':44 'time':42 'v':6,17,24,29,36 'vari':40 'voltag':13 'zener':18" +ranking: 0 +commentCount: 0 +upVotes: 0 +downVotes: 0 +visibility: "visible " +apId: "https://discuss.tchncs.de/comment/661762" +editedAt: null +createdAt: DateTimeImmutable @1688586156 {#3965 : 2023-07-05 21:42:36.0 +02:00 } } +root: App\Entity\EntryComment {#4020} +body: "Thank you. Do you recommend me something (circuit) else? The 2.4v zener would provide about 2.4v. To keep 1.2V exactly half of the zener produced by the zener, I was considering split its voltage with 2 x 10k resistor in series and feed into an opamp in buffer configuration, so even it the 2.4 reference changes a little bit, the other side of circuit would be always zener / 2." +lang: "en" +isAdult: false +favouriteCount: 0 +score: 0 +lastActive: DateTime @1688587916 {#4043 : 2023-07-05 22:11:56.0 +02:00 } +ip: null +tags: null +mentions: [ "@macusking@discuss.tchncs.de" "@Susan_B_Good@discuss.tchncs.de" ] +children: Doctrine\ORM\PersistentCollection {#4051 …} +nested: Doctrine\ORM\PersistentCollection {#4053 …} +votes: Doctrine\ORM\PersistentCollection {#4055 …} +reports: Doctrine\ORM\PersistentCollection {#4036 …} +favourites: Doctrine\ORM\PersistentCollection {#4034 …} +notifications: Doctrine\ORM\PersistentCollection {#4032 …} -id: 8472 -bodyTs: "'1.2':21 '10k':41 '2':39,72 '2.4':11,17,57 'alway':70 'bit':62 'buffer':51 'chang':59 'circuit':8,67 'configur':52 'consid':34 'els':9 'even':54 'exact':23 'feed':46 'half':24 'keep':20 'littl':61 'opamp':49 'produc':28 'provid':15 'recommend':5 'refer':58 'resistor':42 'seri':44 'side':65 'someth':7 'split':35 'thank':1 'v':12,18,22 'voltag':37 'would':14,68 'x':40 'zener':13,27,31,71" +ranking: 0 +commentCount: 0 +upVotes: 0 +downVotes: 0 +visibility: "visible " +apId: "https://discuss.tchncs.de/comment/662713" +editedAt: DateTimeImmutable @1688588351 {#4040 : 2023-07-05 22:19:11.0 +02:00 } +createdAt: DateTimeImmutable @1688587916 {#4038 : 2023-07-05 22:11:56.0 +02:00 } } +showMagazineName: false +showEntryTitle: false +showNested: true +level: 2 +canSeeTrash: false +dateAsUrl: false -requestStack: Symfony\Component\HttpFoundation\RequestStack {#1328 …} -authorizationChecker: Symfony\Component\Security\Core\Authorization\AuthorizationChecker {#931 …} } |
user_inline | App\Twig\Components\UserInlineComponent | 12.0 MiB | 0.14 ms | |
---|---|---|---|---|
Input props | [ "user" => Proxies\__CG__\App\Entity\User {#1978 +avatar: null +cover: null +email: "macusking@discuss.tchncs.de" +username: "@macusking@discuss.tchncs.de" +roles: [] +followersCount: 0 +homepage: "front" +about: null +lastActive: DateTime @1688762258 {#1515 : 2023-07-07 22:37:38.0 +02:00 } +markedForDeletionAt: null +fields: null +oauthGithubId: null +oauthGoogleId: null +oauthFacebookId: null +oauthKeycloakId: null +hideAdult: true +showSubscribedUsers: true +showSubscribedMagazines: true +showSubscribedDomains: true +preferredLanguages: [] +featuredMagazines: null +showProfileSubscriptions: true +showProfileFollowings: true +markNewComments: false +notifyOnNewEntry: false +notifyOnNewEntryReply: false +notifyOnNewEntryCommentReply: false +notifyOnNewPost: false +notifyOnNewPostReply: false +notifyOnNewPostCommentReply: false +addMentionsEntries: false +addMentionsPosts: true +isBanned: false +isVerified: false +isDeleted: false +isBot: false +spamProtection: true +customCss: null +ignoreMagazinesCustomCss: false +moderatorTokens: Doctrine\ORM\PersistentCollection {#1519 …} +magazineOwnershipRequests: Doctrine\ORM\PersistentCollection {#1517 …} +moderatorRequests: Doctrine\ORM\PersistentCollection {#1623 …} +entries: Doctrine\ORM\PersistentCollection {#1406 …} +entryVotes: Doctrine\ORM\PersistentCollection {#1713 …} +entryComments: Doctrine\ORM\PersistentCollection {#1710 …} +entryCommentVotes: Doctrine\ORM\PersistentCollection {#1474 …} +posts: Doctrine\ORM\PersistentCollection {#1745 …} +postVotes: Doctrine\ORM\PersistentCollection {#1485 …} +postComments: Doctrine\ORM\PersistentCollection {#1759 …} +postCommentVotes: Doctrine\ORM\PersistentCollection {#1637 …} +subscriptions: Doctrine\ORM\PersistentCollection {#1475 …} +subscribedDomains: Doctrine\ORM\PersistentCollection {#1636 …} +follows: Doctrine\ORM\PersistentCollection {#1409 …} +followers: Doctrine\ORM\PersistentCollection {#1624 …} +blocks: Doctrine\ORM\PersistentCollection {#1425 …} +blockers: Doctrine\ORM\PersistentCollection {#1441 …} +blockedMagazines: Doctrine\ORM\PersistentCollection {#1460 …} +blockedDomains: Doctrine\ORM\PersistentCollection {#1439 …} +reports: Doctrine\ORM\PersistentCollection {#1416 …} +favourites: Doctrine\ORM\PersistentCollection {#1430 …} +violations: Doctrine\ORM\PersistentCollection {#1694 …} +notifications: Doctrine\ORM\PersistentCollection {#1700 …} +awards: Doctrine\ORM\PersistentCollection {#1434 …} +subscribedCategories: Doctrine\ORM\PersistentCollection {#1610 …} +categories: Doctrine\ORM\PersistentCollection {#1640 …} -id: 19399 -password: "$2y$13$GtA6yJr0SHJf/70Uom7/xuVlLxced/g77qbWw1CPRQVbQEuUFzyGS" -totpSecret: null -totpBackupCodes: [] -oAuth2UserConsents: Doctrine\ORM\PersistentCollection {#1669 …} +apId: "macusking@discuss.tchncs.de" +apProfileId: "https://discuss.tchncs.de/u/macusking" +apPublicUrl: "https://discuss.tchncs.de/u/macusking" +apFollowersUrl: null +apInboxUrl: "https://discuss.tchncs.de/inbox" +apDomain: "discuss.tchncs.de" +apPreferredUsername: "macusking" +apDiscoverable: true +apManuallyApprovesFollowers: false +privateKey: null +publicKey: null +apFetchedAt: DateTime @1688761497 {#1516 : 2023-07-07 22:24:57.0 +02:00 } +apDeletedAt: null +apTimeoutAt: null +visibility: "visible " +createdAt: DateTimeImmutable @1688582502 {#1518 : 2023-07-05 20:41:42.0 +02:00 } +__isInitialized__: true …2 } "showAvatar" => false ] |
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Attributes | [] |
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Component | App\Twig\Components\UserInlineComponent {#4864 +user: Proxies\__CG__\App\Entity\User {#1978 +avatar: null +cover: null +email: "macusking@discuss.tchncs.de" +username: "@macusking@discuss.tchncs.de" +roles: [] +followersCount: 0 +homepage: "front" +about: null +lastActive: DateTime @1688762258 {#1515 : 2023-07-07 22:37:38.0 +02:00 } +markedForDeletionAt: null +fields: null +oauthGithubId: null +oauthGoogleId: null +oauthFacebookId: null +oauthKeycloakId: null +hideAdult: true +showSubscribedUsers: true +showSubscribedMagazines: true +showSubscribedDomains: true +preferredLanguages: [] +featuredMagazines: null +showProfileSubscriptions: true +showProfileFollowings: true +markNewComments: false +notifyOnNewEntry: false +notifyOnNewEntryReply: false +notifyOnNewEntryCommentReply: false +notifyOnNewPost: false +notifyOnNewPostReply: false +notifyOnNewPostCommentReply: false +addMentionsEntries: false +addMentionsPosts: true +isBanned: false +isVerified: false +isDeleted: false +isBot: false +spamProtection: true +customCss: null +ignoreMagazinesCustomCss: false +moderatorTokens: Doctrine\ORM\PersistentCollection {#1519 …} +magazineOwnershipRequests: Doctrine\ORM\PersistentCollection {#1517 …} +moderatorRequests: Doctrine\ORM\PersistentCollection {#1623 …} +entries: Doctrine\ORM\PersistentCollection {#1406 …} +entryVotes: Doctrine\ORM\PersistentCollection {#1713 …} +entryComments: Doctrine\ORM\PersistentCollection {#1710 …} +entryCommentVotes: Doctrine\ORM\PersistentCollection {#1474 …} +posts: Doctrine\ORM\PersistentCollection {#1745 …} +postVotes: Doctrine\ORM\PersistentCollection {#1485 …} +postComments: Doctrine\ORM\PersistentCollection {#1759 …} +postCommentVotes: Doctrine\ORM\PersistentCollection {#1637 …} +subscriptions: Doctrine\ORM\PersistentCollection {#1475 …} +subscribedDomains: Doctrine\ORM\PersistentCollection {#1636 …} +follows: Doctrine\ORM\PersistentCollection {#1409 …} +followers: Doctrine\ORM\PersistentCollection {#1624 …} +blocks: Doctrine\ORM\PersistentCollection {#1425 …} +blockers: Doctrine\ORM\PersistentCollection {#1441 …} +blockedMagazines: Doctrine\ORM\PersistentCollection {#1460 …} +blockedDomains: Doctrine\ORM\PersistentCollection {#1439 …} +reports: Doctrine\ORM\PersistentCollection {#1416 …} +favourites: Doctrine\ORM\PersistentCollection {#1430 …} +violations: Doctrine\ORM\PersistentCollection {#1694 …} +notifications: Doctrine\ORM\PersistentCollection {#1700 …} +awards: Doctrine\ORM\PersistentCollection {#1434 …} +subscribedCategories: Doctrine\ORM\PersistentCollection {#1610 …} +categories: Doctrine\ORM\PersistentCollection {#1640 …} -id: 19399 -password: "$2y$13$GtA6yJr0SHJf/70Uom7/xuVlLxced/g77qbWw1CPRQVbQEuUFzyGS" -totpSecret: null -totpBackupCodes: [] -oAuth2UserConsents: Doctrine\ORM\PersistentCollection {#1669 …} +apId: "macusking@discuss.tchncs.de" +apProfileId: "https://discuss.tchncs.de/u/macusking" +apPublicUrl: "https://discuss.tchncs.de/u/macusking" +apFollowersUrl: null +apInboxUrl: "https://discuss.tchncs.de/inbox" +apDomain: "discuss.tchncs.de" +apPreferredUsername: "macusking" +apDiscoverable: true +apManuallyApprovesFollowers: false +privateKey: null +publicKey: null +apFetchedAt: DateTime @1688761497 {#1516 : 2023-07-07 22:24:57.0 +02:00 } +apDeletedAt: null +apTimeoutAt: null +visibility: "visible " +createdAt: DateTimeImmutable @1688582502 {#1518 : 2023-07-05 20:41:42.0 +02:00 } +__isInitialized__: true …2 } +showAvatar: false } |
date | App\Twig\Components\DateComponent | 12.0 MiB | 0.16 ms | |
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Input props | [ "date" => DateTimeImmutable @1688587916 {#4038 : 2023-07-05 22:11:56.0 +02:00 } ] |
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Attributes | [] |
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Component | App\Twig\Components\DateComponent {#4919 +date: DateTimeImmutable @1688587916 {#4038 : 2023-07-05 22:11:56.0 +02:00 } } |
date_edited | App\Twig\Components\DateEditedComponent | 12.0 MiB | 0.14 ms | |
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Input props | [ "createdAt" => DateTimeImmutable @1688587916 {#4038 : 2023-07-05 22:11:56.0 +02:00 } "editedAt" => DateTimeImmutable @1688588351 {#4040 : 2023-07-05 22:19:11.0 +02:00 } ] |
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Attributes | [] |
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Component | App\Twig\Components\DateEditedComponent {#4973 +createdAt: DateTimeImmutable @1688587916 {#4038 : 2023-07-05 22:11:56.0 +02:00 } +editedAt: DateTimeImmutable @1688588351 {#4040 : 2023-07-05 22:19:11.0 +02:00 } } |
user_avatar | App\Twig\Components\UserAvatarComponent | 12.0 MiB | 0.14 ms | |
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Input props | [ "user" => Proxies\__CG__\App\Entity\User {#1978 +avatar: null +cover: null +email: "macusking@discuss.tchncs.de" +username: "@macusking@discuss.tchncs.de" +roles: [] +followersCount: 0 +homepage: "front" +about: null +lastActive: DateTime @1688762258 {#1515 : 2023-07-07 22:37:38.0 +02:00 } +markedForDeletionAt: null +fields: null +oauthGithubId: null +oauthGoogleId: null +oauthFacebookId: null +oauthKeycloakId: null +hideAdult: true +showSubscribedUsers: true +showSubscribedMagazines: true +showSubscribedDomains: true +preferredLanguages: [] +featuredMagazines: null +showProfileSubscriptions: true +showProfileFollowings: true +markNewComments: false +notifyOnNewEntry: false +notifyOnNewEntryReply: false +notifyOnNewEntryCommentReply: false +notifyOnNewPost: false +notifyOnNewPostReply: false +notifyOnNewPostCommentReply: false +addMentionsEntries: false +addMentionsPosts: true +isBanned: false +isVerified: false +isDeleted: false +isBot: false +spamProtection: true +customCss: null +ignoreMagazinesCustomCss: false +moderatorTokens: Doctrine\ORM\PersistentCollection {#1519 …} +magazineOwnershipRequests: Doctrine\ORM\PersistentCollection {#1517 …} +moderatorRequests: Doctrine\ORM\PersistentCollection {#1623 …} +entries: Doctrine\ORM\PersistentCollection {#1406 …} +entryVotes: Doctrine\ORM\PersistentCollection {#1713 …} +entryComments: Doctrine\ORM\PersistentCollection {#1710 …} +entryCommentVotes: Doctrine\ORM\PersistentCollection {#1474 …} +posts: Doctrine\ORM\PersistentCollection {#1745 …} +postVotes: Doctrine\ORM\PersistentCollection {#1485 …} +postComments: Doctrine\ORM\PersistentCollection {#1759 …} +postCommentVotes: Doctrine\ORM\PersistentCollection {#1637 …} +subscriptions: Doctrine\ORM\PersistentCollection {#1475 …} +subscribedDomains: Doctrine\ORM\PersistentCollection {#1636 …} +follows: Doctrine\ORM\PersistentCollection {#1409 …} +followers: Doctrine\ORM\PersistentCollection {#1624 …} +blocks: Doctrine\ORM\PersistentCollection {#1425 …} +blockers: Doctrine\ORM\PersistentCollection {#1441 …} +blockedMagazines: Doctrine\ORM\PersistentCollection {#1460 …} +blockedDomains: Doctrine\ORM\PersistentCollection {#1439 …} +reports: Doctrine\ORM\PersistentCollection {#1416 …} +favourites: Doctrine\ORM\PersistentCollection {#1430 …} +violations: Doctrine\ORM\PersistentCollection {#1694 …} +notifications: Doctrine\ORM\PersistentCollection {#1700 …} +awards: Doctrine\ORM\PersistentCollection {#1434 …} +subscribedCategories: Doctrine\ORM\PersistentCollection {#1610 …} +categories: Doctrine\ORM\PersistentCollection {#1640 …} -id: 19399 -password: "$2y$13$GtA6yJr0SHJf/70Uom7/xuVlLxced/g77qbWw1CPRQVbQEuUFzyGS" -totpSecret: null -totpBackupCodes: [] -oAuth2UserConsents: Doctrine\ORM\PersistentCollection {#1669 …} +apId: "macusking@discuss.tchncs.de" +apProfileId: "https://discuss.tchncs.de/u/macusking" +apPublicUrl: "https://discuss.tchncs.de/u/macusking" +apFollowersUrl: null +apInboxUrl: "https://discuss.tchncs.de/inbox" +apDomain: "discuss.tchncs.de" +apPreferredUsername: "macusking" +apDiscoverable: true +apManuallyApprovesFollowers: false +privateKey: null +publicKey: null +apFetchedAt: DateTime @1688761497 {#1516 : 2023-07-07 22:24:57.0 +02:00 } +apDeletedAt: null +apTimeoutAt: null +visibility: "visible " +createdAt: DateTimeImmutable @1688582502 {#1518 : 2023-07-05 20:41:42.0 +02:00 } +__isInitialized__: true …2 } "width" => 40 "height" => 40 "asLink" => true ] |
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Attributes | [] |
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Component | App\Twig\Components\UserAvatarComponent {#5027 +width: 40 +height: 40 +user: Proxies\__CG__\App\Entity\User {#1978 +avatar: null +cover: null +email: "macusking@discuss.tchncs.de" +username: "@macusking@discuss.tchncs.de" +roles: [] +followersCount: 0 +homepage: "front" +about: null +lastActive: DateTime @1688762258 {#1515 : 2023-07-07 22:37:38.0 +02:00 } +markedForDeletionAt: null +fields: null +oauthGithubId: null +oauthGoogleId: null +oauthFacebookId: null +oauthKeycloakId: null +hideAdult: true +showSubscribedUsers: true +showSubscribedMagazines: true +showSubscribedDomains: true +preferredLanguages: [] +featuredMagazines: null +showProfileSubscriptions: true +showProfileFollowings: true +markNewComments: false +notifyOnNewEntry: false +notifyOnNewEntryReply: false +notifyOnNewEntryCommentReply: false +notifyOnNewPost: false +notifyOnNewPostReply: false +notifyOnNewPostCommentReply: false +addMentionsEntries: false +addMentionsPosts: true +isBanned: false +isVerified: false +isDeleted: false +isBot: false +spamProtection: true +customCss: null +ignoreMagazinesCustomCss: false +moderatorTokens: Doctrine\ORM\PersistentCollection {#1519 …} +magazineOwnershipRequests: Doctrine\ORM\PersistentCollection {#1517 …} +moderatorRequests: Doctrine\ORM\PersistentCollection {#1623 …} +entries: Doctrine\ORM\PersistentCollection {#1406 …} +entryVotes: Doctrine\ORM\PersistentCollection {#1713 …} +entryComments: Doctrine\ORM\PersistentCollection {#1710 …} +entryCommentVotes: Doctrine\ORM\PersistentCollection {#1474 …} +posts: Doctrine\ORM\PersistentCollection {#1745 …} +postVotes: Doctrine\ORM\PersistentCollection {#1485 …} +postComments: Doctrine\ORM\PersistentCollection {#1759 …} +postCommentVotes: Doctrine\ORM\PersistentCollection {#1637 …} +subscriptions: Doctrine\ORM\PersistentCollection {#1475 …} +subscribedDomains: Doctrine\ORM\PersistentCollection {#1636 …} +follows: Doctrine\ORM\PersistentCollection {#1409 …} +followers: Doctrine\ORM\PersistentCollection {#1624 …} +blocks: Doctrine\ORM\PersistentCollection {#1425 …} +blockers: Doctrine\ORM\PersistentCollection {#1441 …} +blockedMagazines: Doctrine\ORM\PersistentCollection {#1460 …} +blockedDomains: Doctrine\ORM\PersistentCollection {#1439 …} +reports: Doctrine\ORM\PersistentCollection {#1416 …} +favourites: Doctrine\ORM\PersistentCollection {#1430 …} +violations: Doctrine\ORM\PersistentCollection {#1694 …} +notifications: Doctrine\ORM\PersistentCollection {#1700 …} +awards: Doctrine\ORM\PersistentCollection {#1434 …} +subscribedCategories: Doctrine\ORM\PersistentCollection {#1610 …} +categories: Doctrine\ORM\PersistentCollection {#1640 …} -id: 19399 -password: "$2y$13$GtA6yJr0SHJf/70Uom7/xuVlLxced/g77qbWw1CPRQVbQEuUFzyGS" -totpSecret: null -totpBackupCodes: [] -oAuth2UserConsents: Doctrine\ORM\PersistentCollection {#1669 …} +apId: "macusking@discuss.tchncs.de" +apProfileId: "https://discuss.tchncs.de/u/macusking" +apPublicUrl: "https://discuss.tchncs.de/u/macusking" +apFollowersUrl: null +apInboxUrl: "https://discuss.tchncs.de/inbox" +apDomain: "discuss.tchncs.de" +apPreferredUsername: "macusking" +apDiscoverable: true +apManuallyApprovesFollowers: false +privateKey: null +publicKey: null +apFetchedAt: DateTime @1688761497 {#1516 : 2023-07-07 22:24:57.0 +02:00 } +apDeletedAt: null +apTimeoutAt: null +visibility: "visible " +createdAt: DateTimeImmutable @1688582502 {#1518 : 2023-07-05 20:41:42.0 +02:00 } +__isInitialized__: true …2 } +asLink: true } |
vote | App\Twig\Components\VoteComponent | 12.0 MiB | 0.50 ms | |
---|---|---|---|---|
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Yes, I picked a HR202 to challenge myself to make it work. I already have some easier-to-use SHT40 in stock.\n \n This sensor can only run with AC 1.5Vpeak max. So, I’ve created this little circuit to provide AC, and I’ll only read it when the oscillator output is HIGH, so I can read it briefly at the same time with the help of Arduino’s ADC. Could this circuit work? Thank you. """ +type: "article" +lang: "en" +isOc: false +hasEmbed: false +commentCount: 4 +favouriteCount: 1 +score: 0 +isAdult: false +sticky: false +lastActive: DateTime @1688761530 {#2418 : 2023-07-07 22:25:30.0 +02:00 } +ip: null +adaAmount: 0 +tags: null +mentions: null +comments: Doctrine\ORM\PersistentCollection {#1688 …} +votes: Doctrine\ORM\PersistentCollection {#1966 …} +reports: Doctrine\ORM\PersistentCollection {#1965 …} +favourites: Doctrine\ORM\PersistentCollection {#1368 …} +notifications: Doctrine\ORM\PersistentCollection {#2426 …} +badges: Doctrine\ORM\PersistentCollection {#2439 …} +children: [] -id: 875 -titleTs: "'actual':10 'circuit':3 'hr202':7 'humid':8 'sensor':9 'use':5 'work':11 'would':1" -bodyTs: "'/pictrs/image/e2575314-be01-4a3f-bab2-cc75811b3ce8.png)':3 '1.5':44 'ac':43,56 'adc':85 'alreadi':27 'arduino':13,83 'briefli':74 'challeng':20 'circuit':53,88 'could':86 'creat':50 'discuss.tchncs.de':2 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+createdAt: DateTimeImmutable @1687249795 {#4022 : 2023-06-20 10:29:55.0 +02:00 } } +entry: App\Entity\Entry {#2412} +magazine: App\Entity\Magazine {#264} +image: null +parent: null +root: null +body: "I’m assuming that those "v"s are meters and not constant voltage sources. A 2.4v zener does NOT have exactly 2.4v across it. A 1.2 v supply will not be precisely 1.2v. Both will also vary with time and temperature. So, in practice there WILL be a dc component across the sensor - which will destroy it." +lang: "en" +isAdult: false +favouriteCount: 0 +score: 0 +lastActive: DateTime @1688761531 {#4029 : 2023-07-07 22:25:31.0 +02:00 } +ip: null +tags: null +mentions: [ "@macusking@discuss.tchncs.de" ] +children: Doctrine\ORM\PersistentCollection {#4018 …} +nested: Doctrine\ORM\PersistentCollection {#4016 …} +votes: Doctrine\ORM\PersistentCollection {#4014 …} +reports: Doctrine\ORM\PersistentCollection {#4012 …} +favourites: Doctrine\ORM\PersistentCollection {#3980 …} +notifications: Doctrine\ORM\PersistentCollection {#3984 …} -id: 8469 -bodyTs: "'1.2':28,35 '2.4':16,23 'across':25,54 'also':39 'assum':3 'compon':53 'constant':12 'dc':52 'destroy':59 'exact':22 'm':2 'meter':9 'practic':47 'precis':34 'sensor':56 'sourc':14 'suppli':30 'temperatur':44 'time':42 'v':6,17,24,29,36 'vari':40 'voltag':13 'zener':18" +ranking: 0 +commentCount: 0 +upVotes: 0 +downVotes: 0 +visibility: "visible " +apId: "https://discuss.tchncs.de/comment/661762" +editedAt: null +createdAt: DateTimeImmutable @1688586156 {#3965 : 2023-07-05 21:42:36.0 +02:00 } } +root: App\Entity\EntryComment {#4020} +body: "Thank you. Do you recommend me something (circuit) else? The 2.4v zener would provide about 2.4v. To keep 1.2V exactly half of the zener produced by the zener, I was considering split its voltage with 2 x 10k resistor in series and feed into an opamp in buffer configuration, so even it the 2.4 reference changes a little bit, the other side of circuit would be always zener / 2." +lang: "en" +isAdult: false +favouriteCount: 0 +score: 0 +lastActive: DateTime @1688587916 {#4043 : 2023-07-05 22:11:56.0 +02:00 } +ip: null +tags: null +mentions: [ "@macusking@discuss.tchncs.de" "@Susan_B_Good@discuss.tchncs.de" ] +children: Doctrine\ORM\PersistentCollection {#4051 …} +nested: Doctrine\ORM\PersistentCollection {#4053 …} +votes: Doctrine\ORM\PersistentCollection {#4055 …} +reports: Doctrine\ORM\PersistentCollection {#4036 …} +favourites: Doctrine\ORM\PersistentCollection {#4034 …} +notifications: Doctrine\ORM\PersistentCollection {#4032 …} -id: 8472 -bodyTs: "'1.2':21 '10k':41 '2':39,72 '2.4':11,17,57 'alway':70 'bit':62 'buffer':51 'chang':59 'circuit':8,67 'configur':52 'consid':34 'els':9 'even':54 'exact':23 'feed':46 'half':24 'keep':20 'littl':61 'opamp':49 'produc':28 'provid':15 'recommend':5 'refer':58 'resistor':42 'seri':44 'side':65 'someth':7 'split':35 'thank':1 'v':12,18,22 'voltag':37 'would':14,68 'x':40 'zener':13,27,31,71" +ranking: 0 +commentCount: 0 +upVotes: 0 +downVotes: 0 +visibility: "visible " +apId: "https://discuss.tchncs.de/comment/662713" +editedAt: DateTimeImmutable @1688588351 {#4040 : 2023-07-05 22:19:11.0 +02:00 } +createdAt: DateTimeImmutable @1688587916 {#4038 : 2023-07-05 22:11:56.0 +02:00 } } ] |
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A 2.4v zener does NOT have exactly 2.4v across it. A 1.2 v supply will not be precisely 1.2v. Both will also vary with time and temperature. So, in practice there WILL be a dc component across the sensor - which will destroy it." +lang: "en" +isAdult: false +favouriteCount: 0 +score: 0 +lastActive: DateTime @1688761531 {#4029 : 2023-07-07 22:25:31.0 +02:00 } +ip: null +tags: null +mentions: [ "@macusking@discuss.tchncs.de" ] +children: Doctrine\ORM\PersistentCollection {#4018 …} +nested: Doctrine\ORM\PersistentCollection {#4016 …} +votes: Doctrine\ORM\PersistentCollection {#4014 …} +reports: Doctrine\ORM\PersistentCollection {#4012 …} +favourites: Doctrine\ORM\PersistentCollection {#3980 …} +notifications: Doctrine\ORM\PersistentCollection {#3984 …} -id: 8469 -bodyTs: "'1.2':28,35 '2.4':16,23 'across':25,54 'also':39 'assum':3 'compon':53 'constant':12 'dc':52 'destroy':59 'exact':22 'm':2 'meter':9 'practic':47 'precis':34 'sensor':56 'sourc':14 'suppli':30 'temperatur':44 'time':42 'v':6,17,24,29,36 'vari':40 'voltag':13 'zener':18" +ranking: 0 +commentCount: 0 +upVotes: 0 +downVotes: 0 +visibility: "visible " +apId: "https://discuss.tchncs.de/comment/661762" +editedAt: null +createdAt: DateTimeImmutable @1688586156 {#3965 : 2023-07-05 21:42:36.0 +02:00 } } +root: App\Entity\EntryComment {#4020} +body: "Thank you. Do you recommend me something (circuit) else? The 2.4v zener would provide about 2.4v. To keep 1.2V exactly half of the zener produced by the zener, I was considering split its voltage with 2 x 10k resistor in series and feed into an opamp in buffer configuration, so even it the 2.4 reference changes a little bit, the other side of circuit would be always zener / 2." +lang: "en" +isAdult: false +favouriteCount: 0 +score: 0 +lastActive: DateTime @1688587916 {#4043 : 2023-07-05 22:11:56.0 +02:00 } +ip: null +tags: null +mentions: [ "@macusking@discuss.tchncs.de" "@Susan_B_Good@discuss.tchncs.de" ] +children: Doctrine\ORM\PersistentCollection {#4051 …} +nested: Doctrine\ORM\PersistentCollection {#4053 …} +votes: Doctrine\ORM\PersistentCollection {#4055 …} +reports: Doctrine\ORM\PersistentCollection {#4036 …} +favourites: Doctrine\ORM\PersistentCollection {#4034 …} +notifications: Doctrine\ORM\PersistentCollection {#4032 …} -id: 8472 -bodyTs: "'1.2':21 '10k':41 '2':39,72 '2.4':11,17,57 'alway':70 'bit':62 'buffer':51 'chang':59 'circuit':8,67 'configur':52 'consid':34 'els':9 'even':54 'exact':23 'feed':46 'half':24 'keep':20 'littl':61 'opamp':49 'produc':28 'provid':15 'recommend':5 'refer':58 'resistor':42 'seri':44 'side':65 'someth':7 'split':35 'thank':1 'v':12,18,22 'voltag':37 'would':14,68 'x':40 'zener':13,27,31,71" +ranking: 0 +commentCount: 0 +upVotes: 0 +downVotes: 0 +visibility: "visible " +apId: "https://discuss.tchncs.de/comment/662713" +editedAt: DateTimeImmutable @1688588351 {#4040 : 2023-07-05 22:19:11.0 +02:00 } +createdAt: DateTimeImmutable @1688587916 {#4038 : 2023-07-05 22:11:56.0 +02:00 } } +formDest: "entry_comment" +showDownvote: true -cache: Symfony\Component\Cache\Adapter\TraceableTagAwareAdapter {#600 …} } |
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Yes, I picked a HR202 to challenge myself to make it work. I already have some easier-to-use SHT40 in stock.\n \n This sensor can only run with AC 1.5Vpeak max. So, I’ve created this little circuit to provide AC, and I’ll only read it when the oscillator output is HIGH, so I can read it briefly at the same time with the help of Arduino’s ADC. Could this circuit work? Thank you. """ +type: "article" +lang: "en" +isOc: false +hasEmbed: false +commentCount: 4 +favouriteCount: 1 +score: 0 +isAdult: false +sticky: false +lastActive: DateTime @1688761530 {#2418 : 2023-07-07 22:25:30.0 +02:00 } +ip: null +adaAmount: 0 +tags: null +mentions: null +comments: Doctrine\ORM\PersistentCollection {#1688 …} +votes: Doctrine\ORM\PersistentCollection {#1966 …} +reports: Doctrine\ORM\PersistentCollection {#1965 …} +favourites: Doctrine\ORM\PersistentCollection {#1368 …} +notifications: Doctrine\ORM\PersistentCollection {#2426 …} +badges: Doctrine\ORM\PersistentCollection {#2439 …} +children: [] -id: 875 -titleTs: "'actual':10 'circuit':3 'hr202':7 'humid':8 'sensor':9 'use':5 'work':11 'would':1" -bodyTs: "'/pictrs/image/e2575314-be01-4a3f-bab2-cc75811b3ce8.png)':3 '1.5':44 'ac':43,56 'adc':85 'alreadi':27 'arduino':13,83 'briefli':74 'challeng':20 'circuit':53,88 'could':86 'creat':50 'discuss.tchncs.de':2 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A 2.4v zener does NOT have exactly 2.4v across it. A 1.2 v supply will not be precisely 1.2v. Both will also vary with time and temperature. So, in practice there WILL be a dc component across the sensor - which will destroy it." +lang: "en" +isAdult: false +favouriteCount: 0 +score: 0 +lastActive: DateTime @1688761531 {#4029 : 2023-07-07 22:25:31.0 +02:00 } +ip: null +tags: null +mentions: [ "@macusking@discuss.tchncs.de" ] +children: Doctrine\ORM\PersistentCollection {#4018 …} +nested: Doctrine\ORM\PersistentCollection {#4016 …} +votes: Doctrine\ORM\PersistentCollection {#4014 …} +reports: Doctrine\ORM\PersistentCollection {#4012 …} +favourites: Doctrine\ORM\PersistentCollection {#3980 …} +notifications: Doctrine\ORM\PersistentCollection {#3984 …} -id: 8469 -bodyTs: "'1.2':28,35 '2.4':16,23 'across':25,54 'also':39 'assum':3 'compon':53 'constant':12 'dc':52 'destroy':59 'exact':22 'm':2 'meter':9 'practic':47 'precis':34 'sensor':56 'sourc':14 'suppli':30 'temperatur':44 'time':42 'v':6,17,24,29,36 'vari':40 'voltag':13 'zener':18" +ranking: 0 +commentCount: 0 +upVotes: 0 +downVotes: 0 +visibility: "visible " +apId: "https://discuss.tchncs.de/comment/661762" +editedAt: null +createdAt: DateTimeImmutable @1688586156 {#3965 : 2023-07-05 21:42:36.0 +02:00 } } +root: App\Entity\EntryComment {#4020} +body: "Thank you. Do you recommend me something (circuit) else? The 2.4v zener would provide about 2.4v. To keep 1.2V exactly half of the zener produced by the zener, I was considering split its voltage with 2 x 10k resistor in series and feed into an opamp in buffer configuration, so even it the 2.4 reference changes a little bit, the other side of circuit would be always zener / 2." +lang: "en" +isAdult: false +favouriteCount: 0 +score: 0 +lastActive: DateTime @1688587916 {#4043 : 2023-07-05 22:11:56.0 +02:00 } +ip: null +tags: null +mentions: [ "@macusking@discuss.tchncs.de" "@Susan_B_Good@discuss.tchncs.de" ] +children: Doctrine\ORM\PersistentCollection {#4051 …} +nested: Doctrine\ORM\PersistentCollection {#4053 …} +votes: Doctrine\ORM\PersistentCollection {#4055 …} +reports: Doctrine\ORM\PersistentCollection {#4036 …} +favourites: Doctrine\ORM\PersistentCollection {#4034 …} +notifications: Doctrine\ORM\PersistentCollection {#4032 …} -id: 8472 -bodyTs: "'1.2':21 '10k':41 '2':39,72 '2.4':11,17,57 'alway':70 'bit':62 'buffer':51 'chang':59 'circuit':8,67 'configur':52 'consid':34 'els':9 'even':54 'exact':23 'feed':46 'half':24 'keep':20 'littl':61 'opamp':49 'produc':28 'provid':15 'recommend':5 'refer':58 'resistor':42 'seri':44 'side':65 'someth':7 'split':35 'thank':1 'v':12,18,22 'voltag':37 'would':14,68 'x':40 'zener':13,27,31,71" +ranking: 0 +commentCount: 0 +upVotes: 0 +downVotes: 0 +visibility: "visible " +apId: "https://discuss.tchncs.de/comment/662713" +editedAt: DateTimeImmutable @1688588351 {#4040 : 2023-07-05 22:19:11.0 +02:00 } +createdAt: DateTimeImmutable @1688587916 {#4038 : 2023-07-05 22:11:56.0 +02:00 } } ] |
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Yes, I picked a HR202 to challenge myself to make it work. I already have some easier-to-use SHT40 in stock.\n \n This sensor can only run with AC 1.5Vpeak max. So, I’ve created this little circuit to provide AC, and I’ll only read it when the oscillator output is HIGH, so I can read it briefly at the same time with the help of Arduino’s ADC. Could this circuit work? Thank you. """ +type: "article" +lang: "en" +isOc: false +hasEmbed: false +commentCount: 4 +favouriteCount: 1 +score: 0 +isAdult: false +sticky: false +lastActive: DateTime @1688761530 {#2418 : 2023-07-07 22:25:30.0 +02:00 } +ip: null +adaAmount: 0 +tags: null +mentions: null +comments: Doctrine\ORM\PersistentCollection {#1688 …} +votes: Doctrine\ORM\PersistentCollection {#1966 …} +reports: Doctrine\ORM\PersistentCollection {#1965 …} +favourites: Doctrine\ORM\PersistentCollection {#1368 …} +notifications: Doctrine\ORM\PersistentCollection {#2426 …} +badges: Doctrine\ORM\PersistentCollection {#2439 …} +children: [] -id: 875 -titleTs: "'actual':10 'circuit':3 'hr202':7 'humid':8 'sensor':9 'use':5 'work':11 'would':1" -bodyTs: "'/pictrs/image/e2575314-be01-4a3f-bab2-cc75811b3ce8.png)':3 '1.5':44 'ac':43,56 'adc':85 'alreadi':27 'arduino':13,83 'briefli':74 'challeng':20 'circuit':53,88 'could':86 'creat':50 'discuss.tchncs.de':2 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+createdAt: DateTimeImmutable @1687249795 {#4022 : 2023-06-20 10:29:55.0 +02:00 } } +entry: App\Entity\Entry {#2412} +magazine: App\Entity\Magazine {#264} +image: null +parent: null +root: null +body: "I’m assuming that those "v"s are meters and not constant voltage sources. A 2.4v zener does NOT have exactly 2.4v across it. A 1.2 v supply will not be precisely 1.2v. Both will also vary with time and temperature. So, in practice there WILL be a dc component across the sensor - which will destroy it." +lang: "en" +isAdult: false +favouriteCount: 0 +score: 0 +lastActive: DateTime @1688761531 {#4029 : 2023-07-07 22:25:31.0 +02:00 } +ip: null +tags: null +mentions: [ "@macusking@discuss.tchncs.de" ] +children: Doctrine\ORM\PersistentCollection {#4018 …} +nested: Doctrine\ORM\PersistentCollection {#4016 …} +votes: Doctrine\ORM\PersistentCollection {#4014 …} +reports: Doctrine\ORM\PersistentCollection {#4012 …} +favourites: Doctrine\ORM\PersistentCollection {#3980 …} +notifications: Doctrine\ORM\PersistentCollection {#3984 …} -id: 8469 -bodyTs: "'1.2':28,35 '2.4':16,23 'across':25,54 'also':39 'assum':3 'compon':53 'constant':12 'dc':52 'destroy':59 'exact':22 'm':2 'meter':9 'practic':47 'precis':34 'sensor':56 'sourc':14 'suppli':30 'temperatur':44 'time':42 'v':6,17,24,29,36 'vari':40 'voltag':13 'zener':18" +ranking: 0 +commentCount: 0 +upVotes: 0 +downVotes: 0 +visibility: "visible " +apId: "https://discuss.tchncs.de/comment/661762" +editedAt: null +createdAt: DateTimeImmutable @1688586156 {#3965 : 2023-07-05 21:42:36.0 +02:00 } } +root: App\Entity\EntryComment {#4020} +body: "Thank you. Do you recommend me something (circuit) else? The 2.4v zener would provide about 2.4v. To keep 1.2V exactly half of the zener produced by the zener, I was considering split its voltage with 2 x 10k resistor in series and feed into an opamp in buffer configuration, so even it the 2.4 reference changes a little bit, the other side of circuit would be always zener / 2." +lang: "en" +isAdult: false +favouriteCount: 0 +score: 0 +lastActive: DateTime @1688587916 {#4043 : 2023-07-05 22:11:56.0 +02:00 } +ip: null +tags: null +mentions: [ "@macusking@discuss.tchncs.de" "@Susan_B_Good@discuss.tchncs.de" ] +children: Doctrine\ORM\PersistentCollection {#4051 …} +nested: Doctrine\ORM\PersistentCollection {#4053 …} +votes: Doctrine\ORM\PersistentCollection {#4055 …} +reports: Doctrine\ORM\PersistentCollection {#4036 …} +favourites: Doctrine\ORM\PersistentCollection {#4034 …} +notifications: Doctrine\ORM\PersistentCollection {#4032 …} -id: 8472 -bodyTs: "'1.2':21 '10k':41 '2':39,72 '2.4':11,17,57 'alway':70 'bit':62 'buffer':51 'chang':59 'circuit':8,67 'configur':52 'consid':34 'els':9 'even':54 'exact':23 'feed':46 'half':24 'keep':20 'littl':61 'opamp':49 'produc':28 'provid':15 'recommend':5 'refer':58 'resistor':42 'seri':44 'side':65 'someth':7 'split':35 'thank':1 'v':12,18,22 'voltag':37 'would':14,68 'x':40 'zener':13,27,31,71" +ranking: 0 +commentCount: 0 +upVotes: 0 +downVotes: 0 +visibility: "visible " +apId: "https://discuss.tchncs.de/comment/662713" +editedAt: DateTimeImmutable @1688588351 {#4040 : 2023-07-05 22:19:11.0 +02:00 } +createdAt: DateTimeImmutable @1688587916 {#4038 : 2023-07-05 22:11:56.0 +02:00 } } -cache: Symfony\Component\Cache\Adapter\TraceableTagAwareAdapter {#600 …} } |
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Yes, I picked a HR202 to challenge myself to make it work. I already have some easier-to-use SHT40 in stock.\n \n This sensor can only run with AC 1.5Vpeak max. So, I’ve created this little circuit to provide AC, and I’ll only read it when the oscillator output is HIGH, so I can read it briefly at the same time with the help of Arduino’s ADC. Could this circuit work? Thank you. 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A 2.4v zener does NOT have exactly 2.4v across it. A 1.2 v supply will not be precisely 1.2v. Both will also vary with time and temperature. So, in practice there WILL be a dc component across the sensor - which will destroy it." +lang: "en" +isAdult: false +favouriteCount: 0 +score: 0 +lastActive: DateTime @1688761531 {#4029 : 2023-07-07 22:25:31.0 +02:00 } +ip: null +tags: null +mentions: [ "@macusking@discuss.tchncs.de" ] +children: Doctrine\ORM\PersistentCollection {#4018 …} +nested: Doctrine\ORM\PersistentCollection {#4016 …} +votes: Doctrine\ORM\PersistentCollection {#4014 …} +reports: Doctrine\ORM\PersistentCollection {#4012 …} +favourites: Doctrine\ORM\PersistentCollection {#3980 …} +notifications: Doctrine\ORM\PersistentCollection {#3984 …} -id: 8469 -bodyTs: "'1.2':28,35 '2.4':16,23 'across':25,54 'also':39 'assum':3 'compon':53 'constant':12 'dc':52 'destroy':59 'exact':22 'm':2 'meter':9 'practic':47 'precis':34 'sensor':56 'sourc':14 'suppli':30 'temperatur':44 'time':42 'v':6,17,24,29,36 'vari':40 'voltag':13 'zener':18" +ranking: 0 +commentCount: 0 +upVotes: 0 +downVotes: 0 +visibility: "visible " +apId: "https://discuss.tchncs.de/comment/661762" +editedAt: null +createdAt: DateTimeImmutable @1688586156 {#3965 : 2023-07-05 21:42:36.0 +02:00 } } +root: App\Entity\EntryComment {#4020} +body: "Thank you. Do you recommend me something (circuit) else? The 2.4v zener would provide about 2.4v. To keep 1.2V exactly half of the zener produced by the zener, I was considering split its voltage with 2 x 10k resistor in series and feed into an opamp in buffer configuration, so even it the 2.4 reference changes a little bit, the other side of circuit would be always zener / 2." +lang: "en" +isAdult: false +favouriteCount: 0 +score: 0 +lastActive: DateTime @1688587916 {#4043 : 2023-07-05 22:11:56.0 +02:00 } +ip: null +tags: null +mentions: [ "@macusking@discuss.tchncs.de" "@Susan_B_Good@discuss.tchncs.de" ] +children: Doctrine\ORM\PersistentCollection {#4051 …} +nested: Doctrine\ORM\PersistentCollection {#4053 …} +votes: Doctrine\ORM\PersistentCollection {#4055 …} +reports: Doctrine\ORM\PersistentCollection {#4036 …} +favourites: Doctrine\ORM\PersistentCollection {#4034 …} +notifications: Doctrine\ORM\PersistentCollection {#4032 …} -id: 8472 -bodyTs: "'1.2':21 '10k':41 '2':39,72 '2.4':11,17,57 'alway':70 'bit':62 'buffer':51 'chang':59 'circuit':8,67 'configur':52 'consid':34 'els':9 'even':54 'exact':23 'feed':46 'half':24 'keep':20 'littl':61 'opamp':49 'produc':28 'provid':15 'recommend':5 'refer':58 'resistor':42 'seri':44 'side':65 'someth':7 'split':35 'thank':1 'v':12,18,22 'voltag':37 'would':14,68 'x':40 'zener':13,27,31,71" +ranking: 0 +commentCount: 0 +upVotes: 0 +downVotes: 0 +visibility: "visible " +apId: "https://discuss.tchncs.de/comment/662713" +editedAt: DateTimeImmutable @1688588351 {#4040 : 2023-07-05 22:19:11.0 +02:00 } +createdAt: DateTimeImmutable @1688587916 {#4038 : 2023-07-05 22:11:56.0 +02:00 } } "level" => 2 "showNested" => true "view" => "tree" ] |
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Yes, I picked a HR202 to challenge myself to make it work. I already have some easier-to-use SHT40 in stock.\n \n This sensor can only run with AC 1.5Vpeak max. So, I’ve created this little circuit to provide AC, and I’ll only read it when the oscillator output is HIGH, so I can read it briefly at the same time with the help of Arduino’s ADC. Could this circuit work? Thank you. """ +type: "article" +lang: "en" +isOc: false +hasEmbed: false +commentCount: 4 +favouriteCount: 1 +score: 0 +isAdult: false +sticky: false +lastActive: DateTime @1688761530 {#2418 : 2023-07-07 22:25:30.0 +02:00 } +ip: null +adaAmount: 0 +tags: null +mentions: null +comments: Doctrine\ORM\PersistentCollection {#1688 …} +votes: Doctrine\ORM\PersistentCollection {#1966 …} +reports: Doctrine\ORM\PersistentCollection {#1965 …} +favourites: Doctrine\ORM\PersistentCollection {#1368 …} +notifications: Doctrine\ORM\PersistentCollection {#2426 …} +badges: Doctrine\ORM\PersistentCollection {#2439 …} +children: [] -id: 875 -titleTs: "'actual':10 'circuit':3 'hr202':7 'humid':8 'sensor':9 'use':5 'work':11 'would':1" -bodyTs: "'/pictrs/image/e2575314-be01-4a3f-bab2-cc75811b3ce8.png)':3 '1.5':44 'ac':43,56 'adc':85 'alreadi':27 'arduino':13,83 'briefli':74 'challeng':20 'circuit':53,88 'could':86 'creat':50 'discuss.tchncs.de':2 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+createdAt: DateTimeImmutable @1687249795 {#4022 : 2023-06-20 10:29:55.0 +02:00 } } +entry: App\Entity\Entry {#2412} +magazine: App\Entity\Magazine {#264} +image: null +parent: null +root: null +body: "I’m assuming that those "v"s are meters and not constant voltage sources. A 2.4v zener does NOT have exactly 2.4v across it. A 1.2 v supply will not be precisely 1.2v. Both will also vary with time and temperature. So, in practice there WILL be a dc component across the sensor - which will destroy it." +lang: "en" +isAdult: false +favouriteCount: 0 +score: 0 +lastActive: DateTime @1688761531 {#4029 : 2023-07-07 22:25:31.0 +02:00 } +ip: null +tags: null +mentions: [ "@macusking@discuss.tchncs.de" ] +children: Doctrine\ORM\PersistentCollection {#4018 …} +nested: Doctrine\ORM\PersistentCollection {#4016 …} +votes: Doctrine\ORM\PersistentCollection {#4014 …} +reports: Doctrine\ORM\PersistentCollection {#4012 …} +favourites: Doctrine\ORM\PersistentCollection {#3980 …} +notifications: Doctrine\ORM\PersistentCollection {#3984 …} -id: 8469 -bodyTs: "'1.2':28,35 '2.4':16,23 'across':25,54 'also':39 'assum':3 'compon':53 'constant':12 'dc':52 'destroy':59 'exact':22 'm':2 'meter':9 'practic':47 'precis':34 'sensor':56 'sourc':14 'suppli':30 'temperatur':44 'time':42 'v':6,17,24,29,36 'vari':40 'voltag':13 'zener':18" +ranking: 0 +commentCount: 0 +upVotes: 0 +downVotes: 0 +visibility: "visible " +apId: "https://discuss.tchncs.de/comment/661762" +editedAt: null +createdAt: DateTimeImmutable @1688586156 {#3965 : 2023-07-05 21:42:36.0 +02:00 } } +root: App\Entity\EntryComment {#4020} +body: "Thank you. Do you recommend me something (circuit) else? The 2.4v zener would provide about 2.4v. To keep 1.2V exactly half of the zener produced by the zener, I was considering split its voltage with 2 x 10k resistor in series and feed into an opamp in buffer configuration, so even it the 2.4 reference changes a little bit, the other side of circuit would be always zener / 2." +lang: "en" +isAdult: false +favouriteCount: 0 +score: 0 +lastActive: DateTime @1688587916 {#4043 : 2023-07-05 22:11:56.0 +02:00 } +ip: null +tags: null +mentions: [ "@macusking@discuss.tchncs.de" "@Susan_B_Good@discuss.tchncs.de" ] +children: Doctrine\ORM\PersistentCollection {#4051 …} +nested: Doctrine\ORM\PersistentCollection {#4053 …} +votes: Doctrine\ORM\PersistentCollection {#4055 …} +reports: Doctrine\ORM\PersistentCollection {#4036 …} +favourites: Doctrine\ORM\PersistentCollection {#4034 …} +notifications: Doctrine\ORM\PersistentCollection {#4032 …} -id: 8472 -bodyTs: "'1.2':21 '10k':41 '2':39,72 '2.4':11,17,57 'alway':70 'bit':62 'buffer':51 'chang':59 'circuit':8,67 'configur':52 'consid':34 'els':9 'even':54 'exact':23 'feed':46 'half':24 'keep':20 'littl':61 'opamp':49 'produc':28 'provid':15 'recommend':5 'refer':58 'resistor':42 'seri':44 'side':65 'someth':7 'split':35 'thank':1 'v':12,18,22 'voltag':37 'would':14,68 'x':40 'zener':13,27,31,71" +ranking: 0 +commentCount: 0 +upVotes: 0 +downVotes: 0 +visibility: "visible " +apId: "https://discuss.tchncs.de/comment/662713" +editedAt: DateTimeImmutable @1688588351 {#4040 : 2023-07-05 22:19:11.0 +02:00 } +createdAt: DateTimeImmutable @1688587916 {#4038 : 2023-07-05 22:11:56.0 +02:00 } } +nestedComments: [] +level: 2 +view: "tree" -entryCommentRepository: App\Repository\EntryCommentRepository {#555 …} -twig: Twig\Environment {#1252 …} -security: Symfony\Bundle\SecurityBundle\Security {#1101 …} -cache: Symfony\Component\Cache\Adapter\TraceableTagAwareAdapter {#600 …} -requestStack: Symfony\Component\HttpFoundation\RequestStack {#1328 …} } |
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+title: "askelectronics" +description: """ **For questions about component-level electronic circuits, tools and equipment.**\n \n Rules\n -----\n \n 1: Be nice.\n \n 2: Be on-topic (eg: *Electronic*, not *electrical*).\n \n 3: No commercial stuff, buying, selling or valuations.\n \n 4: Be safe.\n \n --- """ +rules: null +subscriptionsCount: 1 +entryCount: 154 +entryCommentCount: 1230 +postCount: 1 +postCommentCount: 4 +isAdult: false +customCss: null +lastActive: DateTime @1729413608 {#274 : 2024-10-20 10:40:08.0 +02:00 } +markedForDeletionAt: null +tags: null +moderators: Doctrine\ORM\PersistentCollection {#236 …} +ownershipRequests: Doctrine\ORM\PersistentCollection {#232 …} +moderatorRequests: Doctrine\ORM\PersistentCollection {#221 …} +entries: Doctrine\ORM\PersistentCollection {#179 …} +posts: Doctrine\ORM\PersistentCollection {#137 …} +subscriptions: Doctrine\ORM\PersistentCollection {#199 …} +bans: Doctrine\ORM\PersistentCollection {#116 …} +reports: 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"Would-this-circuit-to-use-an-HR202-humidity-sensor-actually" +title: "Would this circuit to use an HR202 humidity sensor actually work?" +url: null +body: """ \n \n I wanna run a HR202 moisture sensor and an Arduino. Yes, I picked a HR202 to challenge myself to make it work. I already have some easier-to-use SHT40 in stock.\n \n This sensor can only run with AC 1.5Vpeak max. So, I’ve created this little circuit to provide AC, and I’ll only read it when the oscillator output is HIGH, so I can read it briefly at the same time with the help of Arduino’s ADC. Could this circuit work? Thank you. """ +type: "article" +lang: "en" +isOc: false +hasEmbed: false +commentCount: 4 +favouriteCount: 1 +score: 0 +isAdult: false +sticky: false +lastActive: DateTime @1688761530 {#2418 : 2023-07-07 22:25:30.0 +02:00 } +ip: null +adaAmount: 0 +tags: null +mentions: null +comments: Doctrine\ORM\PersistentCollection {#1688 …} +votes: Doctrine\ORM\PersistentCollection {#1966 …} +reports: Doctrine\ORM\PersistentCollection {#1965 …} +favourites: Doctrine\ORM\PersistentCollection {#1368 …} +notifications: Doctrine\ORM\PersistentCollection {#2426 …} +badges: Doctrine\ORM\PersistentCollection {#2439 …} +children: [] -id: 875 -titleTs: "'actual':10 'circuit':3 'hr202':7 'humid':8 'sensor':9 'use':5 'work':11 'would':1" -bodyTs: "'/pictrs/image/e2575314-be01-4a3f-bab2-cc75811b3ce8.png)':3 '1.5':44 'ac':43,56 'adc':85 'alreadi':27 'arduino':13,83 'briefli':74 'challeng':20 'circuit':53,88 'could':86 'creat':50 'discuss.tchncs.de':2 'discuss.tchncs.de/pictrs/image/e2575314-be01-4a3f-bab2-cc75811b3ce8.png)':1 'easier':31 'easier-to-us':30 'help':81 'high':68 'hr202':8,18 'littl':52 'll':59 'make':23 'max':46 'moistur':9 'oscil':65 'output':66 'pick':16 'provid':55 'read':61,72 'run':6,41 'sensor':10,38 'sht40':34 'stock':36 'thank':90 'time':78 'use':33 've':49 'vpeak':45 'wanna':5 'work':25,89 'yes':14" +cross: false +upVotes: 0 +downVotes: 0 +ranking: 1688598501 +visibility: "visible " +apId: "https://discuss.tchncs.de/post/505309" +editedAt: null +createdAt: DateTimeImmutable @1688582501 {#1858 : 2023-07-05 20:41:41.0 +02:00 } } +magazine: App\Entity\Magazine {#264} +image: null +parent: App\Entity\EntryComment {#4048 +user: Proxies\__CG__\App\Entity\User {#1978 …2} +entry: App\Entity\Entry {#2412} +magazine: App\Entity\Magazine {#264} +image: null +parent: App\Entity\EntryComment {#4020 +user: App\Entity\User {#3968} +entry: App\Entity\Entry {#2412} +magazine: App\Entity\Magazine {#264} +image: null +parent: null +root: null +body: "I’m assuming that those "v"s are meters and not constant voltage sources. A 2.4v zener does NOT have exactly 2.4v across it. A 1.2 v supply will not be precisely 1.2v. Both will also vary with time and temperature. So, in practice there WILL be a dc component across the sensor - which will destroy it." +lang: "en" +isAdult: false +favouriteCount: 0 +score: 0 +lastActive: DateTime @1688761531 {#4029 : 2023-07-07 22:25:31.0 +02:00 } +ip: null +tags: null +mentions: [ "@macusking@discuss.tchncs.de" ] +children: Doctrine\ORM\PersistentCollection {#4018 …} +nested: Doctrine\ORM\PersistentCollection {#4016 …} +votes: Doctrine\ORM\PersistentCollection {#4014 …} +reports: Doctrine\ORM\PersistentCollection {#4012 …} +favourites: Doctrine\ORM\PersistentCollection {#3980 …} +notifications: Doctrine\ORM\PersistentCollection {#3984 …} -id: 8469 -bodyTs: "'1.2':28,35 '2.4':16,23 'across':25,54 'also':39 'assum':3 'compon':53 'constant':12 'dc':52 'destroy':59 'exact':22 'm':2 'meter':9 'practic':47 'precis':34 'sensor':56 'sourc':14 'suppli':30 'temperatur':44 'time':42 'v':6,17,24,29,36 'vari':40 'voltag':13 'zener':18" +ranking: 0 +commentCount: 0 +upVotes: 0 +downVotes: 0 +visibility: "visible " +apId: "https://discuss.tchncs.de/comment/661762" +editedAt: null +createdAt: DateTimeImmutable @1688586156 {#3965 : 2023-07-05 21:42:36.0 +02:00 } } +root: App\Entity\EntryComment {#4020} +body: "Thank you. Do you recommend me something (circuit) else? The 2.4v zener would provide about 2.4v. To keep 1.2V exactly half of the zener produced by the zener, I was considering split its voltage with 2 x 10k resistor in series and feed into an opamp in buffer configuration, so even it the 2.4 reference changes a little bit, the other side of circuit would be always zener / 2." +lang: "en" +isAdult: false +favouriteCount: 0 +score: 0 +lastActive: DateTime @1688587916 {#4043 : 2023-07-05 22:11:56.0 +02:00 } +ip: null +tags: null +mentions: [ "@macusking@discuss.tchncs.de" "@Susan_B_Good@discuss.tchncs.de" ] +children: Doctrine\ORM\PersistentCollection {#4051 …} +nested: Doctrine\ORM\PersistentCollection {#4053 …} +votes: Doctrine\ORM\PersistentCollection {#4055 …} +reports: Doctrine\ORM\PersistentCollection {#4036 …} +favourites: Doctrine\ORM\PersistentCollection {#4034 …} +notifications: Doctrine\ORM\PersistentCollection {#4032 …} -id: 8472 -bodyTs: "'1.2':21 '10k':41 '2':39,72 '2.4':11,17,57 'alway':70 'bit':62 'buffer':51 'chang':59 'circuit':8,67 'configur':52 'consid':34 'els':9 'even':54 'exact':23 'feed':46 'half':24 'keep':20 'littl':61 'opamp':49 'produc':28 'provid':15 'recommend':5 'refer':58 'resistor':42 'seri':44 'side':65 'someth':7 'split':35 'thank':1 'v':12,18,22 'voltag':37 'would':14,68 'x':40 'zener':13,27,31,71" +ranking: 0 +commentCount: 0 +upVotes: 0 +downVotes: 0 +visibility: "visible " +apId: "https://discuss.tchncs.de/comment/662713" +editedAt: DateTimeImmutable @1688588351 {#4040 : 2023-07-05 22:19:11.0 +02:00 } +createdAt: DateTimeImmutable @1688587916 {#4038 : 2023-07-05 22:11:56.0 +02:00 } } +root: App\Entity\EntryComment {#4020} +body: "How I would do it is to use two digital IO pins on the processor to generate the reference square wave. Put the sensor plus a series precision resistor between them and just pull one IO pin high as the other is pulled low and then swap them. That presumes that IO pins can both source and sink IO current. Then take the junction between the two to an Analogue in pin. You get two measurements each cycle. Use a lookup table of values and interpolate between them. If you wanted more precision - add more series resistors of different values covering the range of humidity that you want to sense, going to different IO pins. So you can choose the IO pin pair that brings the centre point between sensor and resistor closest to the mid-voltage point. It’s effectively a balanced half bridge arrangement - using the precision of the resistors to determine overall measurement precision. OK it ties up several IO pins - but microcontrollers are so cheap, I’d probably just dedicate one to this sensor and that’s all that it would do." +lang: "en" +isAdult: false +favouriteCount: 1 +score: 0 +lastActive: DateTime @1688622526 {#4098 : 2023-07-06 07:48:46.0 +02:00 } +ip: null +tags: null +mentions: [ "@macusking@discuss.tchncs.de" "@Susan_B_Good@discuss.tchncs.de" ] +children: Doctrine\ORM\PersistentCollection {#4095 …} +nested: Doctrine\ORM\PersistentCollection {#4092 …} +votes: Doctrine\ORM\PersistentCollection {#4089 …} +reports: Doctrine\ORM\PersistentCollection {#4104 …} +favourites: Doctrine\ORM\PersistentCollection {#4106 …} +notifications: Doctrine\ORM\PersistentCollection {#4108 …} -id: 8568 -bodyTs: "'add':94 'analogu':70 'arrang':147 'balanc':144 'bridg':146 'bring':125 'centr':127 'cheap':170 'choos':119 'closest':133 'cover':101 'current':60 'cycl':78 'd':172 'dedic':175 'determin':155 'differ':99,113 'digit':10 'effect':142 'generat':17 'get':74 'go':111 'half':145 'high':38 'humid':105 'interpol':86 'io':11,36,52,59,114,121,164 'junction':64 'lookup':81 'low':44 'measur':76,157 'microcontrol':167 'mid':137 'mid-voltag':136 'ok':159 'one':35,176 'overal':156 'pair':123 'pin':12,37,53,72,115,122,165 'plus':25 'point':128,139 'precis':28,93,150,158 'presum':50 'probabl':173 'processor':15 'pull':34,43 'put':22 'rang':103 'refer':19 'resistor':29,97,132,153 'sens':110 'sensor':24,130,179 'seri':27,96 'sever':163 'sink':58 'sourc':56 'squar':20 'swap':47 'tabl':82 'take':62 'tie':161 'two':9,67,75 'use':8,79,148 'valu':84,100 'voltag':138 'want':91,108 'wave':21 'would':3,186" +ranking: 0 +commentCount: 0 +upVotes: 0 +downVotes: 0 +visibility: "visible " +apId: "https://discuss.tchncs.de/comment/678173" +editedAt: null +createdAt: DateTimeImmutable @1688622526 {#4101 : 2023-07-06 07:48:46.0 +02:00 } } "showNested" => true "level" => 3 "showEntryTitle" => false "showMagazineName" => false ] |
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+name: "askelectronics@discuss.tchncs.de" +title: "askelectronics" +description: """ **For questions about component-level electronic circuits, tools and equipment.**\n \n Rules\n -----\n \n 1: Be nice.\n \n 2: Be on-topic (eg: *Electronic*, not *electrical*).\n \n 3: No commercial stuff, buying, selling or valuations.\n \n 4: Be safe.\n \n --- """ +rules: null +subscriptionsCount: 1 +entryCount: 154 +entryCommentCount: 1230 +postCount: 1 +postCommentCount: 4 +isAdult: false +customCss: null +lastActive: DateTime @1729413608 {#274 : 2024-10-20 10:40:08.0 +02:00 } +markedForDeletionAt: null +tags: null +moderators: Doctrine\ORM\PersistentCollection {#236 …} +ownershipRequests: Doctrine\ORM\PersistentCollection {#232 …} +moderatorRequests: Doctrine\ORM\PersistentCollection {#221 …} +entries: Doctrine\ORM\PersistentCollection {#179 …} +posts: Doctrine\ORM\PersistentCollection {#137 …} +subscriptions: Doctrine\ORM\PersistentCollection {#199 …} +bans: Doctrine\ORM\PersistentCollection {#116 …} +reports: Doctrine\ORM\PersistentCollection {#102 …} +badges: Doctrine\ORM\PersistentCollection {#80 …} +logs: Doctrine\ORM\PersistentCollection {#70 …} +awards: Doctrine\ORM\PersistentCollection {#1360 …} +categories: Doctrine\ORM\PersistentCollection {#1792 …} -id: 11 +apId: "askelectronics@discuss.tchncs.de" +apProfileId: "https://discuss.tchncs.de/c/askelectronics" +apPublicUrl: "https://discuss.tchncs.de/c/askelectronics" +apFollowersUrl: "https://discuss.tchncs.de/c/askelectronics/followers" +apInboxUrl: "https://discuss.tchncs.de/inbox" +apDomain: "discuss.tchncs.de" +apPreferredUsername: "askelectronics" +apDiscoverable: true +apManuallyApprovesFollowers: null +privateKey: null +publicKey: null +apFetchedAt: DateTime @1727247714 {#268 : 2024-09-25 09:01:54.0 +02:00 } +apDeletedAt: null +apTimeoutAt: null +visibility: "visible " +createdAt: DateTimeImmutable @1687144409 {#270 : 2023-06-19 05:13:29.0 +02:00 } } +image: null +domain: Proxies\__CG__\App\Entity\Domain {#1889 …} +slug: "Would-this-circuit-to-use-an-HR202-humidity-sensor-actually" +title: "Would this circuit to use an HR202 humidity sensor actually work?" +url: null +body: """ \n \n I wanna run a HR202 moisture sensor and an Arduino. Yes, I picked a HR202 to challenge myself to make it work. I already have some easier-to-use SHT40 in stock.\n \n This sensor can only run with AC 1.5Vpeak max. So, I’ve created this little circuit to provide AC, and I’ll only read it when the oscillator output is HIGH, so I can read it briefly at the same time with the help of Arduino’s ADC. Could this circuit work? Thank you. """ +type: "article" +lang: "en" +isOc: false +hasEmbed: false +commentCount: 4 +favouriteCount: 1 +score: 0 +isAdult: false +sticky: false +lastActive: DateTime @1688761530 {#2418 : 2023-07-07 22:25:30.0 +02:00 } +ip: null +adaAmount: 0 +tags: null +mentions: null +comments: Doctrine\ORM\PersistentCollection {#1688 …} +votes: Doctrine\ORM\PersistentCollection {#1966 …} +reports: Doctrine\ORM\PersistentCollection {#1965 …} +favourites: Doctrine\ORM\PersistentCollection {#1368 …} +notifications: Doctrine\ORM\PersistentCollection {#2426 …} +badges: Doctrine\ORM\PersistentCollection {#2439 …} +children: [] -id: 875 -titleTs: "'actual':10 'circuit':3 'hr202':7 'humid':8 'sensor':9 'use':5 'work':11 'would':1" -bodyTs: "'/pictrs/image/e2575314-be01-4a3f-bab2-cc75811b3ce8.png)':3 '1.5':44 'ac':43,56 'adc':85 'alreadi':27 'arduino':13,83 'briefli':74 'challeng':20 'circuit':53,88 'could':86 'creat':50 'discuss.tchncs.de':2 'discuss.tchncs.de/pictrs/image/e2575314-be01-4a3f-bab2-cc75811b3ce8.png)':1 'easier':31 'easier-to-us':30 'help':81 'high':68 'hr202':8,18 'littl':52 'll':59 'make':23 'max':46 'moistur':9 'oscil':65 'output':66 'pick':16 'provid':55 'read':61,72 'run':6,41 'sensor':10,38 'sht40':34 'stock':36 'thank':90 'time':78 'use':33 've':49 'vpeak':45 'wanna':5 'work':25,89 'yes':14" +cross: false +upVotes: 0 +downVotes: 0 +ranking: 1688598501 +visibility: "visible " +apId: "https://discuss.tchncs.de/post/505309" +editedAt: null +createdAt: DateTimeImmutable @1688582501 {#1858 : 2023-07-05 20:41:41.0 +02:00 } } +magazine: App\Entity\Magazine {#264} +image: null +parent: App\Entity\EntryComment {#4048 +user: Proxies\__CG__\App\Entity\User {#1978 …2} +entry: App\Entity\Entry {#2412} +magazine: App\Entity\Magazine {#264} +image: null +parent: App\Entity\EntryComment {#4020 +user: App\Entity\User {#3968} +entry: App\Entity\Entry {#2412} +magazine: App\Entity\Magazine {#264} +image: null +parent: null +root: null +body: "I’m assuming that those "v"s are meters and not constant voltage sources. A 2.4v zener does NOT have exactly 2.4v across it. A 1.2 v supply will not be precisely 1.2v. Both will also vary with time and temperature. So, in practice there WILL be a dc component across the sensor - which will destroy it." +lang: "en" +isAdult: false +favouriteCount: 0 +score: 0 +lastActive: DateTime @1688761531 {#4029 : 2023-07-07 22:25:31.0 +02:00 } +ip: null +tags: null +mentions: [ "@macusking@discuss.tchncs.de" ] +children: Doctrine\ORM\PersistentCollection {#4018 …} +nested: Doctrine\ORM\PersistentCollection {#4016 …} +votes: Doctrine\ORM\PersistentCollection {#4014 …} +reports: Doctrine\ORM\PersistentCollection {#4012 …} +favourites: Doctrine\ORM\PersistentCollection {#3980 …} +notifications: Doctrine\ORM\PersistentCollection {#3984 …} -id: 8469 -bodyTs: "'1.2':28,35 '2.4':16,23 'across':25,54 'also':39 'assum':3 'compon':53 'constant':12 'dc':52 'destroy':59 'exact':22 'm':2 'meter':9 'practic':47 'precis':34 'sensor':56 'sourc':14 'suppli':30 'temperatur':44 'time':42 'v':6,17,24,29,36 'vari':40 'voltag':13 'zener':18" +ranking: 0 +commentCount: 0 +upVotes: 0 +downVotes: 0 +visibility: "visible " +apId: "https://discuss.tchncs.de/comment/661762" +editedAt: null +createdAt: DateTimeImmutable @1688586156 {#3965 : 2023-07-05 21:42:36.0 +02:00 } } +root: App\Entity\EntryComment {#4020} +body: "Thank you. Do you recommend me something (circuit) else? The 2.4v zener would provide about 2.4v. To keep 1.2V exactly half of the zener produced by the zener, I was considering split its voltage with 2 x 10k resistor in series and feed into an opamp in buffer configuration, so even it the 2.4 reference changes a little bit, the other side of circuit would be always zener / 2." +lang: "en" +isAdult: false +favouriteCount: 0 +score: 0 +lastActive: DateTime @1688587916 {#4043 : 2023-07-05 22:11:56.0 +02:00 } +ip: null +tags: null +mentions: [ "@macusking@discuss.tchncs.de" "@Susan_B_Good@discuss.tchncs.de" ] +children: Doctrine\ORM\PersistentCollection {#4051 …} +nested: Doctrine\ORM\PersistentCollection {#4053 …} +votes: Doctrine\ORM\PersistentCollection {#4055 …} +reports: Doctrine\ORM\PersistentCollection {#4036 …} +favourites: Doctrine\ORM\PersistentCollection {#4034 …} +notifications: Doctrine\ORM\PersistentCollection {#4032 …} -id: 8472 -bodyTs: "'1.2':21 '10k':41 '2':39,72 '2.4':11,17,57 'alway':70 'bit':62 'buffer':51 'chang':59 'circuit':8,67 'configur':52 'consid':34 'els':9 'even':54 'exact':23 'feed':46 'half':24 'keep':20 'littl':61 'opamp':49 'produc':28 'provid':15 'recommend':5 'refer':58 'resistor':42 'seri':44 'side':65 'someth':7 'split':35 'thank':1 'v':12,18,22 'voltag':37 'would':14,68 'x':40 'zener':13,27,31,71" +ranking: 0 +commentCount: 0 +upVotes: 0 +downVotes: 0 +visibility: "visible " +apId: "https://discuss.tchncs.de/comment/662713" +editedAt: DateTimeImmutable @1688588351 {#4040 : 2023-07-05 22:19:11.0 +02:00 } +createdAt: DateTimeImmutable @1688587916 {#4038 : 2023-07-05 22:11:56.0 +02:00 } } +root: App\Entity\EntryComment {#4020} +body: "How I would do it is to use two digital IO pins on the processor to generate the reference square wave. Put the sensor plus a series precision resistor between them and just pull one IO pin high as the other is pulled low and then swap them. That presumes that IO pins can both source and sink IO current. Then take the junction between the two to an Analogue in pin. You get two measurements each cycle. Use a lookup table of values and interpolate between them. If you wanted more precision - add more series resistors of different values covering the range of humidity that you want to sense, going to different IO pins. So you can choose the IO pin pair that brings the centre point between sensor and resistor closest to the mid-voltage point. It’s effectively a balanced half bridge arrangement - using the precision of the resistors to determine overall measurement precision. OK it ties up several IO pins - but microcontrollers are so cheap, I’d probably just dedicate one to this sensor and that’s all that it would do." +lang: "en" +isAdult: false +favouriteCount: 1 +score: 0 +lastActive: DateTime @1688622526 {#4098 : 2023-07-06 07:48:46.0 +02:00 } +ip: null +tags: null +mentions: [ "@macusking@discuss.tchncs.de" "@Susan_B_Good@discuss.tchncs.de" ] +children: Doctrine\ORM\PersistentCollection {#4095 …} +nested: Doctrine\ORM\PersistentCollection {#4092 …} +votes: Doctrine\ORM\PersistentCollection {#4089 …} +reports: Doctrine\ORM\PersistentCollection {#4104 …} +favourites: Doctrine\ORM\PersistentCollection {#4106 …} +notifications: Doctrine\ORM\PersistentCollection {#4108 …} -id: 8568 -bodyTs: "'add':94 'analogu':70 'arrang':147 'balanc':144 'bridg':146 'bring':125 'centr':127 'cheap':170 'choos':119 'closest':133 'cover':101 'current':60 'cycl':78 'd':172 'dedic':175 'determin':155 'differ':99,113 'digit':10 'effect':142 'generat':17 'get':74 'go':111 'half':145 'high':38 'humid':105 'interpol':86 'io':11,36,52,59,114,121,164 'junction':64 'lookup':81 'low':44 'measur':76,157 'microcontrol':167 'mid':137 'mid-voltag':136 'ok':159 'one':35,176 'overal':156 'pair':123 'pin':12,37,53,72,115,122,165 'plus':25 'point':128,139 'precis':28,93,150,158 'presum':50 'probabl':173 'processor':15 'pull':34,43 'put':22 'rang':103 'refer':19 'resistor':29,97,132,153 'sens':110 'sensor':24,130,179 'seri':27,96 'sever':163 'sink':58 'sourc':56 'squar':20 'swap':47 'tabl':82 'take':62 'tie':161 'two':9,67,75 'use':8,79,148 'valu':84,100 'voltag':138 'want':91,108 'wave':21 'would':3,186" +ranking: 0 +commentCount: 0 +upVotes: 0 +downVotes: 0 +visibility: "visible " +apId: "https://discuss.tchncs.de/comment/678173" +editedAt: null +createdAt: DateTimeImmutable @1688622526 {#4101 : 2023-07-06 07:48:46.0 +02:00 } } +showMagazineName: false +showEntryTitle: false +showNested: true +level: 3 +canSeeTrash: false +dateAsUrl: false -requestStack: Symfony\Component\HttpFoundation\RequestStack {#1328 …} -authorizationChecker: Symfony\Component\Security\Core\Authorization\AuthorizationChecker {#931 …} } |
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user_avatar | App\Twig\Components\UserAvatarComponent | 12.0 MiB | 0.14 ms | |
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vote | App\Twig\Components\VoteComponent | 12.0 MiB | 0.46 ms | |
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+categories: Doctrine\ORM\PersistentCollection {#1640 …} -id: 19399 -password: "$2y$13$GtA6yJr0SHJf/70Uom7/xuVlLxced/g77qbWw1CPRQVbQEuUFzyGS" -totpSecret: null -totpBackupCodes: [] -oAuth2UserConsents: Doctrine\ORM\PersistentCollection {#1669 …} +apId: "macusking@discuss.tchncs.de" +apProfileId: "https://discuss.tchncs.de/u/macusking" +apPublicUrl: "https://discuss.tchncs.de/u/macusking" +apFollowersUrl: null +apInboxUrl: "https://discuss.tchncs.de/inbox" +apDomain: "discuss.tchncs.de" +apPreferredUsername: "macusking" +apDiscoverable: true +apManuallyApprovesFollowers: false +privateKey: null +publicKey: null +apFetchedAt: DateTime @1688761497 {#1516 : 2023-07-07 22:24:57.0 +02:00 } +apDeletedAt: null +apTimeoutAt: null +visibility: "visible " +createdAt: DateTimeImmutable @1688582502 {#1518 : 2023-07-05 20:41:42.0 +02:00 } +__isInitialized__: true …2 } +magazine: App\Entity\Magazine {#264 +icon: Proxies\__CG__\App\Entity\Image {#245 …} +name: "askelectronics@discuss.tchncs.de" +title: "askelectronics" +description: """ **For questions about component-level electronic circuits, tools and equipment.**\n \n Rules\n -----\n \n 1: Be nice.\n \n 2: Be on-topic (eg: *Electronic*, not *electrical*).\n \n 3: No commercial stuff, buying, selling or valuations.\n \n 4: Be safe.\n \n --- """ +rules: null +subscriptionsCount: 1 +entryCount: 154 +entryCommentCount: 1230 +postCount: 1 +postCommentCount: 4 +isAdult: false +customCss: null +lastActive: DateTime @1729413608 {#274 : 2024-10-20 10:40:08.0 +02:00 } +markedForDeletionAt: null +tags: null +moderators: Doctrine\ORM\PersistentCollection {#236 …} +ownershipRequests: Doctrine\ORM\PersistentCollection {#232 …} +moderatorRequests: Doctrine\ORM\PersistentCollection {#221 …} +entries: Doctrine\ORM\PersistentCollection {#179 …} +posts: Doctrine\ORM\PersistentCollection {#137 …} +subscriptions: Doctrine\ORM\PersistentCollection {#199 …} +bans: Doctrine\ORM\PersistentCollection {#116 …} +reports: Doctrine\ORM\PersistentCollection {#102 …} +badges: Doctrine\ORM\PersistentCollection {#80 …} +logs: Doctrine\ORM\PersistentCollection {#70 …} +awards: Doctrine\ORM\PersistentCollection {#1360 …} +categories: Doctrine\ORM\PersistentCollection {#1792 …} -id: 11 +apId: "askelectronics@discuss.tchncs.de" +apProfileId: "https://discuss.tchncs.de/c/askelectronics" +apPublicUrl: "https://discuss.tchncs.de/c/askelectronics" +apFollowersUrl: "https://discuss.tchncs.de/c/askelectronics/followers" +apInboxUrl: "https://discuss.tchncs.de/inbox" +apDomain: "discuss.tchncs.de" +apPreferredUsername: "askelectronics" +apDiscoverable: true +apManuallyApprovesFollowers: null +privateKey: null +publicKey: null +apFetchedAt: DateTime @1727247714 {#268 : 2024-09-25 09:01:54.0 +02:00 } +apDeletedAt: null +apTimeoutAt: null +visibility: "visible " +createdAt: DateTimeImmutable @1687144409 {#270 : 2023-06-19 05:13:29.0 +02:00 } } +image: null +domain: Proxies\__CG__\App\Entity\Domain {#1889 …} +slug: "Would-this-circuit-to-use-an-HR202-humidity-sensor-actually" +title: "Would this circuit to use an HR202 humidity sensor actually work?" +url: null +body: """ \n \n I wanna run a HR202 moisture sensor and an Arduino. Yes, I picked a HR202 to challenge myself to make it work. I already have some easier-to-use SHT40 in stock.\n \n This sensor can only run with AC 1.5Vpeak max. So, I’ve created this little circuit to provide AC, and I’ll only read it when the oscillator output is HIGH, so I can read it briefly at the same time with the help of Arduino’s ADC. Could this circuit work? Thank you. """ +type: "article" +lang: "en" +isOc: false +hasEmbed: false +commentCount: 4 +favouriteCount: 1 +score: 0 +isAdult: false +sticky: false +lastActive: DateTime @1688761530 {#2418 : 2023-07-07 22:25:30.0 +02:00 } +ip: null +adaAmount: 0 +tags: null +mentions: null +comments: Doctrine\ORM\PersistentCollection {#1688 …} +votes: Doctrine\ORM\PersistentCollection {#1966 …} +reports: Doctrine\ORM\PersistentCollection {#1965 …} +favourites: Doctrine\ORM\PersistentCollection {#1368 …} +notifications: Doctrine\ORM\PersistentCollection {#2426 …} +badges: Doctrine\ORM\PersistentCollection {#2439 …} +children: [] -id: 875 -titleTs: "'actual':10 'circuit':3 'hr202':7 'humid':8 'sensor':9 'use':5 'work':11 'would':1" -bodyTs: "'/pictrs/image/e2575314-be01-4a3f-bab2-cc75811b3ce8.png)':3 '1.5':44 'ac':43,56 'adc':85 'alreadi':27 'arduino':13,83 'briefli':74 'challeng':20 'circuit':53,88 'could':86 'creat':50 'discuss.tchncs.de':2 'discuss.tchncs.de/pictrs/image/e2575314-be01-4a3f-bab2-cc75811b3ce8.png)':1 'easier':31 'easier-to-us':30 'help':81 'high':68 'hr202':8,18 'littl':52 'll':59 'make':23 'max':46 'moistur':9 'oscil':65 'output':66 'pick':16 'provid':55 'read':61,72 'run':6,41 'sensor':10,38 'sht40':34 'stock':36 'thank':90 'time':78 'use':33 've':49 'vpeak':45 'wanna':5 'work':25,89 'yes':14" +cross: false +upVotes: 0 +downVotes: 0 +ranking: 1688598501 +visibility: "visible " +apId: "https://discuss.tchncs.de/post/505309" +editedAt: null +createdAt: DateTimeImmutable @1688582501 {#1858 : 2023-07-05 20:41:41.0 +02:00 } } +magazine: App\Entity\Magazine {#264} +image: null +parent: App\Entity\EntryComment {#4048 +user: Proxies\__CG__\App\Entity\User {#1978 …2} +entry: App\Entity\Entry {#2412} +magazine: App\Entity\Magazine {#264} +image: null +parent: App\Entity\EntryComment {#4020 +user: App\Entity\User {#3968} +entry: App\Entity\Entry {#2412} +magazine: App\Entity\Magazine {#264} +image: null +parent: null +root: null +body: "I’m assuming that those "v"s are meters and not constant voltage sources. A 2.4v zener does NOT have exactly 2.4v across it. A 1.2 v supply will not be precisely 1.2v. Both will also vary with time and temperature. So, in practice there WILL be a dc component across the sensor - which will destroy it." +lang: "en" +isAdult: false +favouriteCount: 0 +score: 0 +lastActive: DateTime @1688761531 {#4029 : 2023-07-07 22:25:31.0 +02:00 } +ip: null +tags: null +mentions: [ "@macusking@discuss.tchncs.de" ] +children: Doctrine\ORM\PersistentCollection {#4018 …} +nested: Doctrine\ORM\PersistentCollection {#4016 …} +votes: Doctrine\ORM\PersistentCollection {#4014 …} +reports: Doctrine\ORM\PersistentCollection {#4012 …} +favourites: Doctrine\ORM\PersistentCollection {#3980 …} +notifications: Doctrine\ORM\PersistentCollection {#3984 …} -id: 8469 -bodyTs: "'1.2':28,35 '2.4':16,23 'across':25,54 'also':39 'assum':3 'compon':53 'constant':12 'dc':52 'destroy':59 'exact':22 'm':2 'meter':9 'practic':47 'precis':34 'sensor':56 'sourc':14 'suppli':30 'temperatur':44 'time':42 'v':6,17,24,29,36 'vari':40 'voltag':13 'zener':18" +ranking: 0 +commentCount: 0 +upVotes: 0 +downVotes: 0 +visibility: "visible " +apId: "https://discuss.tchncs.de/comment/661762" +editedAt: null +createdAt: DateTimeImmutable @1688586156 {#3965 : 2023-07-05 21:42:36.0 +02:00 } } +root: App\Entity\EntryComment {#4020} +body: "Thank you. Do you recommend me something (circuit) else? The 2.4v zener would provide about 2.4v. To keep 1.2V exactly half of the zener produced by the zener, I was considering split its voltage with 2 x 10k resistor in series and feed into an opamp in buffer configuration, so even it the 2.4 reference changes a little bit, the other side of circuit would be always zener / 2." +lang: "en" +isAdult: false +favouriteCount: 0 +score: 0 +lastActive: DateTime @1688587916 {#4043 : 2023-07-05 22:11:56.0 +02:00 } +ip: null +tags: null +mentions: [ "@macusking@discuss.tchncs.de" "@Susan_B_Good@discuss.tchncs.de" ] +children: Doctrine\ORM\PersistentCollection {#4051 …} +nested: Doctrine\ORM\PersistentCollection {#4053 …} +votes: Doctrine\ORM\PersistentCollection {#4055 …} +reports: Doctrine\ORM\PersistentCollection {#4036 …} +favourites: Doctrine\ORM\PersistentCollection {#4034 …} +notifications: Doctrine\ORM\PersistentCollection {#4032 …} -id: 8472 -bodyTs: "'1.2':21 '10k':41 '2':39,72 '2.4':11,17,57 'alway':70 'bit':62 'buffer':51 'chang':59 'circuit':8,67 'configur':52 'consid':34 'els':9 'even':54 'exact':23 'feed':46 'half':24 'keep':20 'littl':61 'opamp':49 'produc':28 'provid':15 'recommend':5 'refer':58 'resistor':42 'seri':44 'side':65 'someth':7 'split':35 'thank':1 'v':12,18,22 'voltag':37 'would':14,68 'x':40 'zener':13,27,31,71" +ranking: 0 +commentCount: 0 +upVotes: 0 +downVotes: 0 +visibility: "visible " +apId: "https://discuss.tchncs.de/comment/662713" +editedAt: DateTimeImmutable @1688588351 {#4040 : 2023-07-05 22:19:11.0 +02:00 } +createdAt: DateTimeImmutable @1688587916 {#4038 : 2023-07-05 22:11:56.0 +02:00 } } +root: App\Entity\EntryComment {#4020} +body: "How I would do it is to use two digital IO pins on the processor to generate the reference square wave. Put the sensor plus a series precision resistor between them and just pull one IO pin high as the other is pulled low and then swap them. That presumes that IO pins can both source and sink IO current. Then take the junction between the two to an Analogue in pin. You get two measurements each cycle. Use a lookup table of values and interpolate between them. If you wanted more precision - add more series resistors of different values covering the range of humidity that you want to sense, going to different IO pins. So you can choose the IO pin pair that brings the centre point between sensor and resistor closest to the mid-voltage point. It’s effectively a balanced half bridge arrangement - using the precision of the resistors to determine overall measurement precision. OK it ties up several IO pins - but microcontrollers are so cheap, I’d probably just dedicate one to this sensor and that’s all that it would do." +lang: "en" +isAdult: false +favouriteCount: 1 +score: 0 +lastActive: DateTime @1688622526 {#4098 : 2023-07-06 07:48:46.0 +02:00 } +ip: null +tags: null +mentions: [ "@macusking@discuss.tchncs.de" "@Susan_B_Good@discuss.tchncs.de" ] +children: Doctrine\ORM\PersistentCollection {#4095 …} +nested: Doctrine\ORM\PersistentCollection {#4092 …} +votes: Doctrine\ORM\PersistentCollection {#4089 …} +reports: Doctrine\ORM\PersistentCollection {#4104 …} +favourites: Doctrine\ORM\PersistentCollection {#4106 …} +notifications: Doctrine\ORM\PersistentCollection {#4108 …} -id: 8568 -bodyTs: "'add':94 'analogu':70 'arrang':147 'balanc':144 'bridg':146 'bring':125 'centr':127 'cheap':170 'choos':119 'closest':133 'cover':101 'current':60 'cycl':78 'd':172 'dedic':175 'determin':155 'differ':99,113 'digit':10 'effect':142 'generat':17 'get':74 'go':111 'half':145 'high':38 'humid':105 'interpol':86 'io':11,36,52,59,114,121,164 'junction':64 'lookup':81 'low':44 'measur':76,157 'microcontrol':167 'mid':137 'mid-voltag':136 'ok':159 'one':35,176 'overal':156 'pair':123 'pin':12,37,53,72,115,122,165 'plus':25 'point':128,139 'precis':28,93,150,158 'presum':50 'probabl':173 'processor':15 'pull':34,43 'put':22 'rang':103 'refer':19 'resistor':29,97,132,153 'sens':110 'sensor':24,130,179 'seri':27,96 'sever':163 'sink':58 'sourc':56 'squar':20 'swap':47 'tabl':82 'take':62 'tie':161 'two':9,67,75 'use':8,79,148 'valu':84,100 'voltag':138 'want':91,108 'wave':21 'would':3,186" +ranking: 0 +commentCount: 0 +upVotes: 0 +downVotes: 0 +visibility: "visible " +apId: "https://discuss.tchncs.de/comment/678173" +editedAt: null +createdAt: DateTimeImmutable @1688622526 {#4101 : 2023-07-06 07:48:46.0 +02:00 } } ] |
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+name: "askelectronics@discuss.tchncs.de" +title: "askelectronics" +description: """ **For questions about component-level electronic circuits, tools and equipment.**\n \n Rules\n -----\n \n 1: Be nice.\n \n 2: Be on-topic (eg: *Electronic*, not *electrical*).\n \n 3: No commercial stuff, buying, selling or valuations.\n \n 4: Be safe.\n \n --- """ +rules: null +subscriptionsCount: 1 +entryCount: 154 +entryCommentCount: 1230 +postCount: 1 +postCommentCount: 4 +isAdult: false +customCss: null +lastActive: DateTime @1729413608 {#274 : 2024-10-20 10:40:08.0 +02:00 } +markedForDeletionAt: null +tags: null +moderators: Doctrine\ORM\PersistentCollection {#236 …} +ownershipRequests: Doctrine\ORM\PersistentCollection {#232 …} +moderatorRequests: Doctrine\ORM\PersistentCollection {#221 …} +entries: Doctrine\ORM\PersistentCollection {#179 …} +posts: Doctrine\ORM\PersistentCollection {#137 …} +subscriptions: Doctrine\ORM\PersistentCollection {#199 …} +bans: Doctrine\ORM\PersistentCollection {#116 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+slug: "Would-this-circuit-to-use-an-HR202-humidity-sensor-actually" +title: "Would this circuit to use an HR202 humidity sensor actually work?" +url: null +body: """ \n \n I wanna run a HR202 moisture sensor and an Arduino. Yes, I picked a HR202 to challenge myself to make it work. I already have some easier-to-use SHT40 in stock.\n \n This sensor can only run with AC 1.5Vpeak max. So, I’ve created this little circuit to provide AC, and I’ll only read it when the oscillator output is HIGH, so I can read it briefly at the same time with the help of Arduino’s ADC. Could this circuit work? Thank you. """ +type: "article" +lang: "en" +isOc: false +hasEmbed: false +commentCount: 4 +favouriteCount: 1 +score: 0 +isAdult: false +sticky: false +lastActive: DateTime @1688761530 {#2418 : 2023-07-07 22:25:30.0 +02:00 } +ip: null +adaAmount: 0 +tags: null +mentions: null +comments: Doctrine\ORM\PersistentCollection {#1688 …} +votes: Doctrine\ORM\PersistentCollection {#1966 …} +reports: Doctrine\ORM\PersistentCollection {#1965 …} +favourites: Doctrine\ORM\PersistentCollection {#1368 …} +notifications: Doctrine\ORM\PersistentCollection {#2426 …} +badges: Doctrine\ORM\PersistentCollection {#2439 …} +children: [] -id: 875 -titleTs: "'actual':10 'circuit':3 'hr202':7 'humid':8 'sensor':9 'use':5 'work':11 'would':1" -bodyTs: "'/pictrs/image/e2575314-be01-4a3f-bab2-cc75811b3ce8.png)':3 '1.5':44 'ac':43,56 'adc':85 'alreadi':27 'arduino':13,83 'briefli':74 'challeng':20 'circuit':53,88 'could':86 'creat':50 'discuss.tchncs.de':2 'discuss.tchncs.de/pictrs/image/e2575314-be01-4a3f-bab2-cc75811b3ce8.png)':1 'easier':31 'easier-to-us':30 'help':81 'high':68 'hr202':8,18 'littl':52 'll':59 'make':23 'max':46 'moistur':9 'oscil':65 'output':66 'pick':16 'provid':55 'read':61,72 'run':6,41 'sensor':10,38 'sht40':34 'stock':36 'thank':90 'time':78 'use':33 've':49 'vpeak':45 'wanna':5 'work':25,89 'yes':14" +cross: false +upVotes: 0 +downVotes: 0 +ranking: 1688598501 +visibility: "visible " +apId: "https://discuss.tchncs.de/post/505309" +editedAt: null +createdAt: DateTimeImmutable @1688582501 {#1858 : 2023-07-05 20:41:41.0 +02:00 } } +magazine: App\Entity\Magazine {#264} +image: null +parent: App\Entity\EntryComment {#4048 +user: Proxies\__CG__\App\Entity\User {#1978 …2} +entry: App\Entity\Entry {#2412} +magazine: App\Entity\Magazine {#264} +image: null +parent: App\Entity\EntryComment {#4020 +user: App\Entity\User {#3968} +entry: App\Entity\Entry {#2412} +magazine: App\Entity\Magazine {#264} +image: null +parent: null +root: null +body: "I’m assuming that those "v"s are meters and not constant voltage sources. A 2.4v zener does NOT have exactly 2.4v across it. A 1.2 v supply will not be precisely 1.2v. Both will also vary with time and temperature. So, in practice there WILL be a dc component across the sensor - which will destroy it." +lang: "en" +isAdult: false +favouriteCount: 0 +score: 0 +lastActive: DateTime @1688761531 {#4029 : 2023-07-07 22:25:31.0 +02:00 } +ip: null +tags: null +mentions: [ "@macusking@discuss.tchncs.de" ] +children: Doctrine\ORM\PersistentCollection {#4018 …} +nested: Doctrine\ORM\PersistentCollection {#4016 …} +votes: Doctrine\ORM\PersistentCollection {#4014 …} +reports: Doctrine\ORM\PersistentCollection {#4012 …} +favourites: Doctrine\ORM\PersistentCollection {#3980 …} +notifications: Doctrine\ORM\PersistentCollection {#3984 …} -id: 8469 -bodyTs: "'1.2':28,35 '2.4':16,23 'across':25,54 'also':39 'assum':3 'compon':53 'constant':12 'dc':52 'destroy':59 'exact':22 'm':2 'meter':9 'practic':47 'precis':34 'sensor':56 'sourc':14 'suppli':30 'temperatur':44 'time':42 'v':6,17,24,29,36 'vari':40 'voltag':13 'zener':18" +ranking: 0 +commentCount: 0 +upVotes: 0 +downVotes: 0 +visibility: "visible " +apId: "https://discuss.tchncs.de/comment/661762" +editedAt: null +createdAt: DateTimeImmutable @1688586156 {#3965 : 2023-07-05 21:42:36.0 +02:00 } } +root: App\Entity\EntryComment {#4020} +body: "Thank you. Do you recommend me something (circuit) else? The 2.4v zener would provide about 2.4v. To keep 1.2V exactly half of the zener produced by the zener, I was considering split its voltage with 2 x 10k resistor in series and feed into an opamp in buffer configuration, so even it the 2.4 reference changes a little bit, the other side of circuit would be always zener / 2." +lang: "en" +isAdult: false +favouriteCount: 0 +score: 0 +lastActive: DateTime @1688587916 {#4043 : 2023-07-05 22:11:56.0 +02:00 } +ip: null +tags: null +mentions: [ "@macusking@discuss.tchncs.de" "@Susan_B_Good@discuss.tchncs.de" ] +children: Doctrine\ORM\PersistentCollection {#4051 …} +nested: Doctrine\ORM\PersistentCollection {#4053 …} +votes: Doctrine\ORM\PersistentCollection {#4055 …} +reports: Doctrine\ORM\PersistentCollection {#4036 …} +favourites: Doctrine\ORM\PersistentCollection {#4034 …} +notifications: Doctrine\ORM\PersistentCollection {#4032 …} -id: 8472 -bodyTs: "'1.2':21 '10k':41 '2':39,72 '2.4':11,17,57 'alway':70 'bit':62 'buffer':51 'chang':59 'circuit':8,67 'configur':52 'consid':34 'els':9 'even':54 'exact':23 'feed':46 'half':24 'keep':20 'littl':61 'opamp':49 'produc':28 'provid':15 'recommend':5 'refer':58 'resistor':42 'seri':44 'side':65 'someth':7 'split':35 'thank':1 'v':12,18,22 'voltag':37 'would':14,68 'x':40 'zener':13,27,31,71" +ranking: 0 +commentCount: 0 +upVotes: 0 +downVotes: 0 +visibility: "visible " +apId: "https://discuss.tchncs.de/comment/662713" +editedAt: DateTimeImmutable @1688588351 {#4040 : 2023-07-05 22:19:11.0 +02:00 } +createdAt: DateTimeImmutable @1688587916 {#4038 : 2023-07-05 22:11:56.0 +02:00 } } +root: App\Entity\EntryComment {#4020} +body: "How I would do it is to use two digital IO pins on the processor to generate the reference square wave. Put the sensor plus a series precision resistor between them and just pull one IO pin high as the other is pulled low and then swap them. That presumes that IO pins can both source and sink IO current. Then take the junction between the two to an Analogue in pin. You get two measurements each cycle. Use a lookup table of values and interpolate between them. If you wanted more precision - add more series resistors of different values covering the range of humidity that you want to sense, going to different IO pins. So you can choose the IO pin pair that brings the centre point between sensor and resistor closest to the mid-voltage point. It’s effectively a balanced half bridge arrangement - using the precision of the resistors to determine overall measurement precision. OK it ties up several IO pins - but microcontrollers are so cheap, I’d probably just dedicate one to this sensor and that’s all that it would do." +lang: "en" +isAdult: false +favouriteCount: 1 +score: 0 +lastActive: DateTime @1688622526 {#4098 : 2023-07-06 07:48:46.0 +02:00 } +ip: null +tags: null +mentions: [ "@macusking@discuss.tchncs.de" "@Susan_B_Good@discuss.tchncs.de" ] +children: Doctrine\ORM\PersistentCollection {#4095 …} +nested: Doctrine\ORM\PersistentCollection {#4092 …} +votes: Doctrine\ORM\PersistentCollection {#4089 …} +reports: Doctrine\ORM\PersistentCollection {#4104 …} +favourites: Doctrine\ORM\PersistentCollection {#4106 …} +notifications: Doctrine\ORM\PersistentCollection {#4108 …} -id: 8568 -bodyTs: "'add':94 'analogu':70 'arrang':147 'balanc':144 'bridg':146 'bring':125 'centr':127 'cheap':170 'choos':119 'closest':133 'cover':101 'current':60 'cycl':78 'd':172 'dedic':175 'determin':155 'differ':99,113 'digit':10 'effect':142 'generat':17 'get':74 'go':111 'half':145 'high':38 'humid':105 'interpol':86 'io':11,36,52,59,114,121,164 'junction':64 'lookup':81 'low':44 'measur':76,157 'microcontrol':167 'mid':137 'mid-voltag':136 'ok':159 'one':35,176 'overal':156 'pair':123 'pin':12,37,53,72,115,122,165 'plus':25 'point':128,139 'precis':28,93,150,158 'presum':50 'probabl':173 'processor':15 'pull':34,43 'put':22 'rang':103 'refer':19 'resistor':29,97,132,153 'sens':110 'sensor':24,130,179 'seri':27,96 'sever':163 'sink':58 'sourc':56 'squar':20 'swap':47 'tabl':82 'take':62 'tie':161 'two':9,67,75 'use':8,79,148 'valu':84,100 'voltag':138 'want':91,108 'wave':21 'would':3,186" +ranking: 0 +commentCount: 0 +upVotes: 0 +downVotes: 0 +visibility: "visible " +apId: "https://discuss.tchncs.de/comment/678173" +editedAt: null +createdAt: DateTimeImmutable @1688622526 {#4101 : 2023-07-06 07:48:46.0 +02:00 } } +formDest: "entry_comment" +showDownvote: true -cache: Symfony\Component\Cache\Adapter\TraceableTagAwareAdapter {#600 …} } |
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"Would-this-circuit-to-use-an-HR202-humidity-sensor-actually" +title: "Would this circuit to use an HR202 humidity sensor actually work?" +url: null +body: """ \n \n I wanna run a HR202 moisture sensor and an Arduino. Yes, I picked a HR202 to challenge myself to make it work. I already have some easier-to-use SHT40 in stock.\n \n This sensor can only run with AC 1.5Vpeak max. So, I’ve created this little circuit to provide AC, and I’ll only read it when the oscillator output is HIGH, so I can read it briefly at the same time with the help of Arduino’s ADC. Could this circuit work? Thank you. """ +type: "article" +lang: "en" +isOc: false +hasEmbed: false +commentCount: 4 +favouriteCount: 1 +score: 0 +isAdult: false +sticky: false +lastActive: DateTime @1688761530 {#2418 : 2023-07-07 22:25:30.0 +02:00 } +ip: null +adaAmount: 0 +tags: null +mentions: null +comments: Doctrine\ORM\PersistentCollection {#1688 …} +votes: Doctrine\ORM\PersistentCollection {#1966 …} +reports: Doctrine\ORM\PersistentCollection {#1965 …} +favourites: Doctrine\ORM\PersistentCollection {#1368 …} +notifications: Doctrine\ORM\PersistentCollection {#2426 …} +badges: Doctrine\ORM\PersistentCollection {#2439 …} +children: [] -id: 875 -titleTs: "'actual':10 'circuit':3 'hr202':7 'humid':8 'sensor':9 'use':5 'work':11 'would':1" -bodyTs: "'/pictrs/image/e2575314-be01-4a3f-bab2-cc75811b3ce8.png)':3 '1.5':44 'ac':43,56 'adc':85 'alreadi':27 'arduino':13,83 'briefli':74 'challeng':20 'circuit':53,88 'could':86 'creat':50 'discuss.tchncs.de':2 'discuss.tchncs.de/pictrs/image/e2575314-be01-4a3f-bab2-cc75811b3ce8.png)':1 'easier':31 'easier-to-us':30 'help':81 'high':68 'hr202':8,18 'littl':52 'll':59 'make':23 'max':46 'moistur':9 'oscil':65 'output':66 'pick':16 'provid':55 'read':61,72 'run':6,41 'sensor':10,38 'sht40':34 'stock':36 'thank':90 'time':78 'use':33 've':49 'vpeak':45 'wanna':5 'work':25,89 'yes':14" +cross: false +upVotes: 0 +downVotes: 0 +ranking: 1688598501 +visibility: "visible " +apId: "https://discuss.tchncs.de/post/505309" +editedAt: null +createdAt: DateTimeImmutable @1688582501 {#1858 : 2023-07-05 20:41:41.0 +02:00 } } +magazine: App\Entity\Magazine {#264} +image: null +parent: App\Entity\EntryComment {#4048 +user: Proxies\__CG__\App\Entity\User {#1978 …2} +entry: App\Entity\Entry {#2412} +magazine: App\Entity\Magazine {#264} +image: null +parent: App\Entity\EntryComment {#4020 +user: App\Entity\User {#3968} +entry: App\Entity\Entry {#2412} +magazine: App\Entity\Magazine {#264} +image: null +parent: null +root: null +body: "I’m assuming that those "v"s are meters and not constant voltage sources. A 2.4v zener does NOT have exactly 2.4v across it. A 1.2 v supply will not be precisely 1.2v. Both will also vary with time and temperature. So, in practice there WILL be a dc component across the sensor - which will destroy it." +lang: "en" +isAdult: false +favouriteCount: 0 +score: 0 +lastActive: DateTime @1688761531 {#4029 : 2023-07-07 22:25:31.0 +02:00 } +ip: null +tags: null +mentions: [ "@macusking@discuss.tchncs.de" ] +children: Doctrine\ORM\PersistentCollection {#4018 …} +nested: Doctrine\ORM\PersistentCollection {#4016 …} +votes: Doctrine\ORM\PersistentCollection {#4014 …} +reports: Doctrine\ORM\PersistentCollection {#4012 …} +favourites: Doctrine\ORM\PersistentCollection {#3980 …} +notifications: Doctrine\ORM\PersistentCollection {#3984 …} -id: 8469 -bodyTs: "'1.2':28,35 '2.4':16,23 'across':25,54 'also':39 'assum':3 'compon':53 'constant':12 'dc':52 'destroy':59 'exact':22 'm':2 'meter':9 'practic':47 'precis':34 'sensor':56 'sourc':14 'suppli':30 'temperatur':44 'time':42 'v':6,17,24,29,36 'vari':40 'voltag':13 'zener':18" +ranking: 0 +commentCount: 0 +upVotes: 0 +downVotes: 0 +visibility: "visible " +apId: "https://discuss.tchncs.de/comment/661762" +editedAt: null +createdAt: DateTimeImmutable @1688586156 {#3965 : 2023-07-05 21:42:36.0 +02:00 } } +root: App\Entity\EntryComment {#4020} +body: "Thank you. Do you recommend me something (circuit) else? The 2.4v zener would provide about 2.4v. To keep 1.2V exactly half of the zener produced by the zener, I was considering split its voltage with 2 x 10k resistor in series and feed into an opamp in buffer configuration, so even it the 2.4 reference changes a little bit, the other side of circuit would be always zener / 2." +lang: "en" +isAdult: false +favouriteCount: 0 +score: 0 +lastActive: DateTime @1688587916 {#4043 : 2023-07-05 22:11:56.0 +02:00 } +ip: null +tags: null +mentions: [ "@macusking@discuss.tchncs.de" "@Susan_B_Good@discuss.tchncs.de" ] +children: Doctrine\ORM\PersistentCollection {#4051 …} +nested: Doctrine\ORM\PersistentCollection {#4053 …} +votes: Doctrine\ORM\PersistentCollection {#4055 …} +reports: Doctrine\ORM\PersistentCollection {#4036 …} +favourites: Doctrine\ORM\PersistentCollection {#4034 …} +notifications: Doctrine\ORM\PersistentCollection {#4032 …} -id: 8472 -bodyTs: "'1.2':21 '10k':41 '2':39,72 '2.4':11,17,57 'alway':70 'bit':62 'buffer':51 'chang':59 'circuit':8,67 'configur':52 'consid':34 'els':9 'even':54 'exact':23 'feed':46 'half':24 'keep':20 'littl':61 'opamp':49 'produc':28 'provid':15 'recommend':5 'refer':58 'resistor':42 'seri':44 'side':65 'someth':7 'split':35 'thank':1 'v':12,18,22 'voltag':37 'would':14,68 'x':40 'zener':13,27,31,71" +ranking: 0 +commentCount: 0 +upVotes: 0 +downVotes: 0 +visibility: "visible " +apId: "https://discuss.tchncs.de/comment/662713" +editedAt: DateTimeImmutable @1688588351 {#4040 : 2023-07-05 22:19:11.0 +02:00 } +createdAt: DateTimeImmutable @1688587916 {#4038 : 2023-07-05 22:11:56.0 +02:00 } } +root: App\Entity\EntryComment {#4020} +body: "How I would do it is to use two digital IO pins on the processor to generate the reference square wave. Put the sensor plus a series precision resistor between them and just pull one IO pin high as the other is pulled low and then swap them. That presumes that IO pins can both source and sink IO current. Then take the junction between the two to an Analogue in pin. You get two measurements each cycle. Use a lookup table of values and interpolate between them. If you wanted more precision - add more series resistors of different values covering the range of humidity that you want to sense, going to different IO pins. So you can choose the IO pin pair that brings the centre point between sensor and resistor closest to the mid-voltage point. It’s effectively a balanced half bridge arrangement - using the precision of the resistors to determine overall measurement precision. OK it ties up several IO pins - but microcontrollers are so cheap, I’d probably just dedicate one to this sensor and that’s all that it would do." +lang: "en" +isAdult: false +favouriteCount: 1 +score: 0 +lastActive: DateTime @1688622526 {#4098 : 2023-07-06 07:48:46.0 +02:00 } +ip: null +tags: null +mentions: [ "@macusking@discuss.tchncs.de" "@Susan_B_Good@discuss.tchncs.de" ] +children: Doctrine\ORM\PersistentCollection {#4095 …} +nested: Doctrine\ORM\PersistentCollection {#4092 …} +votes: Doctrine\ORM\PersistentCollection {#4089 …} +reports: Doctrine\ORM\PersistentCollection {#4104 …} +favourites: Doctrine\ORM\PersistentCollection {#4106 …} +notifications: Doctrine\ORM\PersistentCollection {#4108 …} -id: 8568 -bodyTs: "'add':94 'analogu':70 'arrang':147 'balanc':144 'bridg':146 'bring':125 'centr':127 'cheap':170 'choos':119 'closest':133 'cover':101 'current':60 'cycl':78 'd':172 'dedic':175 'determin':155 'differ':99,113 'digit':10 'effect':142 'generat':17 'get':74 'go':111 'half':145 'high':38 'humid':105 'interpol':86 'io':11,36,52,59,114,121,164 'junction':64 'lookup':81 'low':44 'measur':76,157 'microcontrol':167 'mid':137 'mid-voltag':136 'ok':159 'one':35,176 'overal':156 'pair':123 'pin':12,37,53,72,115,122,165 'plus':25 'point':128,139 'precis':28,93,150,158 'presum':50 'probabl':173 'processor':15 'pull':34,43 'put':22 'rang':103 'refer':19 'resistor':29,97,132,153 'sens':110 'sensor':24,130,179 'seri':27,96 'sever':163 'sink':58 'sourc':56 'squar':20 'swap':47 'tabl':82 'take':62 'tie':161 'two':9,67,75 'use':8,79,148 'valu':84,100 'voltag':138 'want':91,108 'wave':21 'would':3,186" +ranking: 0 +commentCount: 0 +upVotes: 0 +downVotes: 0 +visibility: "visible " +apId: "https://discuss.tchncs.de/comment/678173" +editedAt: null +createdAt: DateTimeImmutable @1688622526 {#4101 : 2023-07-06 07:48:46.0 +02:00 } } ] |
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+slug: "Would-this-circuit-to-use-an-HR202-humidity-sensor-actually" +title: "Would this circuit to use an HR202 humidity sensor actually work?" +url: null +body: """ \n \n I wanna run a HR202 moisture sensor and an Arduino. Yes, I picked a HR202 to challenge myself to make it work. I already have some easier-to-use SHT40 in stock.\n \n This sensor can only run with AC 1.5Vpeak max. So, I’ve created this little circuit to provide AC, and I’ll only read it when the oscillator output is HIGH, so I can read it briefly at the same time with the help of Arduino’s ADC. Could this circuit work? Thank you. """ +type: "article" +lang: "en" +isOc: false +hasEmbed: false +commentCount: 4 +favouriteCount: 1 +score: 0 +isAdult: false +sticky: false +lastActive: DateTime @1688761530 {#2418 : 2023-07-07 22:25:30.0 +02:00 } +ip: null +adaAmount: 0 +tags: null +mentions: null +comments: Doctrine\ORM\PersistentCollection {#1688 …} +votes: Doctrine\ORM\PersistentCollection {#1966 …} +reports: Doctrine\ORM\PersistentCollection {#1965 …} +favourites: Doctrine\ORM\PersistentCollection {#1368 …} +notifications: Doctrine\ORM\PersistentCollection {#2426 …} +badges: Doctrine\ORM\PersistentCollection {#2439 …} +children: [] -id: 875 -titleTs: "'actual':10 'circuit':3 'hr202':7 'humid':8 'sensor':9 'use':5 'work':11 'would':1" -bodyTs: "'/pictrs/image/e2575314-be01-4a3f-bab2-cc75811b3ce8.png)':3 '1.5':44 'ac':43,56 'adc':85 'alreadi':27 'arduino':13,83 'briefli':74 'challeng':20 'circuit':53,88 'could':86 'creat':50 'discuss.tchncs.de':2 'discuss.tchncs.de/pictrs/image/e2575314-be01-4a3f-bab2-cc75811b3ce8.png)':1 'easier':31 'easier-to-us':30 'help':81 'high':68 'hr202':8,18 'littl':52 'll':59 'make':23 'max':46 'moistur':9 'oscil':65 'output':66 'pick':16 'provid':55 'read':61,72 'run':6,41 'sensor':10,38 'sht40':34 'stock':36 'thank':90 'time':78 'use':33 've':49 'vpeak':45 'wanna':5 'work':25,89 'yes':14" +cross: false +upVotes: 0 +downVotes: 0 +ranking: 1688598501 +visibility: "visible " +apId: "https://discuss.tchncs.de/post/505309" +editedAt: null +createdAt: DateTimeImmutable @1688582501 {#1858 : 2023-07-05 20:41:41.0 +02:00 } } +magazine: App\Entity\Magazine {#264} +image: null +parent: App\Entity\EntryComment {#4048 +user: Proxies\__CG__\App\Entity\User {#1978 …2} +entry: App\Entity\Entry {#2412} +magazine: App\Entity\Magazine {#264} +image: null +parent: App\Entity\EntryComment {#4020 +user: App\Entity\User {#3968} +entry: App\Entity\Entry {#2412} +magazine: App\Entity\Magazine {#264} +image: null +parent: null +root: null +body: "I’m assuming that those "v"s are meters and not constant voltage sources. A 2.4v zener does NOT have exactly 2.4v across it. A 1.2 v supply will not be precisely 1.2v. Both will also vary with time and temperature. So, in practice there WILL be a dc component across the sensor - which will destroy it." +lang: "en" +isAdult: false +favouriteCount: 0 +score: 0 +lastActive: DateTime @1688761531 {#4029 : 2023-07-07 22:25:31.0 +02:00 } +ip: null +tags: null +mentions: [ "@macusking@discuss.tchncs.de" ] +children: Doctrine\ORM\PersistentCollection {#4018 …} +nested: Doctrine\ORM\PersistentCollection {#4016 …} +votes: Doctrine\ORM\PersistentCollection {#4014 …} +reports: Doctrine\ORM\PersistentCollection {#4012 …} +favourites: Doctrine\ORM\PersistentCollection {#3980 …} +notifications: Doctrine\ORM\PersistentCollection {#3984 …} -id: 8469 -bodyTs: "'1.2':28,35 '2.4':16,23 'across':25,54 'also':39 'assum':3 'compon':53 'constant':12 'dc':52 'destroy':59 'exact':22 'm':2 'meter':9 'practic':47 'precis':34 'sensor':56 'sourc':14 'suppli':30 'temperatur':44 'time':42 'v':6,17,24,29,36 'vari':40 'voltag':13 'zener':18" +ranking: 0 +commentCount: 0 +upVotes: 0 +downVotes: 0 +visibility: "visible " +apId: "https://discuss.tchncs.de/comment/661762" +editedAt: null +createdAt: DateTimeImmutable @1688586156 {#3965 : 2023-07-05 21:42:36.0 +02:00 } } +root: App\Entity\EntryComment {#4020} +body: "Thank you. Do you recommend me something (circuit) else? The 2.4v zener would provide about 2.4v. To keep 1.2V exactly half of the zener produced by the zener, I was considering split its voltage with 2 x 10k resistor in series and feed into an opamp in buffer configuration, so even it the 2.4 reference changes a little bit, the other side of circuit would be always zener / 2." +lang: "en" +isAdult: false +favouriteCount: 0 +score: 0 +lastActive: DateTime @1688587916 {#4043 : 2023-07-05 22:11:56.0 +02:00 } +ip: null +tags: null +mentions: [ "@macusking@discuss.tchncs.de" "@Susan_B_Good@discuss.tchncs.de" ] +children: Doctrine\ORM\PersistentCollection {#4051 …} +nested: Doctrine\ORM\PersistentCollection {#4053 …} +votes: Doctrine\ORM\PersistentCollection {#4055 …} +reports: Doctrine\ORM\PersistentCollection {#4036 …} +favourites: Doctrine\ORM\PersistentCollection {#4034 …} +notifications: Doctrine\ORM\PersistentCollection {#4032 …} -id: 8472 -bodyTs: "'1.2':21 '10k':41 '2':39,72 '2.4':11,17,57 'alway':70 'bit':62 'buffer':51 'chang':59 'circuit':8,67 'configur':52 'consid':34 'els':9 'even':54 'exact':23 'feed':46 'half':24 'keep':20 'littl':61 'opamp':49 'produc':28 'provid':15 'recommend':5 'refer':58 'resistor':42 'seri':44 'side':65 'someth':7 'split':35 'thank':1 'v':12,18,22 'voltag':37 'would':14,68 'x':40 'zener':13,27,31,71" +ranking: 0 +commentCount: 0 +upVotes: 0 +downVotes: 0 +visibility: "visible " +apId: "https://discuss.tchncs.de/comment/662713" +editedAt: DateTimeImmutable @1688588351 {#4040 : 2023-07-05 22:19:11.0 +02:00 } +createdAt: DateTimeImmutable @1688587916 {#4038 : 2023-07-05 22:11:56.0 +02:00 } } +root: App\Entity\EntryComment {#4020} +body: "How I would do it is to use two digital IO pins on the processor to generate the reference square wave. Put the sensor plus a series precision resistor between them and just pull one IO pin high as the other is pulled low and then swap them. That presumes that IO pins can both source and sink IO current. Then take the junction between the two to an Analogue in pin. You get two measurements each cycle. Use a lookup table of values and interpolate between them. If you wanted more precision - add more series resistors of different values covering the range of humidity that you want to sense, going to different IO pins. So you can choose the IO pin pair that brings the centre point between sensor and resistor closest to the mid-voltage point. It’s effectively a balanced half bridge arrangement - using the precision of the resistors to determine overall measurement precision. OK it ties up several IO pins - but microcontrollers are so cheap, I’d probably just dedicate one to this sensor and that’s all that it would do." +lang: "en" +isAdult: false +favouriteCount: 1 +score: 0 +lastActive: DateTime @1688622526 {#4098 : 2023-07-06 07:48:46.0 +02:00 } +ip: null +tags: null +mentions: [ "@macusking@discuss.tchncs.de" "@Susan_B_Good@discuss.tchncs.de" ] +children: Doctrine\ORM\PersistentCollection {#4095 …} +nested: Doctrine\ORM\PersistentCollection {#4092 …} +votes: Doctrine\ORM\PersistentCollection {#4089 …} +reports: Doctrine\ORM\PersistentCollection {#4104 …} +favourites: Doctrine\ORM\PersistentCollection {#4106 …} +notifications: Doctrine\ORM\PersistentCollection {#4108 …} -id: 8568 -bodyTs: "'add':94 'analogu':70 'arrang':147 'balanc':144 'bridg':146 'bring':125 'centr':127 'cheap':170 'choos':119 'closest':133 'cover':101 'current':60 'cycl':78 'd':172 'dedic':175 'determin':155 'differ':99,113 'digit':10 'effect':142 'generat':17 'get':74 'go':111 'half':145 'high':38 'humid':105 'interpol':86 'io':11,36,52,59,114,121,164 'junction':64 'lookup':81 'low':44 'measur':76,157 'microcontrol':167 'mid':137 'mid-voltag':136 'ok':159 'one':35,176 'overal':156 'pair':123 'pin':12,37,53,72,115,122,165 'plus':25 'point':128,139 'precis':28,93,150,158 'presum':50 'probabl':173 'processor':15 'pull':34,43 'put':22 'rang':103 'refer':19 'resistor':29,97,132,153 'sens':110 'sensor':24,130,179 'seri':27,96 'sever':163 'sink':58 'sourc':56 'squar':20 'swap':47 'tabl':82 'take':62 'tie':161 'two':9,67,75 'use':8,79,148 'valu':84,100 'voltag':138 'want':91,108 'wave':21 'would':3,186" +ranking: 0 +commentCount: 0 +upVotes: 0 +downVotes: 0 +visibility: "visible " +apId: "https://discuss.tchncs.de/comment/678173" +editedAt: null +createdAt: DateTimeImmutable @1688622526 {#4101 : 2023-07-06 07:48:46.0 +02:00 } } -cache: Symfony\Component\Cache\Adapter\TraceableTagAwareAdapter {#600 …} } |
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"Would-this-circuit-to-use-an-HR202-humidity-sensor-actually" +title: "Would this circuit to use an HR202 humidity sensor actually work?" +url: null +body: """ \n \n I wanna run a HR202 moisture sensor and an Arduino. Yes, I picked a HR202 to challenge myself to make it work. I already have some easier-to-use SHT40 in stock.\n \n This sensor can only run with AC 1.5Vpeak max. So, I’ve created this little circuit to provide AC, and I’ll only read it when the oscillator output is HIGH, so I can read it briefly at the same time with the help of Arduino’s ADC. Could this circuit work? Thank you. """ +type: "article" +lang: "en" +isOc: false +hasEmbed: false +commentCount: 4 +favouriteCount: 1 +score: 0 +isAdult: false +sticky: false +lastActive: DateTime @1688761530 {#2418 : 2023-07-07 22:25:30.0 +02:00 } +ip: null +adaAmount: 0 +tags: null +mentions: null +comments: Doctrine\ORM\PersistentCollection {#1688 …} +votes: Doctrine\ORM\PersistentCollection {#1966 …} +reports: Doctrine\ORM\PersistentCollection {#1965 …} +favourites: Doctrine\ORM\PersistentCollection {#1368 …} +notifications: Doctrine\ORM\PersistentCollection {#2426 …} +badges: Doctrine\ORM\PersistentCollection {#2439 …} +children: [] -id: 875 -titleTs: "'actual':10 'circuit':3 'hr202':7 'humid':8 'sensor':9 'use':5 'work':11 'would':1" -bodyTs: "'/pictrs/image/e2575314-be01-4a3f-bab2-cc75811b3ce8.png)':3 '1.5':44 'ac':43,56 'adc':85 'alreadi':27 'arduino':13,83 'briefli':74 'challeng':20 'circuit':53,88 'could':86 'creat':50 'discuss.tchncs.de':2 'discuss.tchncs.de/pictrs/image/e2575314-be01-4a3f-bab2-cc75811b3ce8.png)':1 'easier':31 'easier-to-us':30 'help':81 'high':68 'hr202':8,18 'littl':52 'll':59 'make':23 'max':46 'moistur':9 'oscil':65 'output':66 'pick':16 'provid':55 'read':61,72 'run':6,41 'sensor':10,38 'sht40':34 'stock':36 'thank':90 'time':78 'use':33 've':49 'vpeak':45 'wanna':5 'work':25,89 'yes':14" +cross: false +upVotes: 0 +downVotes: 0 +ranking: 1688598501 +visibility: "visible " +apId: "https://discuss.tchncs.de/post/505309" +editedAt: null +createdAt: DateTimeImmutable @1688582501 {#1858 : 2023-07-05 20:41:41.0 +02:00 } } +magazine: App\Entity\Magazine {#264} +image: null +parent: App\Entity\EntryComment {#4048 +user: Proxies\__CG__\App\Entity\User {#1978 …2} +entry: App\Entity\Entry {#2412} +magazine: App\Entity\Magazine {#264} +image: null +parent: App\Entity\EntryComment {#4020 +user: App\Entity\User {#3968} +entry: App\Entity\Entry {#2412} +magazine: App\Entity\Magazine {#264} +image: null +parent: null +root: null +body: "I’m assuming that those "v"s are meters and not constant voltage sources. A 2.4v zener does NOT have exactly 2.4v across it. A 1.2 v supply will not be precisely 1.2v. Both will also vary with time and temperature. So, in practice there WILL be a dc component across the sensor - which will destroy it." +lang: "en" +isAdult: false +favouriteCount: 0 +score: 0 +lastActive: DateTime @1688761531 {#4029 : 2023-07-07 22:25:31.0 +02:00 } +ip: null +tags: null +mentions: [ "@macusking@discuss.tchncs.de" ] +children: Doctrine\ORM\PersistentCollection {#4018 …} +nested: Doctrine\ORM\PersistentCollection {#4016 …} +votes: Doctrine\ORM\PersistentCollection {#4014 …} +reports: Doctrine\ORM\PersistentCollection {#4012 …} +favourites: Doctrine\ORM\PersistentCollection {#3980 …} +notifications: Doctrine\ORM\PersistentCollection {#3984 …} -id: 8469 -bodyTs: "'1.2':28,35 '2.4':16,23 'across':25,54 'also':39 'assum':3 'compon':53 'constant':12 'dc':52 'destroy':59 'exact':22 'm':2 'meter':9 'practic':47 'precis':34 'sensor':56 'sourc':14 'suppli':30 'temperatur':44 'time':42 'v':6,17,24,29,36 'vari':40 'voltag':13 'zener':18" +ranking: 0 +commentCount: 0 +upVotes: 0 +downVotes: 0 +visibility: "visible " +apId: "https://discuss.tchncs.de/comment/661762" +editedAt: null +createdAt: DateTimeImmutable @1688586156 {#3965 : 2023-07-05 21:42:36.0 +02:00 } } +root: App\Entity\EntryComment {#4020} +body: "Thank you. Do you recommend me something (circuit) else? The 2.4v zener would provide about 2.4v. To keep 1.2V exactly half of the zener produced by the zener, I was considering split its voltage with 2 x 10k resistor in series and feed into an opamp in buffer configuration, so even it the 2.4 reference changes a little bit, the other side of circuit would be always zener / 2." +lang: "en" +isAdult: false +favouriteCount: 0 +score: 0 +lastActive: DateTime @1688587916 {#4043 : 2023-07-05 22:11:56.0 +02:00 } +ip: null +tags: null +mentions: [ "@macusking@discuss.tchncs.de" "@Susan_B_Good@discuss.tchncs.de" ] +children: Doctrine\ORM\PersistentCollection {#4051 …} +nested: Doctrine\ORM\PersistentCollection {#4053 …} +votes: Doctrine\ORM\PersistentCollection {#4055 …} +reports: Doctrine\ORM\PersistentCollection {#4036 …} +favourites: Doctrine\ORM\PersistentCollection {#4034 …} +notifications: Doctrine\ORM\PersistentCollection {#4032 …} -id: 8472 -bodyTs: "'1.2':21 '10k':41 '2':39,72 '2.4':11,17,57 'alway':70 'bit':62 'buffer':51 'chang':59 'circuit':8,67 'configur':52 'consid':34 'els':9 'even':54 'exact':23 'feed':46 'half':24 'keep':20 'littl':61 'opamp':49 'produc':28 'provid':15 'recommend':5 'refer':58 'resistor':42 'seri':44 'side':65 'someth':7 'split':35 'thank':1 'v':12,18,22 'voltag':37 'would':14,68 'x':40 'zener':13,27,31,71" +ranking: 0 +commentCount: 0 +upVotes: 0 +downVotes: 0 +visibility: "visible " +apId: "https://discuss.tchncs.de/comment/662713" +editedAt: DateTimeImmutable @1688588351 {#4040 : 2023-07-05 22:19:11.0 +02:00 } +createdAt: DateTimeImmutable @1688587916 {#4038 : 2023-07-05 22:11:56.0 +02:00 } } +root: App\Entity\EntryComment {#4020} +body: "How I would do it is to use two digital IO pins on the processor to generate the reference square wave. Put the sensor plus a series precision resistor between them and just pull one IO pin high as the other is pulled low and then swap them. That presumes that IO pins can both source and sink IO current. Then take the junction between the two to an Analogue in pin. You get two measurements each cycle. Use a lookup table of values and interpolate between them. If you wanted more precision - add more series resistors of different values covering the range of humidity that you want to sense, going to different IO pins. So you can choose the IO pin pair that brings the centre point between sensor and resistor closest to the mid-voltage point. It’s effectively a balanced half bridge arrangement - using the precision of the resistors to determine overall measurement precision. OK it ties up several IO pins - but microcontrollers are so cheap, I’d probably just dedicate one to this sensor and that’s all that it would do." +lang: "en" +isAdult: false +favouriteCount: 1 +score: 0 +lastActive: DateTime @1688622526 {#4098 : 2023-07-06 07:48:46.0 +02:00 } +ip: null +tags: null +mentions: [ "@macusking@discuss.tchncs.de" "@Susan_B_Good@discuss.tchncs.de" ] +children: Doctrine\ORM\PersistentCollection {#4095 …} +nested: Doctrine\ORM\PersistentCollection {#4092 …} +votes: Doctrine\ORM\PersistentCollection {#4089 …} +reports: Doctrine\ORM\PersistentCollection {#4104 …} +favourites: Doctrine\ORM\PersistentCollection {#4106 …} +notifications: Doctrine\ORM\PersistentCollection {#4108 …} -id: 8568 -bodyTs: "'add':94 'analogu':70 'arrang':147 'balanc':144 'bridg':146 'bring':125 'centr':127 'cheap':170 'choos':119 'closest':133 'cover':101 'current':60 'cycl':78 'd':172 'dedic':175 'determin':155 'differ':99,113 'digit':10 'effect':142 'generat':17 'get':74 'go':111 'half':145 'high':38 'humid':105 'interpol':86 'io':11,36,52,59,114,121,164 'junction':64 'lookup':81 'low':44 'measur':76,157 'microcontrol':167 'mid':137 'mid-voltag':136 'ok':159 'one':35,176 'overal':156 'pair':123 'pin':12,37,53,72,115,122,165 'plus':25 'point':128,139 'precis':28,93,150,158 'presum':50 'probabl':173 'processor':15 'pull':34,43 'put':22 'rang':103 'refer':19 'resistor':29,97,132,153 'sens':110 'sensor':24,130,179 'seri':27,96 'sever':163 'sink':58 'sourc':56 'squar':20 'swap':47 'tabl':82 'take':62 'tie':161 'two':9,67,75 'use':8,79,148 'valu':84,100 'voltag':138 'want':91,108 'wave':21 'would':3,186" +ranking: 0 +commentCount: 0 +upVotes: 0 +downVotes: 0 +visibility: "visible " +apId: "https://discuss.tchncs.de/comment/678173" +editedAt: null +createdAt: DateTimeImmutable @1688622526 {#4101 : 2023-07-06 07:48:46.0 +02:00 } } "level" => 3 "showNested" => true "view" => "tree" ] |
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+slug: "Would-this-circuit-to-use-an-HR202-humidity-sensor-actually" +title: "Would this circuit to use an HR202 humidity sensor actually work?" +url: null +body: """ \n \n I wanna run a HR202 moisture sensor and an Arduino. Yes, I picked a HR202 to challenge myself to make it work. I already have some easier-to-use SHT40 in stock.\n \n This sensor can only run with AC 1.5Vpeak max. So, I’ve created this little circuit to provide AC, and I’ll only read it when the oscillator output is HIGH, so I can read it briefly at the same time with the help of Arduino’s ADC. Could this circuit work? Thank you. """ +type: "article" +lang: "en" +isOc: false +hasEmbed: false +commentCount: 4 +favouriteCount: 1 +score: 0 +isAdult: false +sticky: false +lastActive: DateTime @1688761530 {#2418 : 2023-07-07 22:25:30.0 +02:00 } +ip: null +adaAmount: 0 +tags: null +mentions: null +comments: Doctrine\ORM\PersistentCollection {#1688 …} +votes: Doctrine\ORM\PersistentCollection {#1966 …} +reports: Doctrine\ORM\PersistentCollection {#1965 …} +favourites: Doctrine\ORM\PersistentCollection {#1368 …} +notifications: Doctrine\ORM\PersistentCollection {#2426 …} +badges: Doctrine\ORM\PersistentCollection {#2439 …} +children: [] -id: 875 -titleTs: "'actual':10 'circuit':3 'hr202':7 'humid':8 'sensor':9 'use':5 'work':11 'would':1" -bodyTs: "'/pictrs/image/e2575314-be01-4a3f-bab2-cc75811b3ce8.png)':3 '1.5':44 'ac':43,56 'adc':85 'alreadi':27 'arduino':13,83 'briefli':74 'challeng':20 'circuit':53,88 'could':86 'creat':50 'discuss.tchncs.de':2 'discuss.tchncs.de/pictrs/image/e2575314-be01-4a3f-bab2-cc75811b3ce8.png)':1 'easier':31 'easier-to-us':30 'help':81 'high':68 'hr202':8,18 'littl':52 'll':59 'make':23 'max':46 'moistur':9 'oscil':65 'output':66 'pick':16 'provid':55 'read':61,72 'run':6,41 'sensor':10,38 'sht40':34 'stock':36 'thank':90 'time':78 'use':33 've':49 'vpeak':45 'wanna':5 'work':25,89 'yes':14" +cross: false +upVotes: 0 +downVotes: 0 +ranking: 1688598501 +visibility: "visible " +apId: "https://discuss.tchncs.de/post/505309" +editedAt: null +createdAt: DateTimeImmutable @1688582501 {#1858 : 2023-07-05 20:41:41.0 +02:00 } } +magazine: App\Entity\Magazine {#264} +image: null +parent: App\Entity\EntryComment {#4048 +user: Proxies\__CG__\App\Entity\User {#1978 …2} +entry: App\Entity\Entry {#2412} +magazine: App\Entity\Magazine {#264} +image: null +parent: App\Entity\EntryComment {#4020 +user: App\Entity\User {#3968} +entry: App\Entity\Entry {#2412} +magazine: App\Entity\Magazine {#264} +image: null +parent: null +root: null +body: "I’m assuming that those "v"s are meters and not constant voltage sources. A 2.4v zener does NOT have exactly 2.4v across it. A 1.2 v supply will not be precisely 1.2v. Both will also vary with time and temperature. So, in practice there WILL be a dc component across the sensor - which will destroy it." +lang: "en" +isAdult: false +favouriteCount: 0 +score: 0 +lastActive: DateTime @1688761531 {#4029 : 2023-07-07 22:25:31.0 +02:00 } +ip: null +tags: null +mentions: [ "@macusking@discuss.tchncs.de" ] +children: Doctrine\ORM\PersistentCollection {#4018 …} +nested: Doctrine\ORM\PersistentCollection {#4016 …} +votes: Doctrine\ORM\PersistentCollection {#4014 …} +reports: Doctrine\ORM\PersistentCollection {#4012 …} +favourites: Doctrine\ORM\PersistentCollection {#3980 …} +notifications: Doctrine\ORM\PersistentCollection {#3984 …} -id: 8469 -bodyTs: "'1.2':28,35 '2.4':16,23 'across':25,54 'also':39 'assum':3 'compon':53 'constant':12 'dc':52 'destroy':59 'exact':22 'm':2 'meter':9 'practic':47 'precis':34 'sensor':56 'sourc':14 'suppli':30 'temperatur':44 'time':42 'v':6,17,24,29,36 'vari':40 'voltag':13 'zener':18" +ranking: 0 +commentCount: 0 +upVotes: 0 +downVotes: 0 +visibility: "visible " +apId: "https://discuss.tchncs.de/comment/661762" +editedAt: null +createdAt: DateTimeImmutable @1688586156 {#3965 : 2023-07-05 21:42:36.0 +02:00 } } +root: App\Entity\EntryComment {#4020} +body: "Thank you. Do you recommend me something (circuit) else? The 2.4v zener would provide about 2.4v. To keep 1.2V exactly half of the zener produced by the zener, I was considering split its voltage with 2 x 10k resistor in series and feed into an opamp in buffer configuration, so even it the 2.4 reference changes a little bit, the other side of circuit would be always zener / 2." +lang: "en" +isAdult: false +favouriteCount: 0 +score: 0 +lastActive: DateTime @1688587916 {#4043 : 2023-07-05 22:11:56.0 +02:00 } +ip: null +tags: null +mentions: [ "@macusking@discuss.tchncs.de" "@Susan_B_Good@discuss.tchncs.de" ] +children: Doctrine\ORM\PersistentCollection {#4051 …} +nested: Doctrine\ORM\PersistentCollection {#4053 …} +votes: Doctrine\ORM\PersistentCollection {#4055 …} +reports: Doctrine\ORM\PersistentCollection {#4036 …} +favourites: Doctrine\ORM\PersistentCollection {#4034 …} +notifications: Doctrine\ORM\PersistentCollection {#4032 …} -id: 8472 -bodyTs: "'1.2':21 '10k':41 '2':39,72 '2.4':11,17,57 'alway':70 'bit':62 'buffer':51 'chang':59 'circuit':8,67 'configur':52 'consid':34 'els':9 'even':54 'exact':23 'feed':46 'half':24 'keep':20 'littl':61 'opamp':49 'produc':28 'provid':15 'recommend':5 'refer':58 'resistor':42 'seri':44 'side':65 'someth':7 'split':35 'thank':1 'v':12,18,22 'voltag':37 'would':14,68 'x':40 'zener':13,27,31,71" +ranking: 0 +commentCount: 0 +upVotes: 0 +downVotes: 0 +visibility: "visible " +apId: "https://discuss.tchncs.de/comment/662713" +editedAt: DateTimeImmutable @1688588351 {#4040 : 2023-07-05 22:19:11.0 +02:00 } +createdAt: DateTimeImmutable @1688587916 {#4038 : 2023-07-05 22:11:56.0 +02:00 } } +root: App\Entity\EntryComment {#4020} +body: "How I would do it is to use two digital IO pins on the processor to generate the reference square wave. Put the sensor plus a series precision resistor between them and just pull one IO pin high as the other is pulled low and then swap them. That presumes that IO pins can both source and sink IO current. Then take the junction between the two to an Analogue in pin. You get two measurements each cycle. Use a lookup table of values and interpolate between them. If you wanted more precision - add more series resistors of different values covering the range of humidity that you want to sense, going to different IO pins. So you can choose the IO pin pair that brings the centre point between sensor and resistor closest to the mid-voltage point. It’s effectively a balanced half bridge arrangement - using the precision of the resistors to determine overall measurement precision. OK it ties up several IO pins - but microcontrollers are so cheap, I’d probably just dedicate one to this sensor and that’s all that it would do." +lang: "en" +isAdult: false +favouriteCount: 1 +score: 0 +lastActive: DateTime @1688622526 {#4098 : 2023-07-06 07:48:46.0 +02:00 } +ip: null +tags: null +mentions: [ "@macusking@discuss.tchncs.de" "@Susan_B_Good@discuss.tchncs.de" ] +children: Doctrine\ORM\PersistentCollection {#4095 …} +nested: Doctrine\ORM\PersistentCollection {#4092 …} +votes: Doctrine\ORM\PersistentCollection {#4089 …} +reports: Doctrine\ORM\PersistentCollection {#4104 …} +favourites: Doctrine\ORM\PersistentCollection {#4106 …} +notifications: Doctrine\ORM\PersistentCollection {#4108 …} -id: 8568 -bodyTs: "'add':94 'analogu':70 'arrang':147 'balanc':144 'bridg':146 'bring':125 'centr':127 'cheap':170 'choos':119 'closest':133 'cover':101 'current':60 'cycl':78 'd':172 'dedic':175 'determin':155 'differ':99,113 'digit':10 'effect':142 'generat':17 'get':74 'go':111 'half':145 'high':38 'humid':105 'interpol':86 'io':11,36,52,59,114,121,164 'junction':64 'lookup':81 'low':44 'measur':76,157 'microcontrol':167 'mid':137 'mid-voltag':136 'ok':159 'one':35,176 'overal':156 'pair':123 'pin':12,37,53,72,115,122,165 'plus':25 'point':128,139 'precis':28,93,150,158 'presum':50 'probabl':173 'processor':15 'pull':34,43 'put':22 'rang':103 'refer':19 'resistor':29,97,132,153 'sens':110 'sensor':24,130,179 'seri':27,96 'sever':163 'sink':58 'sourc':56 'squar':20 'swap':47 'tabl':82 'take':62 'tie':161 'two':9,67,75 'use':8,79,148 'valu':84,100 'voltag':138 'want':91,108 'wave':21 'would':3,186" +ranking: 0 +commentCount: 0 +upVotes: 0 +downVotes: 0 +visibility: "visible " +apId: "https://discuss.tchncs.de/comment/678173" +editedAt: null +createdAt: DateTimeImmutable @1688622526 {#4101 : 2023-07-06 07:48:46.0 +02:00 } } +nestedComments: [] +level: 3 +view: "tree" -entryCommentRepository: App\Repository\EntryCommentRepository {#555 …} -twig: Twig\Environment {#1252 …} -security: Symfony\Bundle\SecurityBundle\Security {#1101 …} -cache: Symfony\Component\Cache\Adapter\TraceableTagAwareAdapter {#600 …} -requestStack: Symfony\Component\HttpFoundation\RequestStack {#1328 …} } |
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Yes, I picked a HR202 to challenge myself to make it work. I already have some easier-to-use SHT40 in stock.\n \n This sensor can only run with AC 1.5Vpeak max. So, I’ve created this little circuit to provide AC, and I’ll only read it when the oscillator output is HIGH, so I can read it briefly at the same time with the help of Arduino’s ADC. Could this circuit work? Thank you. """ +type: "article" +lang: "en" +isOc: false +hasEmbed: false +commentCount: 4 +favouriteCount: 1 +score: 0 +isAdult: false +sticky: false +lastActive: DateTime @1688761530 {#2418 : 2023-07-07 22:25:30.0 +02:00 } +ip: null +adaAmount: 0 +tags: null +mentions: null +comments: Doctrine\ORM\PersistentCollection {#1688 …} +votes: Doctrine\ORM\PersistentCollection {#1966 …} +reports: Doctrine\ORM\PersistentCollection {#1965 …} +favourites: Doctrine\ORM\PersistentCollection {#1368 …} +notifications: Doctrine\ORM\PersistentCollection {#2426 …} +badges: Doctrine\ORM\PersistentCollection {#2439 …} +children: [] -id: 875 -titleTs: "'actual':10 'circuit':3 'hr202':7 'humid':8 'sensor':9 'use':5 'work':11 'would':1" -bodyTs: "'/pictrs/image/e2575314-be01-4a3f-bab2-cc75811b3ce8.png)':3 '1.5':44 'ac':43,56 'adc':85 'alreadi':27 'arduino':13,83 'briefli':74 'challeng':20 'circuit':53,88 'could':86 'creat':50 'discuss.tchncs.de':2 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+createdAt: DateTimeImmutable @1687249795 {#4022 : 2023-06-20 10:29:55.0 +02:00 } } +entry: App\Entity\Entry {#2412} +magazine: App\Entity\Magazine {#264} +image: null +parent: App\Entity\EntryComment {#4048 +user: Proxies\__CG__\App\Entity\User {#1978 …2} +entry: App\Entity\Entry {#2412} +magazine: App\Entity\Magazine {#264} +image: null +parent: App\Entity\EntryComment {#4020 +user: App\Entity\User {#3968} +entry: App\Entity\Entry {#2412} +magazine: App\Entity\Magazine {#264} +image: null +parent: null +root: null +body: "I’m assuming that those "v"s are meters and not constant voltage sources. A 2.4v zener does NOT have exactly 2.4v across it. A 1.2 v supply will not be precisely 1.2v. Both will also vary with time and temperature. So, in practice there WILL be a dc component across the sensor - which will destroy it." +lang: "en" +isAdult: false +favouriteCount: 0 +score: 0 +lastActive: DateTime @1688761531 {#4029 : 2023-07-07 22:25:31.0 +02:00 } +ip: null +tags: null +mentions: [ "@macusking@discuss.tchncs.de" ] +children: Doctrine\ORM\PersistentCollection {#4018 …} +nested: Doctrine\ORM\PersistentCollection {#4016 …} +votes: Doctrine\ORM\PersistentCollection {#4014 …} +reports: Doctrine\ORM\PersistentCollection {#4012 …} +favourites: Doctrine\ORM\PersistentCollection {#3980 …} +notifications: Doctrine\ORM\PersistentCollection {#3984 …} -id: 8469 -bodyTs: "'1.2':28,35 '2.4':16,23 'across':25,54 'also':39 'assum':3 'compon':53 'constant':12 'dc':52 'destroy':59 'exact':22 'm':2 'meter':9 'practic':47 'precis':34 'sensor':56 'sourc':14 'suppli':30 'temperatur':44 'time':42 'v':6,17,24,29,36 'vari':40 'voltag':13 'zener':18" +ranking: 0 +commentCount: 0 +upVotes: 0 +downVotes: 0 +visibility: "visible " +apId: "https://discuss.tchncs.de/comment/661762" +editedAt: null +createdAt: DateTimeImmutable @1688586156 {#3965 : 2023-07-05 21:42:36.0 +02:00 } } +root: App\Entity\EntryComment {#4020} +body: "Thank you. Do you recommend me something (circuit) else? The 2.4v zener would provide about 2.4v. To keep 1.2V exactly half of the zener produced by the zener, I was considering split its voltage with 2 x 10k resistor in series and feed into an opamp in buffer configuration, so even it the 2.4 reference changes a little bit, the other side of circuit would be always zener / 2." +lang: "en" +isAdult: false +favouriteCount: 0 +score: 0 +lastActive: DateTime @1688587916 {#4043 : 2023-07-05 22:11:56.0 +02:00 } +ip: null +tags: null +mentions: [ "@macusking@discuss.tchncs.de" "@Susan_B_Good@discuss.tchncs.de" ] +children: Doctrine\ORM\PersistentCollection {#4051 …} +nested: Doctrine\ORM\PersistentCollection {#4053 …} +votes: Doctrine\ORM\PersistentCollection {#4055 …} +reports: Doctrine\ORM\PersistentCollection {#4036 …} +favourites: Doctrine\ORM\PersistentCollection {#4034 …} +notifications: Doctrine\ORM\PersistentCollection {#4032 …} -id: 8472 -bodyTs: "'1.2':21 '10k':41 '2':39,72 '2.4':11,17,57 'alway':70 'bit':62 'buffer':51 'chang':59 'circuit':8,67 'configur':52 'consid':34 'els':9 'even':54 'exact':23 'feed':46 'half':24 'keep':20 'littl':61 'opamp':49 'produc':28 'provid':15 'recommend':5 'refer':58 'resistor':42 'seri':44 'side':65 'someth':7 'split':35 'thank':1 'v':12,18,22 'voltag':37 'would':14,68 'x':40 'zener':13,27,31,71" +ranking: 0 +commentCount: 0 +upVotes: 0 +downVotes: 0 +visibility: "visible " +apId: "https://discuss.tchncs.de/comment/662713" +editedAt: DateTimeImmutable @1688588351 {#4040 : 2023-07-05 22:19:11.0 +02:00 } +createdAt: DateTimeImmutable @1688587916 {#4038 : 2023-07-05 22:11:56.0 +02:00 } } +root: App\Entity\EntryComment {#4020} +body: "How I would do it is to use two digital IO pins on the processor to generate the reference square wave. Put the sensor plus a series precision resistor between them and just pull one IO pin high as the other is pulled low and then swap them. That presumes that IO pins can both source and sink IO current. Then take the junction between the two to an Analogue in pin. You get two measurements each cycle. Use a lookup table of values and interpolate between them. If you wanted more precision - add more series resistors of different values covering the range of humidity that you want to sense, going to different IO pins. So you can choose the IO pin pair that brings the centre point between sensor and resistor closest to the mid-voltage point. It’s effectively a balanced half bridge arrangement - using the precision of the resistors to determine overall measurement precision. OK it ties up several IO pins - but microcontrollers are so cheap, I’d probably just dedicate one to this sensor and that’s all that it would do." +lang: "en" +isAdult: false +favouriteCount: 1 +score: 0 +lastActive: DateTime @1688622526 {#4098 : 2023-07-06 07:48:46.0 +02:00 } +ip: null +tags: null +mentions: [ "@macusking@discuss.tchncs.de" "@Susan_B_Good@discuss.tchncs.de" ] +children: Doctrine\ORM\PersistentCollection {#4095 …} +nested: Doctrine\ORM\PersistentCollection {#4092 …} +votes: Doctrine\ORM\PersistentCollection {#4089 …} +reports: Doctrine\ORM\PersistentCollection {#4104 …} +favourites: Doctrine\ORM\PersistentCollection {#4106 …} +notifications: Doctrine\ORM\PersistentCollection {#4108 …} -id: 8568 -bodyTs: "'add':94 'analogu':70 'arrang':147 'balanc':144 'bridg':146 'bring':125 'centr':127 'cheap':170 'choos':119 'closest':133 'cover':101 'current':60 'cycl':78 'd':172 'dedic':175 'determin':155 'differ':99,113 'digit':10 'effect':142 'generat':17 'get':74 'go':111 'half':145 'high':38 'humid':105 'interpol':86 'io':11,36,52,59,114,121,164 'junction':64 'lookup':81 'low':44 'measur':76,157 'microcontrol':167 'mid':137 'mid-voltag':136 'ok':159 'one':35,176 'overal':156 'pair':123 'pin':12,37,53,72,115,122,165 'plus':25 'point':128,139 'precis':28,93,150,158 'presum':50 'probabl':173 'processor':15 'pull':34,43 'put':22 'rang':103 'refer':19 'resistor':29,97,132,153 'sens':110 'sensor':24,130,179 'seri':27,96 'sever':163 'sink':58 'sourc':56 'squar':20 'swap':47 'tabl':82 'take':62 'tie':161 'two':9,67,75 'use':8,79,148 'valu':84,100 'voltag':138 'want':91,108 'wave':21 'would':3,186" +ranking: 0 +commentCount: 0 +upVotes: 0 +downVotes: 0 +visibility: "visible " +apId: "https://discuss.tchncs.de/comment/678173" +editedAt: null +createdAt: DateTimeImmutable @1688622526 {#4101 : 2023-07-06 07:48:46.0 +02:00 } } +root: App\Entity\EntryComment {#4020} +body: "Thank you. I’ll try this approach!" +lang: "en" +isAdult: false +favouriteCount: 0 +score: 0 +lastActive: DateTime @1688761530 {#4120 : 2023-07-07 22:25:30.0 +02:00 } +ip: null +tags: null +mentions: [ "@macusking@discuss.tchncs.de" "@Susan_B_Good@discuss.tchncs.de" ] +children: Doctrine\ORM\PersistentCollection {#4117 …} +nested: Doctrine\ORM\PersistentCollection {#4114 …} +votes: Doctrine\ORM\PersistentCollection {#4112 …} +reports: Doctrine\ORM\PersistentCollection {#4126 …} +favourites: Doctrine\ORM\PersistentCollection {#4128 …} +notifications: Doctrine\ORM\PersistentCollection {#4130 …} -id: 9042 -bodyTs: "'approach':7 'll':4 'thank':1 'tri':5" +ranking: 0 +commentCount: 0 +upVotes: 0 +downVotes: 0 +visibility: "visible " +apId: "https://discuss.tchncs.de/comment/749520" +editedAt: null +createdAt: DateTimeImmutable @1688761530 {#4123 : 2023-07-07 22:25:30.0 +02:00 } } "showNested" => true "level" => 4 "showEntryTitle" => false "showMagazineName" => false ] |
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valuations.\n \n 4: Be safe.\n \n --- """ +rules: null +subscriptionsCount: 1 +entryCount: 154 +entryCommentCount: 1230 +postCount: 1 +postCommentCount: 4 +isAdult: false +customCss: null +lastActive: DateTime @1729413608 {#274 : 2024-10-20 10:40:08.0 +02:00 } +markedForDeletionAt: null +tags: null +moderators: Doctrine\ORM\PersistentCollection {#236 …} +ownershipRequests: Doctrine\ORM\PersistentCollection {#232 …} +moderatorRequests: Doctrine\ORM\PersistentCollection {#221 …} +entries: Doctrine\ORM\PersistentCollection {#179 …} +posts: Doctrine\ORM\PersistentCollection {#137 …} +subscriptions: Doctrine\ORM\PersistentCollection {#199 …} +bans: Doctrine\ORM\PersistentCollection {#116 …} +reports: Doctrine\ORM\PersistentCollection {#102 …} +badges: Doctrine\ORM\PersistentCollection {#80 …} +logs: Doctrine\ORM\PersistentCollection {#70 …} +awards: Doctrine\ORM\PersistentCollection {#1360 …} +categories: Doctrine\ORM\PersistentCollection {#1792 …} -id: 11 +apId: 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Yes, I picked a HR202 to challenge myself to make it work. I already have some easier-to-use SHT40 in stock.\n \n This sensor can only run with AC 1.5Vpeak max. So, I’ve created this little circuit to provide AC, and I’ll only read it when the oscillator output is HIGH, so I can read it briefly at the same time with the help of Arduino’s ADC. Could this circuit work? Thank you. """ +type: "article" +lang: "en" +isOc: false +hasEmbed: false +commentCount: 4 +favouriteCount: 1 +score: 0 +isAdult: false +sticky: false +lastActive: DateTime @1688761530 {#2418 : 2023-07-07 22:25:30.0 +02:00 } +ip: null +adaAmount: 0 +tags: null +mentions: null +comments: Doctrine\ORM\PersistentCollection {#1688 …} +votes: Doctrine\ORM\PersistentCollection {#1966 …} +reports: Doctrine\ORM\PersistentCollection {#1965 …} +favourites: Doctrine\ORM\PersistentCollection {#1368 …} +notifications: Doctrine\ORM\PersistentCollection {#2426 …} +badges: Doctrine\ORM\PersistentCollection {#2439 …} +children: [] -id: 875 -titleTs: "'actual':10 'circuit':3 'hr202':7 'humid':8 'sensor':9 'use':5 'work':11 'would':1" -bodyTs: "'/pictrs/image/e2575314-be01-4a3f-bab2-cc75811b3ce8.png)':3 '1.5':44 'ac':43,56 'adc':85 'alreadi':27 'arduino':13,83 'briefli':74 'challeng':20 'circuit':53,88 'could':86 'creat':50 'discuss.tchncs.de':2 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+createdAt: DateTimeImmutable @1687249795 {#4022 : 2023-06-20 10:29:55.0 +02:00 } } +entry: App\Entity\Entry {#2412} +magazine: App\Entity\Magazine {#264} +image: null +parent: App\Entity\EntryComment {#4048 +user: Proxies\__CG__\App\Entity\User {#1978 …2} +entry: App\Entity\Entry {#2412} +magazine: App\Entity\Magazine {#264} +image: null +parent: App\Entity\EntryComment {#4020 +user: App\Entity\User {#3968} +entry: App\Entity\Entry {#2412} +magazine: App\Entity\Magazine {#264} +image: null +parent: null +root: null +body: "I’m assuming that those "v"s are meters and not constant voltage sources. A 2.4v zener does NOT have exactly 2.4v across it. A 1.2 v supply will not be precisely 1.2v. Both will also vary with time and temperature. So, in practice there WILL be a dc component across the sensor - which will destroy it." +lang: "en" +isAdult: false +favouriteCount: 0 +score: 0 +lastActive: DateTime @1688761531 {#4029 : 2023-07-07 22:25:31.0 +02:00 } +ip: null +tags: null +mentions: [ "@macusking@discuss.tchncs.de" ] +children: Doctrine\ORM\PersistentCollection {#4018 …} +nested: Doctrine\ORM\PersistentCollection {#4016 …} +votes: Doctrine\ORM\PersistentCollection {#4014 …} +reports: Doctrine\ORM\PersistentCollection {#4012 …} +favourites: Doctrine\ORM\PersistentCollection {#3980 …} +notifications: Doctrine\ORM\PersistentCollection {#3984 …} -id: 8469 -bodyTs: "'1.2':28,35 '2.4':16,23 'across':25,54 'also':39 'assum':3 'compon':53 'constant':12 'dc':52 'destroy':59 'exact':22 'm':2 'meter':9 'practic':47 'precis':34 'sensor':56 'sourc':14 'suppli':30 'temperatur':44 'time':42 'v':6,17,24,29,36 'vari':40 'voltag':13 'zener':18" +ranking: 0 +commentCount: 0 +upVotes: 0 +downVotes: 0 +visibility: "visible " +apId: "https://discuss.tchncs.de/comment/661762" +editedAt: null +createdAt: DateTimeImmutable @1688586156 {#3965 : 2023-07-05 21:42:36.0 +02:00 } } +root: App\Entity\EntryComment {#4020} +body: "Thank you. Do you recommend me something (circuit) else? The 2.4v zener would provide about 2.4v. To keep 1.2V exactly half of the zener produced by the zener, I was considering split its voltage with 2 x 10k resistor in series and feed into an opamp in buffer configuration, so even it the 2.4 reference changes a little bit, the other side of circuit would be always zener / 2." +lang: "en" +isAdult: false +favouriteCount: 0 +score: 0 +lastActive: DateTime @1688587916 {#4043 : 2023-07-05 22:11:56.0 +02:00 } +ip: null +tags: null +mentions: [ "@macusking@discuss.tchncs.de" "@Susan_B_Good@discuss.tchncs.de" ] +children: Doctrine\ORM\PersistentCollection {#4051 …} +nested: Doctrine\ORM\PersistentCollection {#4053 …} +votes: Doctrine\ORM\PersistentCollection {#4055 …} +reports: Doctrine\ORM\PersistentCollection {#4036 …} +favourites: Doctrine\ORM\PersistentCollection {#4034 …} +notifications: Doctrine\ORM\PersistentCollection {#4032 …} -id: 8472 -bodyTs: "'1.2':21 '10k':41 '2':39,72 '2.4':11,17,57 'alway':70 'bit':62 'buffer':51 'chang':59 'circuit':8,67 'configur':52 'consid':34 'els':9 'even':54 'exact':23 'feed':46 'half':24 'keep':20 'littl':61 'opamp':49 'produc':28 'provid':15 'recommend':5 'refer':58 'resistor':42 'seri':44 'side':65 'someth':7 'split':35 'thank':1 'v':12,18,22 'voltag':37 'would':14,68 'x':40 'zener':13,27,31,71" +ranking: 0 +commentCount: 0 +upVotes: 0 +downVotes: 0 +visibility: "visible " +apId: "https://discuss.tchncs.de/comment/662713" +editedAt: DateTimeImmutable @1688588351 {#4040 : 2023-07-05 22:19:11.0 +02:00 } +createdAt: DateTimeImmutable @1688587916 {#4038 : 2023-07-05 22:11:56.0 +02:00 } } +root: App\Entity\EntryComment {#4020} +body: "How I would do it is to use two digital IO pins on the processor to generate the reference square wave. Put the sensor plus a series precision resistor between them and just pull one IO pin high as the other is pulled low and then swap them. That presumes that IO pins can both source and sink IO current. Then take the junction between the two to an Analogue in pin. You get two measurements each cycle. Use a lookup table of values and interpolate between them. If you wanted more precision - add more series resistors of different values covering the range of humidity that you want to sense, going to different IO pins. So you can choose the IO pin pair that brings the centre point between sensor and resistor closest to the mid-voltage point. It’s effectively a balanced half bridge arrangement - using the precision of the resistors to determine overall measurement precision. OK it ties up several IO pins - but microcontrollers are so cheap, I’d probably just dedicate one to this sensor and that’s all that it would do." +lang: "en" +isAdult: false +favouriteCount: 1 +score: 0 +lastActive: DateTime @1688622526 {#4098 : 2023-07-06 07:48:46.0 +02:00 } +ip: null +tags: null +mentions: [ "@macusking@discuss.tchncs.de" "@Susan_B_Good@discuss.tchncs.de" ] +children: Doctrine\ORM\PersistentCollection {#4095 …} +nested: Doctrine\ORM\PersistentCollection {#4092 …} +votes: Doctrine\ORM\PersistentCollection {#4089 …} +reports: Doctrine\ORM\PersistentCollection {#4104 …} +favourites: Doctrine\ORM\PersistentCollection {#4106 …} +notifications: Doctrine\ORM\PersistentCollection {#4108 …} -id: 8568 -bodyTs: "'add':94 'analogu':70 'arrang':147 'balanc':144 'bridg':146 'bring':125 'centr':127 'cheap':170 'choos':119 'closest':133 'cover':101 'current':60 'cycl':78 'd':172 'dedic':175 'determin':155 'differ':99,113 'digit':10 'effect':142 'generat':17 'get':74 'go':111 'half':145 'high':38 'humid':105 'interpol':86 'io':11,36,52,59,114,121,164 'junction':64 'lookup':81 'low':44 'measur':76,157 'microcontrol':167 'mid':137 'mid-voltag':136 'ok':159 'one':35,176 'overal':156 'pair':123 'pin':12,37,53,72,115,122,165 'plus':25 'point':128,139 'precis':28,93,150,158 'presum':50 'probabl':173 'processor':15 'pull':34,43 'put':22 'rang':103 'refer':19 'resistor':29,97,132,153 'sens':110 'sensor':24,130,179 'seri':27,96 'sever':163 'sink':58 'sourc':56 'squar':20 'swap':47 'tabl':82 'take':62 'tie':161 'two':9,67,75 'use':8,79,148 'valu':84,100 'voltag':138 'want':91,108 'wave':21 'would':3,186" +ranking: 0 +commentCount: 0 +upVotes: 0 +downVotes: 0 +visibility: "visible " +apId: "https://discuss.tchncs.de/comment/678173" +editedAt: null +createdAt: DateTimeImmutable @1688622526 {#4101 : 2023-07-06 07:48:46.0 +02:00 } } +root: App\Entity\EntryComment {#4020} +body: "Thank you. I’ll try this approach!" +lang: "en" +isAdult: false +favouriteCount: 0 +score: 0 +lastActive: DateTime @1688761530 {#4120 : 2023-07-07 22:25:30.0 +02:00 } +ip: null +tags: null +mentions: [ "@macusking@discuss.tchncs.de" "@Susan_B_Good@discuss.tchncs.de" ] +children: Doctrine\ORM\PersistentCollection {#4117 …} +nested: Doctrine\ORM\PersistentCollection {#4114 …} +votes: Doctrine\ORM\PersistentCollection {#4112 …} +reports: Doctrine\ORM\PersistentCollection {#4126 …} +favourites: Doctrine\ORM\PersistentCollection {#4128 …} +notifications: Doctrine\ORM\PersistentCollection {#4130 …} -id: 9042 -bodyTs: "'approach':7 'll':4 'thank':1 'tri':5" +ranking: 0 +commentCount: 0 +upVotes: 0 +downVotes: 0 +visibility: "visible " +apId: "https://discuss.tchncs.de/comment/749520" +editedAt: null +createdAt: DateTimeImmutable @1688761530 {#4123 : 2023-07-07 22:25:30.0 +02:00 } } +showMagazineName: false +showEntryTitle: false +showNested: true +level: 4 +canSeeTrash: false +dateAsUrl: false -requestStack: Symfony\Component\HttpFoundation\RequestStack {#1328 …} -authorizationChecker: Symfony\Component\Security\Core\Authorization\AuthorizationChecker {#931 …} } |
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date | App\Twig\Components\DateComponent | 12.0 MiB | 0.14 ms | |
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Input props | [ "date" => DateTimeImmutable @1688761530 {#4123 : 2023-07-07 22:25:30.0 +02:00 } ] |
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Attributes | [] |
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Component | App\Twig\Components\DateComponent {#6177 +date: DateTimeImmutable @1688761530 {#4123 : 2023-07-07 22:25:30.0 +02:00 } } |
date_edited | App\Twig\Components\DateEditedComponent | 12.0 MiB | 0.14 ms | |
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Input props | [ "createdAt" => DateTimeImmutable @1688761530 {#4123 : 2023-07-07 22:25:30.0 +02:00 } "editedAt" => null ] |
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Attributes | [] |
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Component | App\Twig\Components\DateEditedComponent {#6231 +createdAt: DateTimeImmutable @1688761530 {#4123 : 2023-07-07 22:25:30.0 +02:00 } +editedAt: null } |
user_avatar | App\Twig\Components\UserAvatarComponent | 12.0 MiB | 0.16 ms | |
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vote | App\Twig\Components\VoteComponent | 12.0 MiB | 0.59 ms | |
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+apPublicUrl: "https://discuss.tchncs.de/c/askelectronics" +apFollowersUrl: "https://discuss.tchncs.de/c/askelectronics/followers" +apInboxUrl: "https://discuss.tchncs.de/inbox" +apDomain: "discuss.tchncs.de" +apPreferredUsername: "askelectronics" +apDiscoverable: true +apManuallyApprovesFollowers: null +privateKey: null +publicKey: null +apFetchedAt: DateTime @1727247714 {#268 : 2024-09-25 09:01:54.0 +02:00 } +apDeletedAt: null +apTimeoutAt: null +visibility: "visible " +createdAt: DateTimeImmutable @1687144409 {#270 : 2023-06-19 05:13:29.0 +02:00 } } +image: null +domain: Proxies\__CG__\App\Entity\Domain {#1889 …} +slug: "Would-this-circuit-to-use-an-HR202-humidity-sensor-actually" +title: "Would this circuit to use an HR202 humidity sensor actually work?" +url: null +body: """ \n \n I wanna run a HR202 moisture sensor and an Arduino. Yes, I picked a HR202 to challenge myself to make it work. I already have some easier-to-use SHT40 in stock.\n \n This sensor can only run with AC 1.5Vpeak max. So, I’ve created this little circuit to provide AC, and I’ll only read it when the oscillator output is HIGH, so I can read it briefly at the same time with the help of Arduino’s ADC. Could this circuit work? Thank you. """ +type: "article" +lang: "en" +isOc: false +hasEmbed: false +commentCount: 4 +favouriteCount: 1 +score: 0 +isAdult: false +sticky: false +lastActive: DateTime @1688761530 {#2418 : 2023-07-07 22:25:30.0 +02:00 } +ip: null +adaAmount: 0 +tags: null +mentions: null +comments: Doctrine\ORM\PersistentCollection {#1688 …} +votes: Doctrine\ORM\PersistentCollection {#1966 …} +reports: Doctrine\ORM\PersistentCollection {#1965 …} +favourites: Doctrine\ORM\PersistentCollection {#1368 …} +notifications: Doctrine\ORM\PersistentCollection {#2426 …} +badges: Doctrine\ORM\PersistentCollection {#2439 …} +children: [] -id: 875 -titleTs: "'actual':10 'circuit':3 'hr202':7 'humid':8 'sensor':9 'use':5 'work':11 'would':1" -bodyTs: "'/pictrs/image/e2575314-be01-4a3f-bab2-cc75811b3ce8.png)':3 '1.5':44 'ac':43,56 'adc':85 'alreadi':27 'arduino':13,83 'briefli':74 'challeng':20 'circuit':53,88 'could':86 'creat':50 'discuss.tchncs.de':2 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Doctrine\ORM\PersistentCollection {#4073 …} +notifications: Doctrine\ORM\PersistentCollection {#4076 …} +awards: Doctrine\ORM\PersistentCollection {#4074 …} +subscribedCategories: Doctrine\ORM\PersistentCollection {#4072 …} +categories: Doctrine\ORM\PersistentCollection {#4071 …} -id: 5835 -password: "$2y$13$/0ECxSzDnJN92aSFqdmLL.rBetZbWXolSrH9fzhaWu4zwzjKeCSFi" -totpSecret: null -totpBackupCodes: [] -oAuth2UserConsents: Doctrine\ORM\PersistentCollection {#4064 …} +apId: "Susan_B_Good@discuss.tchncs.de" +apProfileId: "https://discuss.tchncs.de/u/Susan_B_Good" +apPublicUrl: "https://discuss.tchncs.de/u/Susan_B_Good" +apFollowersUrl: null +apInboxUrl: "https://discuss.tchncs.de/inbox" +apDomain: "discuss.tchncs.de" +apPreferredUsername: "Susan_B_Good" +apDiscoverable: true +apManuallyApprovesFollowers: false +privateKey: null +publicKey: null +apFetchedAt: DateTime @1689070487 {#4024 : 2023-07-11 12:14:47.0 +02:00 } +apDeletedAt: null +apTimeoutAt: null +visibility: "visible " +createdAt: DateTimeImmutable @1687249795 {#4022 : 2023-06-20 10:29:55.0 +02:00 } } +entry: App\Entity\Entry {#2412} +magazine: App\Entity\Magazine {#264} +image: null +parent: App\Entity\EntryComment {#4048 +user: Proxies\__CG__\App\Entity\User {#1978 …2} +entry: App\Entity\Entry {#2412} +magazine: App\Entity\Magazine {#264} +image: null +parent: App\Entity\EntryComment {#4020 +user: App\Entity\User {#3968} +entry: App\Entity\Entry {#2412} +magazine: App\Entity\Magazine {#264} +image: null +parent: null +root: null +body: "I’m assuming that those "v"s are meters and not constant voltage sources. A 2.4v zener does NOT have exactly 2.4v across it. A 1.2 v supply will not be precisely 1.2v. Both will also vary with time and temperature. So, in practice there WILL be a dc component across the sensor - which will destroy it." +lang: "en" +isAdult: false +favouriteCount: 0 +score: 0 +lastActive: DateTime @1688761531 {#4029 : 2023-07-07 22:25:31.0 +02:00 } +ip: null +tags: null +mentions: [ "@macusking@discuss.tchncs.de" ] +children: Doctrine\ORM\PersistentCollection {#4018 …} +nested: Doctrine\ORM\PersistentCollection {#4016 …} +votes: Doctrine\ORM\PersistentCollection {#4014 …} +reports: Doctrine\ORM\PersistentCollection {#4012 …} +favourites: Doctrine\ORM\PersistentCollection {#3980 …} +notifications: Doctrine\ORM\PersistentCollection {#3984 …} -id: 8469 -bodyTs: "'1.2':28,35 '2.4':16,23 'across':25,54 'also':39 'assum':3 'compon':53 'constant':12 'dc':52 'destroy':59 'exact':22 'm':2 'meter':9 'practic':47 'precis':34 'sensor':56 'sourc':14 'suppli':30 'temperatur':44 'time':42 'v':6,17,24,29,36 'vari':40 'voltag':13 'zener':18" +ranking: 0 +commentCount: 0 +upVotes: 0 +downVotes: 0 +visibility: "visible " +apId: "https://discuss.tchncs.de/comment/661762" +editedAt: null +createdAt: DateTimeImmutable @1688586156 {#3965 : 2023-07-05 21:42:36.0 +02:00 } } +root: App\Entity\EntryComment {#4020} +body: "Thank you. Do you recommend me something (circuit) else? The 2.4v zener would provide about 2.4v. To keep 1.2V exactly half of the zener produced by the zener, I was considering split its voltage with 2 x 10k resistor in series and feed into an opamp in buffer configuration, so even it the 2.4 reference changes a little bit, the other side of circuit would be always zener / 2." +lang: "en" +isAdult: false +favouriteCount: 0 +score: 0 +lastActive: DateTime @1688587916 {#4043 : 2023-07-05 22:11:56.0 +02:00 } +ip: null +tags: null +mentions: [ "@macusking@discuss.tchncs.de" "@Susan_B_Good@discuss.tchncs.de" ] +children: Doctrine\ORM\PersistentCollection {#4051 …} +nested: Doctrine\ORM\PersistentCollection {#4053 …} +votes: Doctrine\ORM\PersistentCollection {#4055 …} +reports: Doctrine\ORM\PersistentCollection {#4036 …} +favourites: Doctrine\ORM\PersistentCollection {#4034 …} +notifications: Doctrine\ORM\PersistentCollection {#4032 …} -id: 8472 -bodyTs: "'1.2':21 '10k':41 '2':39,72 '2.4':11,17,57 'alway':70 'bit':62 'buffer':51 'chang':59 'circuit':8,67 'configur':52 'consid':34 'els':9 'even':54 'exact':23 'feed':46 'half':24 'keep':20 'littl':61 'opamp':49 'produc':28 'provid':15 'recommend':5 'refer':58 'resistor':42 'seri':44 'side':65 'someth':7 'split':35 'thank':1 'v':12,18,22 'voltag':37 'would':14,68 'x':40 'zener':13,27,31,71" +ranking: 0 +commentCount: 0 +upVotes: 0 +downVotes: 0 +visibility: "visible " +apId: "https://discuss.tchncs.de/comment/662713" +editedAt: DateTimeImmutable @1688588351 {#4040 : 2023-07-05 22:19:11.0 +02:00 } +createdAt: DateTimeImmutable @1688587916 {#4038 : 2023-07-05 22:11:56.0 +02:00 } } +root: App\Entity\EntryComment {#4020} +body: "How I would do it is to use two digital IO pins on the processor to generate the reference square wave. Put the sensor plus a series precision resistor between them and just pull one IO pin high as the other is pulled low and then swap them. That presumes that IO pins can both source and sink IO current. Then take the junction between the two to an Analogue in pin. You get two measurements each cycle. Use a lookup table of values and interpolate between them. If you wanted more precision - add more series resistors of different values covering the range of humidity that you want to sense, going to different IO pins. So you can choose the IO pin pair that brings the centre point between sensor and resistor closest to the mid-voltage point. It’s effectively a balanced half bridge arrangement - using the precision of the resistors to determine overall measurement precision. OK it ties up several IO pins - but microcontrollers are so cheap, I’d probably just dedicate one to this sensor and that’s all that it would do." +lang: "en" +isAdult: false +favouriteCount: 1 +score: 0 +lastActive: DateTime @1688622526 {#4098 : 2023-07-06 07:48:46.0 +02:00 } +ip: null +tags: null +mentions: [ "@macusking@discuss.tchncs.de" "@Susan_B_Good@discuss.tchncs.de" ] +children: Doctrine\ORM\PersistentCollection {#4095 …} +nested: Doctrine\ORM\PersistentCollection {#4092 …} +votes: Doctrine\ORM\PersistentCollection {#4089 …} +reports: Doctrine\ORM\PersistentCollection {#4104 …} +favourites: Doctrine\ORM\PersistentCollection {#4106 …} +notifications: Doctrine\ORM\PersistentCollection {#4108 …} -id: 8568 -bodyTs: "'add':94 'analogu':70 'arrang':147 'balanc':144 'bridg':146 'bring':125 'centr':127 'cheap':170 'choos':119 'closest':133 'cover':101 'current':60 'cycl':78 'd':172 'dedic':175 'determin':155 'differ':99,113 'digit':10 'effect':142 'generat':17 'get':74 'go':111 'half':145 'high':38 'humid':105 'interpol':86 'io':11,36,52,59,114,121,164 'junction':64 'lookup':81 'low':44 'measur':76,157 'microcontrol':167 'mid':137 'mid-voltag':136 'ok':159 'one':35,176 'overal':156 'pair':123 'pin':12,37,53,72,115,122,165 'plus':25 'point':128,139 'precis':28,93,150,158 'presum':50 'probabl':173 'processor':15 'pull':34,43 'put':22 'rang':103 'refer':19 'resistor':29,97,132,153 'sens':110 'sensor':24,130,179 'seri':27,96 'sever':163 'sink':58 'sourc':56 'squar':20 'swap':47 'tabl':82 'take':62 'tie':161 'two':9,67,75 'use':8,79,148 'valu':84,100 'voltag':138 'want':91,108 'wave':21 'would':3,186" +ranking: 0 +commentCount: 0 +upVotes: 0 +downVotes: 0 +visibility: "visible " +apId: "https://discuss.tchncs.de/comment/678173" +editedAt: null +createdAt: DateTimeImmutable @1688622526 {#4101 : 2023-07-06 07:48:46.0 +02:00 } } +root: App\Entity\EntryComment {#4020} +body: "Thank you. I’ll try this approach!" +lang: "en" +isAdult: false +favouriteCount: 0 +score: 0 +lastActive: DateTime @1688761530 {#4120 : 2023-07-07 22:25:30.0 +02:00 } +ip: null +tags: null +mentions: [ "@macusking@discuss.tchncs.de" "@Susan_B_Good@discuss.tchncs.de" ] +children: Doctrine\ORM\PersistentCollection {#4117 …} +nested: Doctrine\ORM\PersistentCollection {#4114 …} +votes: Doctrine\ORM\PersistentCollection {#4112 …} +reports: Doctrine\ORM\PersistentCollection {#4126 …} +favourites: Doctrine\ORM\PersistentCollection {#4128 …} +notifications: Doctrine\ORM\PersistentCollection {#4130 …} -id: 9042 -bodyTs: "'approach':7 'll':4 'thank':1 'tri':5" +ranking: 0 +commentCount: 0 +upVotes: 0 +downVotes: 0 +visibility: "visible " +apId: "https://discuss.tchncs.de/comment/749520" +editedAt: null +createdAt: DateTimeImmutable @1688761530 {#4123 : 2023-07-07 22:25:30.0 +02:00 } } ] |
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valuations.\n \n 4: Be safe.\n \n --- """ +rules: null +subscriptionsCount: 1 +entryCount: 154 +entryCommentCount: 1230 +postCount: 1 +postCommentCount: 4 +isAdult: false +customCss: null +lastActive: DateTime @1729413608 {#274 : 2024-10-20 10:40:08.0 +02:00 } +markedForDeletionAt: null +tags: null +moderators: Doctrine\ORM\PersistentCollection {#236 …} +ownershipRequests: Doctrine\ORM\PersistentCollection {#232 …} +moderatorRequests: Doctrine\ORM\PersistentCollection {#221 …} +entries: Doctrine\ORM\PersistentCollection {#179 …} +posts: Doctrine\ORM\PersistentCollection {#137 …} +subscriptions: Doctrine\ORM\PersistentCollection {#199 …} +bans: Doctrine\ORM\PersistentCollection {#116 …} +reports: Doctrine\ORM\PersistentCollection {#102 …} +badges: Doctrine\ORM\PersistentCollection {#80 …} +logs: Doctrine\ORM\PersistentCollection {#70 …} +awards: Doctrine\ORM\PersistentCollection {#1360 …} +categories: Doctrine\ORM\PersistentCollection {#1792 …} -id: 11 +apId: 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Yes, I picked a HR202 to challenge myself to make it work. I already have some easier-to-use SHT40 in stock.\n \n This sensor can only run with AC 1.5Vpeak max. So, I’ve created this little circuit to provide AC, and I’ll only read it when the oscillator output is HIGH, so I can read it briefly at the same time with the help of Arduino’s ADC. Could this circuit work? Thank you. """ +type: "article" +lang: "en" +isOc: false +hasEmbed: false +commentCount: 4 +favouriteCount: 1 +score: 0 +isAdult: false +sticky: false +lastActive: DateTime @1688761530 {#2418 : 2023-07-07 22:25:30.0 +02:00 } +ip: null +adaAmount: 0 +tags: null +mentions: null +comments: Doctrine\ORM\PersistentCollection {#1688 …} +votes: Doctrine\ORM\PersistentCollection {#1966 …} +reports: Doctrine\ORM\PersistentCollection {#1965 …} +favourites: Doctrine\ORM\PersistentCollection {#1368 …} +notifications: Doctrine\ORM\PersistentCollection {#2426 …} +badges: Doctrine\ORM\PersistentCollection {#2439 …} +children: [] -id: 875 -titleTs: "'actual':10 'circuit':3 'hr202':7 'humid':8 'sensor':9 'use':5 'work':11 'would':1" -bodyTs: "'/pictrs/image/e2575314-be01-4a3f-bab2-cc75811b3ce8.png)':3 '1.5':44 'ac':43,56 'adc':85 'alreadi':27 'arduino':13,83 'briefli':74 'challeng':20 'circuit':53,88 'could':86 'creat':50 'discuss.tchncs.de':2 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+createdAt: DateTimeImmutable @1687249795 {#4022 : 2023-06-20 10:29:55.0 +02:00 } } +entry: App\Entity\Entry {#2412} +magazine: App\Entity\Magazine {#264} +image: null +parent: App\Entity\EntryComment {#4048 +user: Proxies\__CG__\App\Entity\User {#1978 …2} +entry: App\Entity\Entry {#2412} +magazine: App\Entity\Magazine {#264} +image: null +parent: App\Entity\EntryComment {#4020 +user: App\Entity\User {#3968} +entry: App\Entity\Entry {#2412} +magazine: App\Entity\Magazine {#264} +image: null +parent: null +root: null +body: "I’m assuming that those "v"s are meters and not constant voltage sources. A 2.4v zener does NOT have exactly 2.4v across it. A 1.2 v supply will not be precisely 1.2v. Both will also vary with time and temperature. So, in practice there WILL be a dc component across the sensor - which will destroy it." +lang: "en" +isAdult: false +favouriteCount: 0 +score: 0 +lastActive: DateTime @1688761531 {#4029 : 2023-07-07 22:25:31.0 +02:00 } +ip: null +tags: null +mentions: [ "@macusking@discuss.tchncs.de" ] +children: Doctrine\ORM\PersistentCollection {#4018 …} +nested: Doctrine\ORM\PersistentCollection {#4016 …} +votes: Doctrine\ORM\PersistentCollection {#4014 …} +reports: Doctrine\ORM\PersistentCollection {#4012 …} +favourites: Doctrine\ORM\PersistentCollection {#3980 …} +notifications: Doctrine\ORM\PersistentCollection {#3984 …} -id: 8469 -bodyTs: "'1.2':28,35 '2.4':16,23 'across':25,54 'also':39 'assum':3 'compon':53 'constant':12 'dc':52 'destroy':59 'exact':22 'm':2 'meter':9 'practic':47 'precis':34 'sensor':56 'sourc':14 'suppli':30 'temperatur':44 'time':42 'v':6,17,24,29,36 'vari':40 'voltag':13 'zener':18" +ranking: 0 +commentCount: 0 +upVotes: 0 +downVotes: 0 +visibility: "visible " +apId: "https://discuss.tchncs.de/comment/661762" +editedAt: null +createdAt: DateTimeImmutable @1688586156 {#3965 : 2023-07-05 21:42:36.0 +02:00 } } +root: App\Entity\EntryComment {#4020} +body: "Thank you. Do you recommend me something (circuit) else? The 2.4v zener would provide about 2.4v. To keep 1.2V exactly half of the zener produced by the zener, I was considering split its voltage with 2 x 10k resistor in series and feed into an opamp in buffer configuration, so even it the 2.4 reference changes a little bit, the other side of circuit would be always zener / 2." +lang: "en" +isAdult: false +favouriteCount: 0 +score: 0 +lastActive: DateTime @1688587916 {#4043 : 2023-07-05 22:11:56.0 +02:00 } +ip: null +tags: null +mentions: [ "@macusking@discuss.tchncs.de" "@Susan_B_Good@discuss.tchncs.de" ] +children: Doctrine\ORM\PersistentCollection {#4051 …} +nested: Doctrine\ORM\PersistentCollection {#4053 …} +votes: Doctrine\ORM\PersistentCollection {#4055 …} +reports: Doctrine\ORM\PersistentCollection {#4036 …} +favourites: Doctrine\ORM\PersistentCollection {#4034 …} +notifications: Doctrine\ORM\PersistentCollection {#4032 …} -id: 8472 -bodyTs: "'1.2':21 '10k':41 '2':39,72 '2.4':11,17,57 'alway':70 'bit':62 'buffer':51 'chang':59 'circuit':8,67 'configur':52 'consid':34 'els':9 'even':54 'exact':23 'feed':46 'half':24 'keep':20 'littl':61 'opamp':49 'produc':28 'provid':15 'recommend':5 'refer':58 'resistor':42 'seri':44 'side':65 'someth':7 'split':35 'thank':1 'v':12,18,22 'voltag':37 'would':14,68 'x':40 'zener':13,27,31,71" +ranking: 0 +commentCount: 0 +upVotes: 0 +downVotes: 0 +visibility: "visible " +apId: "https://discuss.tchncs.de/comment/662713" +editedAt: DateTimeImmutable @1688588351 {#4040 : 2023-07-05 22:19:11.0 +02:00 } +createdAt: DateTimeImmutable @1688587916 {#4038 : 2023-07-05 22:11:56.0 +02:00 } } +root: App\Entity\EntryComment {#4020} +body: "How I would do it is to use two digital IO pins on the processor to generate the reference square wave. Put the sensor plus a series precision resistor between them and just pull one IO pin high as the other is pulled low and then swap them. That presumes that IO pins can both source and sink IO current. Then take the junction between the two to an Analogue in pin. You get two measurements each cycle. Use a lookup table of values and interpolate between them. If you wanted more precision - add more series resistors of different values covering the range of humidity that you want to sense, going to different IO pins. So you can choose the IO pin pair that brings the centre point between sensor and resistor closest to the mid-voltage point. It’s effectively a balanced half bridge arrangement - using the precision of the resistors to determine overall measurement precision. OK it ties up several IO pins - but microcontrollers are so cheap, I’d probably just dedicate one to this sensor and that’s all that it would do." +lang: "en" +isAdult: false +favouriteCount: 1 +score: 0 +lastActive: DateTime @1688622526 {#4098 : 2023-07-06 07:48:46.0 +02:00 } +ip: null +tags: null +mentions: [ "@macusking@discuss.tchncs.de" "@Susan_B_Good@discuss.tchncs.de" ] +children: Doctrine\ORM\PersistentCollection {#4095 …} +nested: Doctrine\ORM\PersistentCollection {#4092 …} +votes: Doctrine\ORM\PersistentCollection {#4089 …} +reports: Doctrine\ORM\PersistentCollection {#4104 …} +favourites: Doctrine\ORM\PersistentCollection {#4106 …} +notifications: Doctrine\ORM\PersistentCollection {#4108 …} -id: 8568 -bodyTs: "'add':94 'analogu':70 'arrang':147 'balanc':144 'bridg':146 'bring':125 'centr':127 'cheap':170 'choos':119 'closest':133 'cover':101 'current':60 'cycl':78 'd':172 'dedic':175 'determin':155 'differ':99,113 'digit':10 'effect':142 'generat':17 'get':74 'go':111 'half':145 'high':38 'humid':105 'interpol':86 'io':11,36,52,59,114,121,164 'junction':64 'lookup':81 'low':44 'measur':76,157 'microcontrol':167 'mid':137 'mid-voltag':136 'ok':159 'one':35,176 'overal':156 'pair':123 'pin':12,37,53,72,115,122,165 'plus':25 'point':128,139 'precis':28,93,150,158 'presum':50 'probabl':173 'processor':15 'pull':34,43 'put':22 'rang':103 'refer':19 'resistor':29,97,132,153 'sens':110 'sensor':24,130,179 'seri':27,96 'sever':163 'sink':58 'sourc':56 'squar':20 'swap':47 'tabl':82 'take':62 'tie':161 'two':9,67,75 'use':8,79,148 'valu':84,100 'voltag':138 'want':91,108 'wave':21 'would':3,186" +ranking: 0 +commentCount: 0 +upVotes: 0 +downVotes: 0 +visibility: "visible " +apId: "https://discuss.tchncs.de/comment/678173" +editedAt: null +createdAt: DateTimeImmutable @1688622526 {#4101 : 2023-07-06 07:48:46.0 +02:00 } } +root: App\Entity\EntryComment {#4020} +body: "Thank you. I’ll try this approach!" +lang: "en" +isAdult: false +favouriteCount: 0 +score: 0 +lastActive: DateTime @1688761530 {#4120 : 2023-07-07 22:25:30.0 +02:00 } +ip: null +tags: null +mentions: [ "@macusking@discuss.tchncs.de" "@Susan_B_Good@discuss.tchncs.de" ] +children: Doctrine\ORM\PersistentCollection {#4117 …} +nested: Doctrine\ORM\PersistentCollection {#4114 …} +votes: Doctrine\ORM\PersistentCollection {#4112 …} +reports: Doctrine\ORM\PersistentCollection {#4126 …} +favourites: Doctrine\ORM\PersistentCollection {#4128 …} +notifications: Doctrine\ORM\PersistentCollection {#4130 …} -id: 9042 -bodyTs: "'approach':7 'll':4 'thank':1 'tri':5" +ranking: 0 +commentCount: 0 +upVotes: 0 +downVotes: 0 +visibility: "visible " +apId: "https://discuss.tchncs.de/comment/749520" +editedAt: null +createdAt: DateTimeImmutable @1688761530 {#4123 : 2023-07-07 22:25:30.0 +02:00 } } +formDest: "entry_comment" +showDownvote: true -cache: Symfony\Component\Cache\Adapter\TraceableTagAwareAdapter {#600 …} } |
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Yes, I picked a HR202 to challenge myself to make it work. I already have some easier-to-use SHT40 in stock.\n \n This sensor can only run with AC 1.5Vpeak max. So, I’ve created this little circuit to provide AC, and I’ll only read it when the oscillator output is HIGH, so I can read it briefly at the same time with the help of Arduino’s ADC. Could this circuit work? Thank you. """ +type: "article" +lang: "en" +isOc: false +hasEmbed: false +commentCount: 4 +favouriteCount: 1 +score: 0 +isAdult: false +sticky: false +lastActive: DateTime @1688761530 {#2418 : 2023-07-07 22:25:30.0 +02:00 } +ip: null +adaAmount: 0 +tags: null +mentions: null +comments: Doctrine\ORM\PersistentCollection {#1688 …} +votes: Doctrine\ORM\PersistentCollection {#1966 …} +reports: Doctrine\ORM\PersistentCollection {#1965 …} +favourites: Doctrine\ORM\PersistentCollection {#1368 …} +notifications: Doctrine\ORM\PersistentCollection {#2426 …} +badges: Doctrine\ORM\PersistentCollection {#2439 …} +children: [] -id: 875 -titleTs: "'actual':10 'circuit':3 'hr202':7 'humid':8 'sensor':9 'use':5 'work':11 'would':1" -bodyTs: "'/pictrs/image/e2575314-be01-4a3f-bab2-cc75811b3ce8.png)':3 '1.5':44 'ac':43,56 'adc':85 'alreadi':27 'arduino':13,83 'briefli':74 'challeng':20 'circuit':53,88 'could':86 'creat':50 'discuss.tchncs.de':2 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+createdAt: DateTimeImmutable @1687249795 {#4022 : 2023-06-20 10:29:55.0 +02:00 } } +entry: App\Entity\Entry {#2412} +magazine: App\Entity\Magazine {#264} +image: null +parent: App\Entity\EntryComment {#4048 +user: Proxies\__CG__\App\Entity\User {#1978 …2} +entry: App\Entity\Entry {#2412} +magazine: App\Entity\Magazine {#264} +image: null +parent: App\Entity\EntryComment {#4020 +user: App\Entity\User {#3968} +entry: App\Entity\Entry {#2412} +magazine: App\Entity\Magazine {#264} +image: null +parent: null +root: null +body: "I’m assuming that those "v"s are meters and not constant voltage sources. A 2.4v zener does NOT have exactly 2.4v across it. A 1.2 v supply will not be precisely 1.2v. Both will also vary with time and temperature. So, in practice there WILL be a dc component across the sensor - which will destroy it." +lang: "en" +isAdult: false +favouriteCount: 0 +score: 0 +lastActive: DateTime @1688761531 {#4029 : 2023-07-07 22:25:31.0 +02:00 } +ip: null +tags: null +mentions: [ "@macusking@discuss.tchncs.de" ] +children: Doctrine\ORM\PersistentCollection {#4018 …} +nested: Doctrine\ORM\PersistentCollection {#4016 …} +votes: Doctrine\ORM\PersistentCollection {#4014 …} +reports: Doctrine\ORM\PersistentCollection {#4012 …} +favourites: Doctrine\ORM\PersistentCollection {#3980 …} +notifications: Doctrine\ORM\PersistentCollection {#3984 …} -id: 8469 -bodyTs: "'1.2':28,35 '2.4':16,23 'across':25,54 'also':39 'assum':3 'compon':53 'constant':12 'dc':52 'destroy':59 'exact':22 'm':2 'meter':9 'practic':47 'precis':34 'sensor':56 'sourc':14 'suppli':30 'temperatur':44 'time':42 'v':6,17,24,29,36 'vari':40 'voltag':13 'zener':18" +ranking: 0 +commentCount: 0 +upVotes: 0 +downVotes: 0 +visibility: "visible " +apId: "https://discuss.tchncs.de/comment/661762" +editedAt: null +createdAt: DateTimeImmutable @1688586156 {#3965 : 2023-07-05 21:42:36.0 +02:00 } } +root: App\Entity\EntryComment {#4020} +body: "Thank you. Do you recommend me something (circuit) else? The 2.4v zener would provide about 2.4v. To keep 1.2V exactly half of the zener produced by the zener, I was considering split its voltage with 2 x 10k resistor in series and feed into an opamp in buffer configuration, so even it the 2.4 reference changes a little bit, the other side of circuit would be always zener / 2." +lang: "en" +isAdult: false +favouriteCount: 0 +score: 0 +lastActive: DateTime @1688587916 {#4043 : 2023-07-05 22:11:56.0 +02:00 } +ip: null +tags: null +mentions: [ "@macusking@discuss.tchncs.de" "@Susan_B_Good@discuss.tchncs.de" ] +children: Doctrine\ORM\PersistentCollection {#4051 …} +nested: Doctrine\ORM\PersistentCollection {#4053 …} +votes: Doctrine\ORM\PersistentCollection {#4055 …} +reports: Doctrine\ORM\PersistentCollection {#4036 …} +favourites: Doctrine\ORM\PersistentCollection {#4034 …} +notifications: Doctrine\ORM\PersistentCollection {#4032 …} -id: 8472 -bodyTs: "'1.2':21 '10k':41 '2':39,72 '2.4':11,17,57 'alway':70 'bit':62 'buffer':51 'chang':59 'circuit':8,67 'configur':52 'consid':34 'els':9 'even':54 'exact':23 'feed':46 'half':24 'keep':20 'littl':61 'opamp':49 'produc':28 'provid':15 'recommend':5 'refer':58 'resistor':42 'seri':44 'side':65 'someth':7 'split':35 'thank':1 'v':12,18,22 'voltag':37 'would':14,68 'x':40 'zener':13,27,31,71" +ranking: 0 +commentCount: 0 +upVotes: 0 +downVotes: 0 +visibility: "visible " +apId: "https://discuss.tchncs.de/comment/662713" +editedAt: DateTimeImmutable @1688588351 {#4040 : 2023-07-05 22:19:11.0 +02:00 } +createdAt: DateTimeImmutable @1688587916 {#4038 : 2023-07-05 22:11:56.0 +02:00 } } +root: App\Entity\EntryComment {#4020} +body: "How I would do it is to use two digital IO pins on the processor to generate the reference square wave. Put the sensor plus a series precision resistor between them and just pull one IO pin high as the other is pulled low and then swap them. That presumes that IO pins can both source and sink IO current. Then take the junction between the two to an Analogue in pin. You get two measurements each cycle. Use a lookup table of values and interpolate between them. If you wanted more precision - add more series resistors of different values covering the range of humidity that you want to sense, going to different IO pins. So you can choose the IO pin pair that brings the centre point between sensor and resistor closest to the mid-voltage point. It’s effectively a balanced half bridge arrangement - using the precision of the resistors to determine overall measurement precision. OK it ties up several IO pins - but microcontrollers are so cheap, I’d probably just dedicate one to this sensor and that’s all that it would do." +lang: "en" +isAdult: false +favouriteCount: 1 +score: 0 +lastActive: DateTime @1688622526 {#4098 : 2023-07-06 07:48:46.0 +02:00 } +ip: null +tags: null +mentions: [ "@macusking@discuss.tchncs.de" "@Susan_B_Good@discuss.tchncs.de" ] +children: Doctrine\ORM\PersistentCollection {#4095 …} +nested: Doctrine\ORM\PersistentCollection {#4092 …} +votes: Doctrine\ORM\PersistentCollection {#4089 …} +reports: Doctrine\ORM\PersistentCollection {#4104 …} +favourites: Doctrine\ORM\PersistentCollection {#4106 …} +notifications: Doctrine\ORM\PersistentCollection {#4108 …} -id: 8568 -bodyTs: "'add':94 'analogu':70 'arrang':147 'balanc':144 'bridg':146 'bring':125 'centr':127 'cheap':170 'choos':119 'closest':133 'cover':101 'current':60 'cycl':78 'd':172 'dedic':175 'determin':155 'differ':99,113 'digit':10 'effect':142 'generat':17 'get':74 'go':111 'half':145 'high':38 'humid':105 'interpol':86 'io':11,36,52,59,114,121,164 'junction':64 'lookup':81 'low':44 'measur':76,157 'microcontrol':167 'mid':137 'mid-voltag':136 'ok':159 'one':35,176 'overal':156 'pair':123 'pin':12,37,53,72,115,122,165 'plus':25 'point':128,139 'precis':28,93,150,158 'presum':50 'probabl':173 'processor':15 'pull':34,43 'put':22 'rang':103 'refer':19 'resistor':29,97,132,153 'sens':110 'sensor':24,130,179 'seri':27,96 'sever':163 'sink':58 'sourc':56 'squar':20 'swap':47 'tabl':82 'take':62 'tie':161 'two':9,67,75 'use':8,79,148 'valu':84,100 'voltag':138 'want':91,108 'wave':21 'would':3,186" +ranking: 0 +commentCount: 0 +upVotes: 0 +downVotes: 0 +visibility: "visible " +apId: "https://discuss.tchncs.de/comment/678173" +editedAt: null +createdAt: DateTimeImmutable @1688622526 {#4101 : 2023-07-06 07:48:46.0 +02:00 } } +root: App\Entity\EntryComment {#4020} +body: "Thank you. I’ll try this approach!" +lang: "en" +isAdult: false +favouriteCount: 0 +score: 0 +lastActive: DateTime @1688761530 {#4120 : 2023-07-07 22:25:30.0 +02:00 } +ip: null +tags: null +mentions: [ "@macusking@discuss.tchncs.de" "@Susan_B_Good@discuss.tchncs.de" ] +children: Doctrine\ORM\PersistentCollection {#4117 …} +nested: Doctrine\ORM\PersistentCollection {#4114 …} +votes: Doctrine\ORM\PersistentCollection {#4112 …} +reports: Doctrine\ORM\PersistentCollection {#4126 …} +favourites: Doctrine\ORM\PersistentCollection {#4128 …} +notifications: Doctrine\ORM\PersistentCollection {#4130 …} -id: 9042 -bodyTs: "'approach':7 'll':4 'thank':1 'tri':5" +ranking: 0 +commentCount: 0 +upVotes: 0 +downVotes: 0 +visibility: "visible " +apId: "https://discuss.tchncs.de/comment/749520" +editedAt: null +createdAt: DateTimeImmutable @1688761530 {#4123 : 2023-07-07 22:25:30.0 +02:00 } } ] |
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Yes, I picked a HR202 to challenge myself to make it work. I already have some easier-to-use SHT40 in stock.\n \n This sensor can only run with AC 1.5Vpeak max. So, I’ve created this little circuit to provide AC, and I’ll only read it when the oscillator output is HIGH, so I can read it briefly at the same time with the help of Arduino’s ADC. Could this circuit work? Thank you. """ +type: "article" +lang: "en" +isOc: false +hasEmbed: false +commentCount: 4 +favouriteCount: 1 +score: 0 +isAdult: false +sticky: false +lastActive: DateTime @1688761530 {#2418 : 2023-07-07 22:25:30.0 +02:00 } +ip: null +adaAmount: 0 +tags: null +mentions: null +comments: Doctrine\ORM\PersistentCollection {#1688 …} +votes: Doctrine\ORM\PersistentCollection {#1966 …} +reports: Doctrine\ORM\PersistentCollection {#1965 …} +favourites: Doctrine\ORM\PersistentCollection {#1368 …} +notifications: Doctrine\ORM\PersistentCollection {#2426 …} +badges: Doctrine\ORM\PersistentCollection {#2439 …} +children: [] -id: 875 -titleTs: "'actual':10 'circuit':3 'hr202':7 'humid':8 'sensor':9 'use':5 'work':11 'would':1" -bodyTs: "'/pictrs/image/e2575314-be01-4a3f-bab2-cc75811b3ce8.png)':3 '1.5':44 'ac':43,56 'adc':85 'alreadi':27 'arduino':13,83 'briefli':74 'challeng':20 'circuit':53,88 'could':86 'creat':50 'discuss.tchncs.de':2 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+createdAt: DateTimeImmutable @1687249795 {#4022 : 2023-06-20 10:29:55.0 +02:00 } } +entry: App\Entity\Entry {#2412} +magazine: App\Entity\Magazine {#264} +image: null +parent: App\Entity\EntryComment {#4048 +user: Proxies\__CG__\App\Entity\User {#1978 …2} +entry: App\Entity\Entry {#2412} +magazine: App\Entity\Magazine {#264} +image: null +parent: App\Entity\EntryComment {#4020 +user: App\Entity\User {#3968} +entry: App\Entity\Entry {#2412} +magazine: App\Entity\Magazine {#264} +image: null +parent: null +root: null +body: "I’m assuming that those "v"s are meters and not constant voltage sources. A 2.4v zener does NOT have exactly 2.4v across it. A 1.2 v supply will not be precisely 1.2v. Both will also vary with time and temperature. So, in practice there WILL be a dc component across the sensor - which will destroy it." +lang: "en" +isAdult: false +favouriteCount: 0 +score: 0 +lastActive: DateTime @1688761531 {#4029 : 2023-07-07 22:25:31.0 +02:00 } +ip: null +tags: null +mentions: [ "@macusking@discuss.tchncs.de" ] +children: Doctrine\ORM\PersistentCollection {#4018 …} +nested: Doctrine\ORM\PersistentCollection {#4016 …} +votes: Doctrine\ORM\PersistentCollection {#4014 …} +reports: Doctrine\ORM\PersistentCollection {#4012 …} +favourites: Doctrine\ORM\PersistentCollection {#3980 …} +notifications: Doctrine\ORM\PersistentCollection {#3984 …} -id: 8469 -bodyTs: "'1.2':28,35 '2.4':16,23 'across':25,54 'also':39 'assum':3 'compon':53 'constant':12 'dc':52 'destroy':59 'exact':22 'm':2 'meter':9 'practic':47 'precis':34 'sensor':56 'sourc':14 'suppli':30 'temperatur':44 'time':42 'v':6,17,24,29,36 'vari':40 'voltag':13 'zener':18" +ranking: 0 +commentCount: 0 +upVotes: 0 +downVotes: 0 +visibility: "visible " +apId: "https://discuss.tchncs.de/comment/661762" +editedAt: null +createdAt: DateTimeImmutable @1688586156 {#3965 : 2023-07-05 21:42:36.0 +02:00 } } +root: App\Entity\EntryComment {#4020} +body: "Thank you. Do you recommend me something (circuit) else? The 2.4v zener would provide about 2.4v. To keep 1.2V exactly half of the zener produced by the zener, I was considering split its voltage with 2 x 10k resistor in series and feed into an opamp in buffer configuration, so even it the 2.4 reference changes a little bit, the other side of circuit would be always zener / 2." +lang: "en" +isAdult: false +favouriteCount: 0 +score: 0 +lastActive: DateTime @1688587916 {#4043 : 2023-07-05 22:11:56.0 +02:00 } +ip: null +tags: null +mentions: [ "@macusking@discuss.tchncs.de" "@Susan_B_Good@discuss.tchncs.de" ] +children: Doctrine\ORM\PersistentCollection {#4051 …} +nested: Doctrine\ORM\PersistentCollection {#4053 …} +votes: Doctrine\ORM\PersistentCollection {#4055 …} +reports: Doctrine\ORM\PersistentCollection {#4036 …} +favourites: Doctrine\ORM\PersistentCollection {#4034 …} +notifications: Doctrine\ORM\PersistentCollection {#4032 …} -id: 8472 -bodyTs: "'1.2':21 '10k':41 '2':39,72 '2.4':11,17,57 'alway':70 'bit':62 'buffer':51 'chang':59 'circuit':8,67 'configur':52 'consid':34 'els':9 'even':54 'exact':23 'feed':46 'half':24 'keep':20 'littl':61 'opamp':49 'produc':28 'provid':15 'recommend':5 'refer':58 'resistor':42 'seri':44 'side':65 'someth':7 'split':35 'thank':1 'v':12,18,22 'voltag':37 'would':14,68 'x':40 'zener':13,27,31,71" +ranking: 0 +commentCount: 0 +upVotes: 0 +downVotes: 0 +visibility: "visible " +apId: "https://discuss.tchncs.de/comment/662713" +editedAt: DateTimeImmutable @1688588351 {#4040 : 2023-07-05 22:19:11.0 +02:00 } +createdAt: DateTimeImmutable @1688587916 {#4038 : 2023-07-05 22:11:56.0 +02:00 } } +root: App\Entity\EntryComment {#4020} +body: "How I would do it is to use two digital IO pins on the processor to generate the reference square wave. Put the sensor plus a series precision resistor between them and just pull one IO pin high as the other is pulled low and then swap them. That presumes that IO pins can both source and sink IO current. Then take the junction between the two to an Analogue in pin. You get two measurements each cycle. Use a lookup table of values and interpolate between them. If you wanted more precision - add more series resistors of different values covering the range of humidity that you want to sense, going to different IO pins. So you can choose the IO pin pair that brings the centre point between sensor and resistor closest to the mid-voltage point. It’s effectively a balanced half bridge arrangement - using the precision of the resistors to determine overall measurement precision. OK it ties up several IO pins - but microcontrollers are so cheap, I’d probably just dedicate one to this sensor and that’s all that it would do." +lang: "en" +isAdult: false +favouriteCount: 1 +score: 0 +lastActive: DateTime @1688622526 {#4098 : 2023-07-06 07:48:46.0 +02:00 } +ip: null +tags: null +mentions: [ "@macusking@discuss.tchncs.de" "@Susan_B_Good@discuss.tchncs.de" ] +children: Doctrine\ORM\PersistentCollection {#4095 …} +nested: Doctrine\ORM\PersistentCollection {#4092 …} +votes: Doctrine\ORM\PersistentCollection {#4089 …} +reports: Doctrine\ORM\PersistentCollection {#4104 …} +favourites: Doctrine\ORM\PersistentCollection {#4106 …} +notifications: Doctrine\ORM\PersistentCollection {#4108 …} -id: 8568 -bodyTs: "'add':94 'analogu':70 'arrang':147 'balanc':144 'bridg':146 'bring':125 'centr':127 'cheap':170 'choos':119 'closest':133 'cover':101 'current':60 'cycl':78 'd':172 'dedic':175 'determin':155 'differ':99,113 'digit':10 'effect':142 'generat':17 'get':74 'go':111 'half':145 'high':38 'humid':105 'interpol':86 'io':11,36,52,59,114,121,164 'junction':64 'lookup':81 'low':44 'measur':76,157 'microcontrol':167 'mid':137 'mid-voltag':136 'ok':159 'one':35,176 'overal':156 'pair':123 'pin':12,37,53,72,115,122,165 'plus':25 'point':128,139 'precis':28,93,150,158 'presum':50 'probabl':173 'processor':15 'pull':34,43 'put':22 'rang':103 'refer':19 'resistor':29,97,132,153 'sens':110 'sensor':24,130,179 'seri':27,96 'sever':163 'sink':58 'sourc':56 'squar':20 'swap':47 'tabl':82 'take':62 'tie':161 'two':9,67,75 'use':8,79,148 'valu':84,100 'voltag':138 'want':91,108 'wave':21 'would':3,186" +ranking: 0 +commentCount: 0 +upVotes: 0 +downVotes: 0 +visibility: "visible " +apId: "https://discuss.tchncs.de/comment/678173" +editedAt: null +createdAt: DateTimeImmutable @1688622526 {#4101 : 2023-07-06 07:48:46.0 +02:00 } } +root: App\Entity\EntryComment {#4020} +body: "Thank you. I’ll try this approach!" +lang: "en" +isAdult: false +favouriteCount: 0 +score: 0 +lastActive: DateTime @1688761530 {#4120 : 2023-07-07 22:25:30.0 +02:00 } +ip: null +tags: null +mentions: [ "@macusking@discuss.tchncs.de" "@Susan_B_Good@discuss.tchncs.de" ] +children: Doctrine\ORM\PersistentCollection {#4117 …} +nested: Doctrine\ORM\PersistentCollection {#4114 …} +votes: Doctrine\ORM\PersistentCollection {#4112 …} +reports: Doctrine\ORM\PersistentCollection {#4126 …} +favourites: Doctrine\ORM\PersistentCollection {#4128 …} +notifications: Doctrine\ORM\PersistentCollection {#4130 …} -id: 9042 -bodyTs: "'approach':7 'll':4 'thank':1 'tri':5" +ranking: 0 +commentCount: 0 +upVotes: 0 +downVotes: 0 +visibility: "visible " +apId: "https://discuss.tchncs.de/comment/749520" +editedAt: null +createdAt: DateTimeImmutable @1688761530 {#4123 : 2023-07-07 22:25:30.0 +02:00 } } -cache: Symfony\Component\Cache\Adapter\TraceableTagAwareAdapter {#600 …} } |
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Yes, I picked a HR202 to challenge myself to make it work. I already have some easier-to-use SHT40 in stock.\n \n This sensor can only run with AC 1.5Vpeak max. So, I’ve created this little circuit to provide AC, and I’ll only read it when the oscillator output is HIGH, so I can read it briefly at the same time with the help of Arduino’s ADC. Could this circuit work? Thank you. """ +type: "article" +lang: "en" +isOc: false +hasEmbed: false +commentCount: 4 +favouriteCount: 1 +score: 0 +isAdult: false +sticky: false +lastActive: DateTime @1688761530 {#2418 : 2023-07-07 22:25:30.0 +02:00 } +ip: null +adaAmount: 0 +tags: null +mentions: null +comments: Doctrine\ORM\PersistentCollection {#1688 …} +votes: Doctrine\ORM\PersistentCollection {#1966 …} +reports: Doctrine\ORM\PersistentCollection {#1965 …} +favourites: Doctrine\ORM\PersistentCollection {#1368 …} +notifications: Doctrine\ORM\PersistentCollection {#2426 …} +badges: Doctrine\ORM\PersistentCollection {#2439 …} +children: [] -id: 875 -titleTs: "'actual':10 'circuit':3 'hr202':7 'humid':8 'sensor':9 'use':5 'work':11 'would':1" -bodyTs: "'/pictrs/image/e2575314-be01-4a3f-bab2-cc75811b3ce8.png)':3 '1.5':44 'ac':43,56 'adc':85 'alreadi':27 'arduino':13,83 'briefli':74 'challeng':20 'circuit':53,88 'could':86 'creat':50 'discuss.tchncs.de':2 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+createdAt: DateTimeImmutable @1687249795 {#4022 : 2023-06-20 10:29:55.0 +02:00 } } +entry: App\Entity\Entry {#2412} +magazine: App\Entity\Magazine {#264} +image: null +parent: App\Entity\EntryComment {#4048 +user: Proxies\__CG__\App\Entity\User {#1978 …2} +entry: App\Entity\Entry {#2412} +magazine: App\Entity\Magazine {#264} +image: null +parent: App\Entity\EntryComment {#4020 +user: App\Entity\User {#3968} +entry: App\Entity\Entry {#2412} +magazine: App\Entity\Magazine {#264} +image: null +parent: null +root: null +body: "I’m assuming that those "v"s are meters and not constant voltage sources. A 2.4v zener does NOT have exactly 2.4v across it. A 1.2 v supply will not be precisely 1.2v. Both will also vary with time and temperature. So, in practice there WILL be a dc component across the sensor - which will destroy it." +lang: "en" +isAdult: false +favouriteCount: 0 +score: 0 +lastActive: DateTime @1688761531 {#4029 : 2023-07-07 22:25:31.0 +02:00 } +ip: null +tags: null +mentions: [ "@macusking@discuss.tchncs.de" ] +children: Doctrine\ORM\PersistentCollection {#4018 …} +nested: Doctrine\ORM\PersistentCollection {#4016 …} +votes: Doctrine\ORM\PersistentCollection {#4014 …} +reports: Doctrine\ORM\PersistentCollection {#4012 …} +favourites: Doctrine\ORM\PersistentCollection {#3980 …} +notifications: Doctrine\ORM\PersistentCollection {#3984 …} -id: 8469 -bodyTs: "'1.2':28,35 '2.4':16,23 'across':25,54 'also':39 'assum':3 'compon':53 'constant':12 'dc':52 'destroy':59 'exact':22 'm':2 'meter':9 'practic':47 'precis':34 'sensor':56 'sourc':14 'suppli':30 'temperatur':44 'time':42 'v':6,17,24,29,36 'vari':40 'voltag':13 'zener':18" +ranking: 0 +commentCount: 0 +upVotes: 0 +downVotes: 0 +visibility: "visible " +apId: "https://discuss.tchncs.de/comment/661762" +editedAt: null +createdAt: DateTimeImmutable @1688586156 {#3965 : 2023-07-05 21:42:36.0 +02:00 } } +root: App\Entity\EntryComment {#4020} +body: "Thank you. Do you recommend me something (circuit) else? The 2.4v zener would provide about 2.4v. To keep 1.2V exactly half of the zener produced by the zener, I was considering split its voltage with 2 x 10k resistor in series and feed into an opamp in buffer configuration, so even it the 2.4 reference changes a little bit, the other side of circuit would be always zener / 2." +lang: "en" +isAdult: false +favouriteCount: 0 +score: 0 +lastActive: DateTime @1688587916 {#4043 : 2023-07-05 22:11:56.0 +02:00 } +ip: null +tags: null +mentions: [ "@macusking@discuss.tchncs.de" "@Susan_B_Good@discuss.tchncs.de" ] +children: Doctrine\ORM\PersistentCollection {#4051 …} +nested: Doctrine\ORM\PersistentCollection {#4053 …} +votes: Doctrine\ORM\PersistentCollection {#4055 …} +reports: Doctrine\ORM\PersistentCollection {#4036 …} +favourites: Doctrine\ORM\PersistentCollection {#4034 …} +notifications: Doctrine\ORM\PersistentCollection {#4032 …} -id: 8472 -bodyTs: "'1.2':21 '10k':41 '2':39,72 '2.4':11,17,57 'alway':70 'bit':62 'buffer':51 'chang':59 'circuit':8,67 'configur':52 'consid':34 'els':9 'even':54 'exact':23 'feed':46 'half':24 'keep':20 'littl':61 'opamp':49 'produc':28 'provid':15 'recommend':5 'refer':58 'resistor':42 'seri':44 'side':65 'someth':7 'split':35 'thank':1 'v':12,18,22 'voltag':37 'would':14,68 'x':40 'zener':13,27,31,71" +ranking: 0 +commentCount: 0 +upVotes: 0 +downVotes: 0 +visibility: "visible " +apId: "https://discuss.tchncs.de/comment/662713" +editedAt: DateTimeImmutable @1688588351 {#4040 : 2023-07-05 22:19:11.0 +02:00 } +createdAt: DateTimeImmutable @1688587916 {#4038 : 2023-07-05 22:11:56.0 +02:00 } } +root: App\Entity\EntryComment {#4020} +body: "How I would do it is to use two digital IO pins on the processor to generate the reference square wave. Put the sensor plus a series precision resistor between them and just pull one IO pin high as the other is pulled low and then swap them. That presumes that IO pins can both source and sink IO current. Then take the junction between the two to an Analogue in pin. You get two measurements each cycle. Use a lookup table of values and interpolate between them. If you wanted more precision - add more series resistors of different values covering the range of humidity that you want to sense, going to different IO pins. So you can choose the IO pin pair that brings the centre point between sensor and resistor closest to the mid-voltage point. It’s effectively a balanced half bridge arrangement - using the precision of the resistors to determine overall measurement precision. OK it ties up several IO pins - but microcontrollers are so cheap, I’d probably just dedicate one to this sensor and that’s all that it would do." +lang: "en" +isAdult: false +favouriteCount: 1 +score: 0 +lastActive: DateTime @1688622526 {#4098 : 2023-07-06 07:48:46.0 +02:00 } +ip: null +tags: null +mentions: [ "@macusking@discuss.tchncs.de" "@Susan_B_Good@discuss.tchncs.de" ] +children: Doctrine\ORM\PersistentCollection {#4095 …} +nested: Doctrine\ORM\PersistentCollection {#4092 …} +votes: Doctrine\ORM\PersistentCollection {#4089 …} +reports: Doctrine\ORM\PersistentCollection {#4104 …} +favourites: Doctrine\ORM\PersistentCollection {#4106 …} +notifications: Doctrine\ORM\PersistentCollection {#4108 …} -id: 8568 -bodyTs: "'add':94 'analogu':70 'arrang':147 'balanc':144 'bridg':146 'bring':125 'centr':127 'cheap':170 'choos':119 'closest':133 'cover':101 'current':60 'cycl':78 'd':172 'dedic':175 'determin':155 'differ':99,113 'digit':10 'effect':142 'generat':17 'get':74 'go':111 'half':145 'high':38 'humid':105 'interpol':86 'io':11,36,52,59,114,121,164 'junction':64 'lookup':81 'low':44 'measur':76,157 'microcontrol':167 'mid':137 'mid-voltag':136 'ok':159 'one':35,176 'overal':156 'pair':123 'pin':12,37,53,72,115,122,165 'plus':25 'point':128,139 'precis':28,93,150,158 'presum':50 'probabl':173 'processor':15 'pull':34,43 'put':22 'rang':103 'refer':19 'resistor':29,97,132,153 'sens':110 'sensor':24,130,179 'seri':27,96 'sever':163 'sink':58 'sourc':56 'squar':20 'swap':47 'tabl':82 'take':62 'tie':161 'two':9,67,75 'use':8,79,148 'valu':84,100 'voltag':138 'want':91,108 'wave':21 'would':3,186" +ranking: 0 +commentCount: 0 +upVotes: 0 +downVotes: 0 +visibility: "visible " +apId: "https://discuss.tchncs.de/comment/678173" +editedAt: null +createdAt: DateTimeImmutable @1688622526 {#4101 : 2023-07-06 07:48:46.0 +02:00 } } +root: App\Entity\EntryComment {#4020} +body: "Thank you. I’ll try this approach!" +lang: "en" +isAdult: false +favouriteCount: 0 +score: 0 +lastActive: DateTime @1688761530 {#4120 : 2023-07-07 22:25:30.0 +02:00 } +ip: null +tags: null +mentions: [ "@macusking@discuss.tchncs.de" "@Susan_B_Good@discuss.tchncs.de" ] +children: Doctrine\ORM\PersistentCollection {#4117 …} +nested: Doctrine\ORM\PersistentCollection {#4114 …} +votes: Doctrine\ORM\PersistentCollection {#4112 …} +reports: Doctrine\ORM\PersistentCollection {#4126 …} +favourites: Doctrine\ORM\PersistentCollection {#4128 …} +notifications: Doctrine\ORM\PersistentCollection {#4130 …} -id: 9042 -bodyTs: "'approach':7 'll':4 'thank':1 'tri':5" +ranking: 0 +commentCount: 0 +upVotes: 0 +downVotes: 0 +visibility: "visible " +apId: "https://discuss.tchncs.de/comment/749520" +editedAt: null +createdAt: DateTimeImmutable @1688761530 {#4123 : 2023-07-07 22:25:30.0 +02:00 } } "level" => 4 "showNested" => true "view" => "tree" ] |
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"askelectronics@discuss.tchncs.de" +apProfileId: "https://discuss.tchncs.de/c/askelectronics" +apPublicUrl: "https://discuss.tchncs.de/c/askelectronics" +apFollowersUrl: "https://discuss.tchncs.de/c/askelectronics/followers" +apInboxUrl: "https://discuss.tchncs.de/inbox" +apDomain: "discuss.tchncs.de" +apPreferredUsername: "askelectronics" +apDiscoverable: true +apManuallyApprovesFollowers: null +privateKey: null +publicKey: null +apFetchedAt: DateTime @1727247714 {#268 : 2024-09-25 09:01:54.0 +02:00 } +apDeletedAt: null +apTimeoutAt: null +visibility: "visible " +createdAt: DateTimeImmutable @1687144409 {#270 : 2023-06-19 05:13:29.0 +02:00 } } +image: null +domain: Proxies\__CG__\App\Entity\Domain {#1889 …} +slug: "Would-this-circuit-to-use-an-HR202-humidity-sensor-actually" +title: "Would this circuit to use an HR202 humidity sensor actually work?" +url: null +body: """ \n \n I wanna run a HR202 moisture sensor and an Arduino. Yes, I picked a HR202 to challenge myself to make it work. I already have some easier-to-use SHT40 in stock.\n \n This sensor can only run with AC 1.5Vpeak max. So, I’ve created this little circuit to provide AC, and I’ll only read it when the oscillator output is HIGH, so I can read it briefly at the same time with the help of Arduino’s ADC. Could this circuit work? Thank you. """ +type: "article" +lang: "en" +isOc: false +hasEmbed: false +commentCount: 4 +favouriteCount: 1 +score: 0 +isAdult: false +sticky: false +lastActive: DateTime @1688761530 {#2418 : 2023-07-07 22:25:30.0 +02:00 } +ip: null +adaAmount: 0 +tags: null +mentions: null +comments: Doctrine\ORM\PersistentCollection {#1688 …} +votes: Doctrine\ORM\PersistentCollection {#1966 …} +reports: Doctrine\ORM\PersistentCollection {#1965 …} +favourites: Doctrine\ORM\PersistentCollection {#1368 …} +notifications: Doctrine\ORM\PersistentCollection {#2426 …} +badges: Doctrine\ORM\PersistentCollection {#2439 …} +children: [] -id: 875 -titleTs: "'actual':10 'circuit':3 'hr202':7 'humid':8 'sensor':9 'use':5 'work':11 'would':1" -bodyTs: "'/pictrs/image/e2575314-be01-4a3f-bab2-cc75811b3ce8.png)':3 '1.5':44 'ac':43,56 'adc':85 'alreadi':27 'arduino':13,83 'briefli':74 'challeng':20 'circuit':53,88 'could':86 'creat':50 'discuss.tchncs.de':2 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Doctrine\ORM\PersistentCollection {#4073 …} +notifications: Doctrine\ORM\PersistentCollection {#4076 …} +awards: Doctrine\ORM\PersistentCollection {#4074 …} +subscribedCategories: Doctrine\ORM\PersistentCollection {#4072 …} +categories: Doctrine\ORM\PersistentCollection {#4071 …} -id: 5835 -password: "$2y$13$/0ECxSzDnJN92aSFqdmLL.rBetZbWXolSrH9fzhaWu4zwzjKeCSFi" -totpSecret: null -totpBackupCodes: [] -oAuth2UserConsents: Doctrine\ORM\PersistentCollection {#4064 …} +apId: "Susan_B_Good@discuss.tchncs.de" +apProfileId: "https://discuss.tchncs.de/u/Susan_B_Good" +apPublicUrl: "https://discuss.tchncs.de/u/Susan_B_Good" +apFollowersUrl: null +apInboxUrl: "https://discuss.tchncs.de/inbox" +apDomain: "discuss.tchncs.de" +apPreferredUsername: "Susan_B_Good" +apDiscoverable: true +apManuallyApprovesFollowers: false +privateKey: null +publicKey: null +apFetchedAt: DateTime @1689070487 {#4024 : 2023-07-11 12:14:47.0 +02:00 } +apDeletedAt: null +apTimeoutAt: null +visibility: "visible " +createdAt: DateTimeImmutable @1687249795 {#4022 : 2023-06-20 10:29:55.0 +02:00 } } +entry: App\Entity\Entry {#2412} +magazine: App\Entity\Magazine {#264} +image: null +parent: App\Entity\EntryComment {#4048 +user: Proxies\__CG__\App\Entity\User {#1978 …2} +entry: App\Entity\Entry {#2412} +magazine: App\Entity\Magazine {#264} +image: null +parent: App\Entity\EntryComment {#4020 +user: App\Entity\User {#3968} +entry: App\Entity\Entry {#2412} +magazine: App\Entity\Magazine {#264} +image: null +parent: null +root: null +body: "I’m assuming that those "v"s are meters and not constant voltage sources. A 2.4v zener does NOT have exactly 2.4v across it. A 1.2 v supply will not be precisely 1.2v. Both will also vary with time and temperature. So, in practice there WILL be a dc component across the sensor - which will destroy it." +lang: "en" +isAdult: false +favouriteCount: 0 +score: 0 +lastActive: DateTime @1688761531 {#4029 : 2023-07-07 22:25:31.0 +02:00 } +ip: null +tags: null +mentions: [ "@macusking@discuss.tchncs.de" ] +children: Doctrine\ORM\PersistentCollection {#4018 …} +nested: Doctrine\ORM\PersistentCollection {#4016 …} +votes: Doctrine\ORM\PersistentCollection {#4014 …} +reports: Doctrine\ORM\PersistentCollection {#4012 …} +favourites: Doctrine\ORM\PersistentCollection {#3980 …} +notifications: Doctrine\ORM\PersistentCollection {#3984 …} -id: 8469 -bodyTs: "'1.2':28,35 '2.4':16,23 'across':25,54 'also':39 'assum':3 'compon':53 'constant':12 'dc':52 'destroy':59 'exact':22 'm':2 'meter':9 'practic':47 'precis':34 'sensor':56 'sourc':14 'suppli':30 'temperatur':44 'time':42 'v':6,17,24,29,36 'vari':40 'voltag':13 'zener':18" +ranking: 0 +commentCount: 0 +upVotes: 0 +downVotes: 0 +visibility: "visible " +apId: "https://discuss.tchncs.de/comment/661762" +editedAt: null +createdAt: DateTimeImmutable @1688586156 {#3965 : 2023-07-05 21:42:36.0 +02:00 } } +root: App\Entity\EntryComment {#4020} +body: "Thank you. Do you recommend me something (circuit) else? The 2.4v zener would provide about 2.4v. To keep 1.2V exactly half of the zener produced by the zener, I was considering split its voltage with 2 x 10k resistor in series and feed into an opamp in buffer configuration, so even it the 2.4 reference changes a little bit, the other side of circuit would be always zener / 2." +lang: "en" +isAdult: false +favouriteCount: 0 +score: 0 +lastActive: DateTime @1688587916 {#4043 : 2023-07-05 22:11:56.0 +02:00 } +ip: null +tags: null +mentions: [ "@macusking@discuss.tchncs.de" "@Susan_B_Good@discuss.tchncs.de" ] +children: Doctrine\ORM\PersistentCollection {#4051 …} +nested: Doctrine\ORM\PersistentCollection {#4053 …} +votes: Doctrine\ORM\PersistentCollection {#4055 …} +reports: Doctrine\ORM\PersistentCollection {#4036 …} +favourites: Doctrine\ORM\PersistentCollection {#4034 …} +notifications: Doctrine\ORM\PersistentCollection {#4032 …} -id: 8472 -bodyTs: "'1.2':21 '10k':41 '2':39,72 '2.4':11,17,57 'alway':70 'bit':62 'buffer':51 'chang':59 'circuit':8,67 'configur':52 'consid':34 'els':9 'even':54 'exact':23 'feed':46 'half':24 'keep':20 'littl':61 'opamp':49 'produc':28 'provid':15 'recommend':5 'refer':58 'resistor':42 'seri':44 'side':65 'someth':7 'split':35 'thank':1 'v':12,18,22 'voltag':37 'would':14,68 'x':40 'zener':13,27,31,71" +ranking: 0 +commentCount: 0 +upVotes: 0 +downVotes: 0 +visibility: "visible " +apId: "https://discuss.tchncs.de/comment/662713" +editedAt: DateTimeImmutable @1688588351 {#4040 : 2023-07-05 22:19:11.0 +02:00 } +createdAt: DateTimeImmutable @1688587916 {#4038 : 2023-07-05 22:11:56.0 +02:00 } } +root: App\Entity\EntryComment {#4020} +body: "How I would do it is to use two digital IO pins on the processor to generate the reference square wave. Put the sensor plus a series precision resistor between them and just pull one IO pin high as the other is pulled low and then swap them. That presumes that IO pins can both source and sink IO current. Then take the junction between the two to an Analogue in pin. You get two measurements each cycle. Use a lookup table of values and interpolate between them. If you wanted more precision - add more series resistors of different values covering the range of humidity that you want to sense, going to different IO pins. So you can choose the IO pin pair that brings the centre point between sensor and resistor closest to the mid-voltage point. It’s effectively a balanced half bridge arrangement - using the precision of the resistors to determine overall measurement precision. OK it ties up several IO pins - but microcontrollers are so cheap, I’d probably just dedicate one to this sensor and that’s all that it would do." +lang: "en" +isAdult: false +favouriteCount: 1 +score: 0 +lastActive: DateTime @1688622526 {#4098 : 2023-07-06 07:48:46.0 +02:00 } +ip: null +tags: null +mentions: [ "@macusking@discuss.tchncs.de" "@Susan_B_Good@discuss.tchncs.de" ] +children: Doctrine\ORM\PersistentCollection {#4095 …} +nested: Doctrine\ORM\PersistentCollection {#4092 …} +votes: Doctrine\ORM\PersistentCollection {#4089 …} +reports: Doctrine\ORM\PersistentCollection {#4104 …} +favourites: Doctrine\ORM\PersistentCollection {#4106 …} +notifications: Doctrine\ORM\PersistentCollection {#4108 …} -id: 8568 -bodyTs: "'add':94 'analogu':70 'arrang':147 'balanc':144 'bridg':146 'bring':125 'centr':127 'cheap':170 'choos':119 'closest':133 'cover':101 'current':60 'cycl':78 'd':172 'dedic':175 'determin':155 'differ':99,113 'digit':10 'effect':142 'generat':17 'get':74 'go':111 'half':145 'high':38 'humid':105 'interpol':86 'io':11,36,52,59,114,121,164 'junction':64 'lookup':81 'low':44 'measur':76,157 'microcontrol':167 'mid':137 'mid-voltag':136 'ok':159 'one':35,176 'overal':156 'pair':123 'pin':12,37,53,72,115,122,165 'plus':25 'point':128,139 'precis':28,93,150,158 'presum':50 'probabl':173 'processor':15 'pull':34,43 'put':22 'rang':103 'refer':19 'resistor':29,97,132,153 'sens':110 'sensor':24,130,179 'seri':27,96 'sever':163 'sink':58 'sourc':56 'squar':20 'swap':47 'tabl':82 'take':62 'tie':161 'two':9,67,75 'use':8,79,148 'valu':84,100 'voltag':138 'want':91,108 'wave':21 'would':3,186" +ranking: 0 +commentCount: 0 +upVotes: 0 +downVotes: 0 +visibility: "visible " +apId: "https://discuss.tchncs.de/comment/678173" +editedAt: null +createdAt: DateTimeImmutable @1688622526 {#4101 : 2023-07-06 07:48:46.0 +02:00 } } +root: App\Entity\EntryComment {#4020} +body: "Thank you. I’ll try this approach!" +lang: "en" +isAdult: false +favouriteCount: 0 +score: 0 +lastActive: DateTime @1688761530 {#4120 : 2023-07-07 22:25:30.0 +02:00 } +ip: null +tags: null +mentions: [ "@macusking@discuss.tchncs.de" "@Susan_B_Good@discuss.tchncs.de" ] +children: Doctrine\ORM\PersistentCollection {#4117 …} +nested: Doctrine\ORM\PersistentCollection {#4114 …} +votes: Doctrine\ORM\PersistentCollection {#4112 …} +reports: Doctrine\ORM\PersistentCollection {#4126 …} +favourites: Doctrine\ORM\PersistentCollection {#4128 …} +notifications: Doctrine\ORM\PersistentCollection {#4130 …} -id: 9042 -bodyTs: "'approach':7 'll':4 'thank':1 'tri':5" +ranking: 0 +commentCount: 0 +upVotes: 0 +downVotes: 0 +visibility: "visible " +apId: "https://discuss.tchncs.de/comment/749520" +editedAt: null +createdAt: DateTimeImmutable @1688761530 {#4123 : 2023-07-07 22:25:30.0 +02:00 } } +nestedComments: [] +level: 4 +view: "tree" -entryCommentRepository: App\Repository\EntryCommentRepository {#555 …} -twig: Twig\Environment {#1252 …} -security: Symfony\Bundle\SecurityBundle\Security {#1101 …} -cache: Symfony\Component\Cache\Adapter\TraceableTagAwareAdapter {#600 …} -requestStack: Symfony\Component\HttpFoundation\RequestStack {#1328 …} } |
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Input props | [ "label" => "Sidebar position" "settingsKey" => "KBIN_GENERAL_SIDEBAR_POSITION" "values" => [ [ "name" => "Left" "value" => "LEFT" ] [ "name" => "Right" "value" => "RIGHT" ] ] "defaultValue" => "RIGHT" ] |
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Attributes | [] |
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Component | App\Twig\Components\SettingsRowEnumComponent {#6804 +label: "Sidebar position" +help: "" +settingsKey: "KBIN_GENERAL_SIDEBAR_POSITION" +values: [ [ "name" => "Left" "value" => "LEFT" ] [ "name" => "Right" "value" => "RIGHT" ] ] +defaultValue: "RIGHT" +reloadRequired: true } |
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Input props | [ "label" => "Dynamic lists" "settingsKey" => "KBIN_GENERAL_DYNAMIC_LISTS" ] |
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Attributes | [] |
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Component | App\Twig\Components\SettingsRowSwitchComponent {#6868 +label: "Dynamic lists" +help: "" +settingsKey: "KBIN_GENERAL_DYNAMIC_LISTS" +defaultValue: false +reloadRequired: true } |
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Attributes | [] |
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Component | App\Twig\Components\SettingsRowSwitchComponent {#6933 +label: "Rounded edges" +help: "" +settingsKey: "KBIN_GENERAL_ROUNDED_EDGES" +defaultValue: false +reloadRequired: true } |
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Input props | [ "label" => "Infinite scrolling" "help" => "Automatically load more content when you reach the bottom of the page." "settingsKey" => "KBIN_GENERAL_INFINITE_SCROLL" ] |
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Attributes | [] |
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Component | App\Twig\Components\SettingsRowSwitchComponent {#6989 +label: "Infinite scrolling" +help: "Automatically load more content when you reach the bottom of the page." +settingsKey: "KBIN_GENERAL_INFINITE_SCROLL" +defaultValue: false +reloadRequired: true } |
settings_row_switch | App\Twig\Components\SettingsRowSwitchComponent | 12.0 MiB | 0.13 ms | |
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Input props | [ "label" => "Sticky navbar" "help" => "The navbar will stick to the top of the page when you scroll down." "settingsKey" => "KBIN_GENERAL_FIXED_NAVBAR" ] |
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Attributes | [] |
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Component | App\Twig\Components\SettingsRowSwitchComponent {#7048 +label: "Sticky navbar" +help: "The navbar will stick to the top of the page when you scroll down." +settingsKey: "KBIN_GENERAL_FIXED_NAVBAR" +defaultValue: false +reloadRequired: true } |
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Attributes | [] |
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Component | App\Twig\Components\SettingsRowSwitchComponent {#7104 +label: "Show top bar" +help: "" +settingsKey: "KBIN_GENERAL_TOPBAR" +defaultValue: false +reloadRequired: true } |
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Input props | [ "label" => "Turbo mode (experimental)" "settingsKey" => "KBIN_GENERAL_TURBO" ] |
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Attributes | [] |
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Component | App\Twig\Components\SettingsRowSwitchComponent {#7160 +label: "Turbo mode (experimental)" +help: "" +settingsKey: "KBIN_GENERAL_TURBO" +defaultValue: false +reloadRequired: true } |
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Input props | [ "label" => "Mark new comments" "settingsKey" => "KBIN_MARK_NEW_COMMENTS" ] |
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Attributes | [] |
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Component | App\Twig\Components\UserSettingsRowSwitchComponent {#7218 +label: "Mark new comments" +help: "" +settingsKey: "KBIN_MARK_NEW_COMMENTS" +defaultValue: false +reloadRequired: true } |
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Input props | [ "label" => "Show "Support Us" block" "settingsKey" => "KBIN_GENERAL_SUPPORT_US_BLOCK" "defaultValue" => true ] |
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Attributes | [] |
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Component | App\Twig\Components\SettingsRowSwitchComponent {#7281 +label: "Show "Support Us" block" +help: "" +settingsKey: "KBIN_GENERAL_SUPPORT_US_BLOCK" +defaultValue: true +reloadRequired: true } |
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Input props | [ "label" => "Show subscribed users" "settingsKey" => "KBIN_SUB_CHANNEL_USERS" ] |
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Attributes | [] |
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Component | App\Twig\Components\UserSettingsRowSwitchComponent {#2924 +label: "Show subscribed users" +help: "" +settingsKey: "KBIN_SUB_CHANNEL_USERS" +defaultValue: false +reloadRequired: true } |
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Input props | [ "label" => "Show subscribed magazines" "settingsKey" => "KBIN_SUB_CHANNEL_MAGAZINES" ] |
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Attributes | [] |
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Component | App\Twig\Components\UserSettingsRowSwitchComponent {#5247 +label: "Show subscribed magazines" +help: "" +settingsKey: "KBIN_SUB_CHANNEL_MAGAZINES" +defaultValue: false +reloadRequired: true } |
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Input props | [ "label" => "Show subscribed domains" "settingsKey" => "KBIN_SUB_CHANNEL_DOMAINS" ] |
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Attributes | [] |
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Component | App\Twig\Components\UserSettingsRowSwitchComponent {#7259 +label: "Show subscribed domains" +help: "" +settingsKey: "KBIN_SUB_CHANNEL_DOMAINS" +defaultValue: false +reloadRequired: true } |
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Input props | [ "label" => "Auto media preview" "help" => "Automatically expand media previews." "settingsKey" => "KBIN_ENTRIES_SHOW_PREVIEW" ] |
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Attributes | [] |
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Component | App\Twig\Components\SettingsRowSwitchComponent {#7354 +label: "Auto media preview" +help: "Automatically expand media previews." +settingsKey: "KBIN_ENTRIES_SHOW_PREVIEW" +defaultValue: false +reloadRequired: true } |
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Input props | [ "label" => "Compact view" "settingsKey" => "KBIN_ENTRIES_COMPACT" ] |
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Attributes | [] |
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Component | App\Twig\Components\SettingsRowSwitchComponent {#7410 +label: "Compact view" +help: "" +settingsKey: "KBIN_ENTRIES_COMPACT" +defaultValue: false +reloadRequired: true } |
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Input props | [ "label" => "Show users’ avatars" "settingsKey" => "KBIN_ENTRIES_SHOW_USERS_AVATARS" ] |
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Component | App\Twig\Components\SettingsRowSwitchComponent {#7466 +label: "Show users’ avatars" +help: "" +settingsKey: "KBIN_ENTRIES_SHOW_USERS_AVATARS" +defaultValue: false +reloadRequired: true } |
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Component | App\Twig\Components\SettingsRowSwitchComponent {#7522 +label: "Show magazines’ icons" +help: "" +settingsKey: "KBIN_ENTRIES_SHOW_MAGAZINES_ICONS" +defaultValue: false +reloadRequired: true } |
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Input props | [ "label" => "Show thumbnails" "settingsKey" => "KBIN_ENTRIES_SHOW_THUMBNAILS" "defaultValue" => true ] |
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Attributes | [] |
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Component | App\Twig\Components\SettingsRowSwitchComponent {#7578 +label: "Show thumbnails" +help: "" +settingsKey: "KBIN_ENTRIES_SHOW_THUMBNAILS" +defaultValue: true +reloadRequired: true } |
settings_row_switch | App\Twig\Components\SettingsRowSwitchComponent | 12.0 MiB | 0.16 ms | |
---|---|---|---|---|
Input props | [ "label" => "Auto media preview" "help" => "Automatically expand media previews." "settingsKey" => "KBIN_POSTS_SHOW_PREVIEW" ] |
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Attributes | [] |
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Component | App\Twig\Components\SettingsRowSwitchComponent {#7634 +label: "Auto media preview" +help: "Automatically expand media previews." +settingsKey: "KBIN_POSTS_SHOW_PREVIEW" +defaultValue: false +reloadRequired: true } |
settings_row_switch | App\Twig\Components\SettingsRowSwitchComponent | 12.0 MiB | 0.13 ms | |
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Input props | [ "label" => "Show users’ avatars" "settingsKey" => "KBIN_POSTS_SHOW_USERS_AVATARS" "defaultValue" => true ] |
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Attributes | [] |
|||
Component | App\Twig\Components\SettingsRowSwitchComponent {#7690 +label: "Show users’ avatars" +help: "" +settingsKey: "KBIN_POSTS_SHOW_USERS_AVATARS" +defaultValue: true +reloadRequired: true } |
settings_row_enum | App\Twig\Components\SettingsRowEnumComponent | 12.0 MiB | 0.16 ms | |
---|---|---|---|---|
Input props | [ "label" => "Comment reply position" "help" => "Display the comment reply form either at the top or bottom of the page. When 'infinite scroll' is enabled the position will always appear at the top." "settingsKey" => "KBIN_COMMENTS_REPLY_POSITION" "values" => [ [ "name" => "top" "value" => "TOP" ] [ "name" => "bottom" "value" => "BOTTOM" ] ] "defaultValue" => "TOP" ] |
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Attributes | [] |
|||
Component | App\Twig\Components\SettingsRowEnumComponent {#7746 +label: "Comment reply position" +help: "Display the comment reply form either at the top or bottom of the page. When 'infinite scroll' is enabled the position will always appear at the top." +settingsKey: "KBIN_COMMENTS_REPLY_POSITION" +values: [ [ "name" => "top" "value" => "TOP" ] [ "name" => "bottom" "value" => "BOTTOM" ] ] +defaultValue: "TOP" +reloadRequired: true } |
settings_row_switch | App\Twig\Components\SettingsRowSwitchComponent | 12.0 MiB | 0.20 ms | |
---|---|---|---|---|
Input props | [ "label" => "Show Comment Avatars" "help" => "Display/hide user avatars when viewing comments on a single thread or post." "settingsKey" => "KBIN_COMMENTS_SHOW_USER_AVATAR" "defaultValue" => true ] |
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Attributes | [] |
|||
Component | App\Twig\Components\SettingsRowSwitchComponent {#7804 +label: "Show Comment Avatars" +help: "Display/hide user avatars when viewing comments on a single thread or post." +settingsKey: "KBIN_COMMENTS_SHOW_USER_AVATAR" +defaultValue: true +reloadRequired: true } |
user_actions | App\Twig\Components\UserActionsComponent | 12.0 MiB | 0.46 ms | |
---|---|---|---|---|
Input props | [ "user" => Proxies\__CG__\App\Entity\User {#1978 +avatar: null +cover: null +email: "macusking@discuss.tchncs.de" +username: "@macusking@discuss.tchncs.de" +roles: [] +followersCount: 0 +homepage: "front" +about: null +lastActive: DateTime @1688762258 {#1515 : 2023-07-07 22:37:38.0 +02:00 } +markedForDeletionAt: null +fields: null +oauthGithubId: null +oauthGoogleId: null +oauthFacebookId: null +oauthKeycloakId: null +hideAdult: true +showSubscribedUsers: true +showSubscribedMagazines: true +showSubscribedDomains: true +preferredLanguages: [] +featuredMagazines: null +showProfileSubscriptions: true +showProfileFollowings: true +markNewComments: false +notifyOnNewEntry: false +notifyOnNewEntryReply: false +notifyOnNewEntryCommentReply: false +notifyOnNewPost: false +notifyOnNewPostReply: false +notifyOnNewPostCommentReply: false +addMentionsEntries: false +addMentionsPosts: true +isBanned: false +isVerified: false +isDeleted: false +isBot: false +spamProtection: true +customCss: null +ignoreMagazinesCustomCss: false +moderatorTokens: Doctrine\ORM\PersistentCollection {#1519 …} +magazineOwnershipRequests: Doctrine\ORM\PersistentCollection {#1517 …} +moderatorRequests: Doctrine\ORM\PersistentCollection {#1623 …} +entries: Doctrine\ORM\PersistentCollection {#1406 …} +entryVotes: Doctrine\ORM\PersistentCollection {#1713 …} +entryComments: Doctrine\ORM\PersistentCollection {#1710 …} +entryCommentVotes: Doctrine\ORM\PersistentCollection {#1474 …} +posts: Doctrine\ORM\PersistentCollection {#1745 …} +postVotes: Doctrine\ORM\PersistentCollection {#1485 …} +postComments: Doctrine\ORM\PersistentCollection {#1759 …} +postCommentVotes: Doctrine\ORM\PersistentCollection {#1637 …} +subscriptions: Doctrine\ORM\PersistentCollection {#1475 …} +subscribedDomains: Doctrine\ORM\PersistentCollection {#1636 …} +follows: Doctrine\ORM\PersistentCollection {#1409 …} +followers: Doctrine\ORM\PersistentCollection {#1624 …} +blocks: Doctrine\ORM\PersistentCollection {#1425 …} +blockers: Doctrine\ORM\PersistentCollection {#1441 …} +blockedMagazines: Doctrine\ORM\PersistentCollection {#1460 …} +blockedDomains: Doctrine\ORM\PersistentCollection {#1439 …} +reports: Doctrine\ORM\PersistentCollection {#1416 …} +favourites: Doctrine\ORM\PersistentCollection {#1430 …} +violations: Doctrine\ORM\PersistentCollection {#1694 …} +notifications: Doctrine\ORM\PersistentCollection {#1700 …} +awards: Doctrine\ORM\PersistentCollection {#1434 …} +subscribedCategories: Doctrine\ORM\PersistentCollection {#1610 …} +categories: Doctrine\ORM\PersistentCollection {#1640 …} -id: 19399 -password: "$2y$13$GtA6yJr0SHJf/70Uom7/xuVlLxced/g77qbWw1CPRQVbQEuUFzyGS" -totpSecret: null -totpBackupCodes: [] -oAuth2UserConsents: Doctrine\ORM\PersistentCollection {#1669 …} +apId: "macusking@discuss.tchncs.de" +apProfileId: "https://discuss.tchncs.de/u/macusking" +apPublicUrl: "https://discuss.tchncs.de/u/macusking" +apFollowersUrl: null +apInboxUrl: "https://discuss.tchncs.de/inbox" +apDomain: "discuss.tchncs.de" +apPreferredUsername: "macusking" +apDiscoverable: true +apManuallyApprovesFollowers: false +privateKey: null +publicKey: null +apFetchedAt: DateTime @1688761497 {#1516 : 2023-07-07 22:24:57.0 +02:00 } +apDeletedAt: null +apTimeoutAt: null +visibility: "visible " +createdAt: DateTimeImmutable @1688582502 {#1518 : 2023-07-05 20:41:42.0 +02:00 } +__isInitialized__: true …2 } ] |
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Attributes | [] |
|||
Component | App\Twig\Components\UserActionsComponent {#7881 +user: Proxies\__CG__\App\Entity\User {#1978 +avatar: null +cover: null +email: "macusking@discuss.tchncs.de" +username: "@macusking@discuss.tchncs.de" +roles: [] +followersCount: 0 +homepage: "front" +about: null +lastActive: DateTime @1688762258 {#1515 : 2023-07-07 22:37:38.0 +02:00 } +markedForDeletionAt: null +fields: null +oauthGithubId: null +oauthGoogleId: null +oauthFacebookId: null +oauthKeycloakId: null +hideAdult: true +showSubscribedUsers: true +showSubscribedMagazines: true +showSubscribedDomains: true +preferredLanguages: [] +featuredMagazines: null +showProfileSubscriptions: true +showProfileFollowings: true +markNewComments: false +notifyOnNewEntry: false +notifyOnNewEntryReply: false +notifyOnNewEntryCommentReply: false +notifyOnNewPost: false +notifyOnNewPostReply: false +notifyOnNewPostCommentReply: false +addMentionsEntries: false +addMentionsPosts: true +isBanned: false +isVerified: false +isDeleted: false +isBot: false +spamProtection: true +customCss: null +ignoreMagazinesCustomCss: false +moderatorTokens: Doctrine\ORM\PersistentCollection {#1519 …} +magazineOwnershipRequests: Doctrine\ORM\PersistentCollection {#1517 …} +moderatorRequests: Doctrine\ORM\PersistentCollection {#1623 …} +entries: Doctrine\ORM\PersistentCollection {#1406 …} +entryVotes: Doctrine\ORM\PersistentCollection {#1713 …} +entryComments: Doctrine\ORM\PersistentCollection {#1710 …} +entryCommentVotes: Doctrine\ORM\PersistentCollection {#1474 …} +posts: Doctrine\ORM\PersistentCollection {#1745 …} +postVotes: Doctrine\ORM\PersistentCollection {#1485 …} +postComments: Doctrine\ORM\PersistentCollection {#1759 …} +postCommentVotes: Doctrine\ORM\PersistentCollection {#1637 …} +subscriptions: Doctrine\ORM\PersistentCollection {#1475 …} +subscribedDomains: Doctrine\ORM\PersistentCollection {#1636 …} +follows: Doctrine\ORM\PersistentCollection {#1409 …} +followers: Doctrine\ORM\PersistentCollection {#1624 …} +blocks: Doctrine\ORM\PersistentCollection {#1425 …} +blockers: Doctrine\ORM\PersistentCollection {#1441 …} +blockedMagazines: Doctrine\ORM\PersistentCollection {#1460 …} +blockedDomains: Doctrine\ORM\PersistentCollection {#1439 …} +reports: Doctrine\ORM\PersistentCollection {#1416 …} +favourites: Doctrine\ORM\PersistentCollection {#1430 …} +violations: Doctrine\ORM\PersistentCollection {#1694 …} +notifications: Doctrine\ORM\PersistentCollection {#1700 …} +awards: Doctrine\ORM\PersistentCollection {#1434 …} +subscribedCategories: Doctrine\ORM\PersistentCollection {#1610 …} +categories: Doctrine\ORM\PersistentCollection {#1640 …} -id: 19399 -password: "$2y$13$GtA6yJr0SHJf/70Uom7/xuVlLxced/g77qbWw1CPRQVbQEuUFzyGS" -totpSecret: null -totpBackupCodes: [] -oAuth2UserConsents: Doctrine\ORM\PersistentCollection {#1669 …} +apId: "macusking@discuss.tchncs.de" +apProfileId: "https://discuss.tchncs.de/u/macusking" +apPublicUrl: "https://discuss.tchncs.de/u/macusking" +apFollowersUrl: null +apInboxUrl: "https://discuss.tchncs.de/inbox" +apDomain: "discuss.tchncs.de" +apPreferredUsername: "macusking" +apDiscoverable: true +apManuallyApprovesFollowers: false +privateKey: null +publicKey: null +apFetchedAt: DateTime @1688761497 {#1516 : 2023-07-07 22:24:57.0 +02:00 } +apDeletedAt: null +apTimeoutAt: null +visibility: "visible " +createdAt: DateTimeImmutable @1688582502 {#1518 : 2023-07-05 20:41:42.0 +02:00 } +__isInitialized__: true …2 } } |
date | App\Twig\Components\DateComponent | 12.0 MiB | 2.39 ms | |
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Input props | [ "date" => DateTimeImmutable @1688582501 {#1858 : 2023-07-05 20:41:41.0 +02:00 } ] |
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Attributes | [] |
|||
Component | App\Twig\Components\DateComponent {#7942 +date: DateTimeImmutable @1688582501 {#1858 : 2023-07-05 20:41:41.0 +02:00 } } |
magazine_box | App\Twig\Components\MagazineBoxComponent | 12.0 MiB | 188.74 ms | |
---|---|---|---|---|
Input props | [ "magazine" => App\Entity\Magazine {#264 +icon: Proxies\__CG__\App\Entity\Image {#245 …} +name: "askelectronics@discuss.tchncs.de" +title: "askelectronics" +description: """ **For questions about component-level electronic circuits, tools and equipment.**\n \n Rules\n -----\n \n 1: Be nice.\n \n 2: Be on-topic (eg: *Electronic*, not *electrical*).\n \n 3: No commercial stuff, buying, selling or valuations.\n \n 4: Be safe.\n \n --- """ +rules: null +subscriptionsCount: 1 +entryCount: 154 +entryCommentCount: 1230 +postCount: 1 +postCommentCount: 4 +isAdult: false +customCss: null +lastActive: DateTime @1729413608 {#274 : 2024-10-20 10:40:08.0 +02:00 } +markedForDeletionAt: null +tags: null +moderators: Doctrine\ORM\PersistentCollection {#236 …} +ownershipRequests: Doctrine\ORM\PersistentCollection {#232 …} +moderatorRequests: Doctrine\ORM\PersistentCollection {#221 …} +entries: Doctrine\ORM\PersistentCollection {#179 …} +posts: Doctrine\ORM\PersistentCollection {#137 …} +subscriptions: Doctrine\ORM\PersistentCollection {#199 …} +bans: Doctrine\ORM\PersistentCollection {#116 …} +reports: Doctrine\ORM\PersistentCollection {#102 …} +badges: Doctrine\ORM\PersistentCollection {#80 …} +logs: Doctrine\ORM\PersistentCollection {#70 …} +awards: Doctrine\ORM\PersistentCollection {#1360 …} +categories: Doctrine\ORM\PersistentCollection {#1792 …} -id: 11 +apId: "askelectronics@discuss.tchncs.de" +apProfileId: "https://discuss.tchncs.de/c/askelectronics" +apPublicUrl: "https://discuss.tchncs.de/c/askelectronics" +apFollowersUrl: "https://discuss.tchncs.de/c/askelectronics/followers" +apInboxUrl: "https://discuss.tchncs.de/inbox" +apDomain: "discuss.tchncs.de" +apPreferredUsername: "askelectronics" +apDiscoverable: true +apManuallyApprovesFollowers: null +privateKey: null +publicKey: null +apFetchedAt: DateTime @1727247714 {#268 : 2024-09-25 09:01:54.0 +02:00 } +apDeletedAt: null +apTimeoutAt: null +visibility: "visible " +createdAt: DateTimeImmutable @1687144409 {#270 : 2023-06-19 05:13:29.0 +02:00 } } "showSectionTitle" => true ] |
|||
Attributes | [] |
|||
Component | App\Twig\Components\MagazineBoxComponent {#7998 +magazine: App\Entity\Magazine {#264 +icon: Proxies\__CG__\App\Entity\Image {#245 …} +name: "askelectronics@discuss.tchncs.de" +title: "askelectronics" +description: """ **For questions about component-level electronic circuits, tools and equipment.**\n \n Rules\n -----\n \n 1: Be nice.\n \n 2: Be on-topic (eg: *Electronic*, not *electrical*).\n \n 3: No commercial stuff, buying, selling or valuations.\n \n 4: Be safe.\n \n --- """ +rules: null +subscriptionsCount: 1 +entryCount: 154 +entryCommentCount: 1230 +postCount: 1 +postCommentCount: 4 +isAdult: false +customCss: null +lastActive: DateTime @1729413608 {#274 : 2024-10-20 10:40:08.0 +02:00 } +markedForDeletionAt: null +tags: null +moderators: Doctrine\ORM\PersistentCollection {#236 …} +ownershipRequests: Doctrine\ORM\PersistentCollection {#232 …} +moderatorRequests: Doctrine\ORM\PersistentCollection {#221 …} +entries: Doctrine\ORM\PersistentCollection {#179 …} +posts: Doctrine\ORM\PersistentCollection {#137 …} +subscriptions: Doctrine\ORM\PersistentCollection {#199 …} +bans: Doctrine\ORM\PersistentCollection {#116 …} +reports: Doctrine\ORM\PersistentCollection {#102 …} +badges: Doctrine\ORM\PersistentCollection {#80 …} +logs: Doctrine\ORM\PersistentCollection {#70 …} +awards: Doctrine\ORM\PersistentCollection {#1360 …} +categories: Doctrine\ORM\PersistentCollection {#1792 …} -id: 11 +apId: "askelectronics@discuss.tchncs.de" +apProfileId: "https://discuss.tchncs.de/c/askelectronics" +apPublicUrl: "https://discuss.tchncs.de/c/askelectronics" +apFollowersUrl: "https://discuss.tchncs.de/c/askelectronics/followers" +apInboxUrl: "https://discuss.tchncs.de/inbox" +apDomain: "discuss.tchncs.de" +apPreferredUsername: "askelectronics" +apDiscoverable: true +apManuallyApprovesFollowers: null +privateKey: null +publicKey: null +apFetchedAt: DateTime @1727247714 {#268 : 2024-09-25 09:01:54.0 +02:00 } +apDeletedAt: null +apTimeoutAt: null +visibility: "visible " +createdAt: DateTimeImmutable @1687144409 {#270 : 2023-06-19 05:13:29.0 +02:00 } } +showCover: true +showDescription: true +showRules: true +showSubscribeButton: true +showInfo: true +showMeta: true +showSectionTitle: true +stretchedLink: true } |
magazine_sub | App\Twig\Components\MagazineSubComponent | 12.0 MiB | 0.45 ms | |
---|---|---|---|---|
Input props | [ "magazine" => App\Entity\Magazine {#264 +icon: Proxies\__CG__\App\Entity\Image {#245 …} +name: "askelectronics@discuss.tchncs.de" +title: "askelectronics" +description: """ **For questions about component-level electronic circuits, tools and equipment.**\n \n Rules\n -----\n \n 1: Be nice.\n \n 2: Be on-topic (eg: *Electronic*, not *electrical*).\n \n 3: No commercial stuff, buying, selling or valuations.\n \n 4: Be safe.\n \n --- """ +rules: null +subscriptionsCount: 1 +entryCount: 154 +entryCommentCount: 1230 +postCount: 1 +postCommentCount: 4 +isAdult: false +customCss: null +lastActive: DateTime @1729413608 {#274 : 2024-10-20 10:40:08.0 +02:00 } +markedForDeletionAt: null +tags: null +moderators: Doctrine\ORM\PersistentCollection {#236 …} +ownershipRequests: Doctrine\ORM\PersistentCollection {#232 …} +moderatorRequests: Doctrine\ORM\PersistentCollection {#221 …} +entries: Doctrine\ORM\PersistentCollection {#179 …} +posts: Doctrine\ORM\PersistentCollection {#137 …} +subscriptions: Doctrine\ORM\PersistentCollection {#199 …} +bans: Doctrine\ORM\PersistentCollection {#116 …} +reports: Doctrine\ORM\PersistentCollection {#102 …} +badges: Doctrine\ORM\PersistentCollection {#80 …} +logs: Doctrine\ORM\PersistentCollection {#70 …} +awards: Doctrine\ORM\PersistentCollection {#1360 …} +categories: Doctrine\ORM\PersistentCollection {#1792 …} -id: 11 +apId: "askelectronics@discuss.tchncs.de" +apProfileId: "https://discuss.tchncs.de/c/askelectronics" +apPublicUrl: "https://discuss.tchncs.de/c/askelectronics" +apFollowersUrl: "https://discuss.tchncs.de/c/askelectronics/followers" +apInboxUrl: "https://discuss.tchncs.de/inbox" +apDomain: "discuss.tchncs.de" +apPreferredUsername: "askelectronics" +apDiscoverable: true +apManuallyApprovesFollowers: null +privateKey: null +publicKey: null +apFetchedAt: DateTime @1727247714 {#268 : 2024-09-25 09:01:54.0 +02:00 } +apDeletedAt: null +apTimeoutAt: null +visibility: "visible " +createdAt: DateTimeImmutable @1687144409 {#270 : 2023-06-19 05:13:29.0 +02:00 } } ] |
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Attributes | [] |
|||
Component | App\Twig\Components\MagazineSubComponent {#8056 +magazine: App\Entity\Magazine {#264 +icon: Proxies\__CG__\App\Entity\Image {#245 …} +name: "askelectronics@discuss.tchncs.de" +title: "askelectronics" +description: """ **For questions about component-level electronic circuits, tools and equipment.**\n \n Rules\n -----\n \n 1: Be nice.\n \n 2: Be on-topic (eg: *Electronic*, not *electrical*).\n \n 3: No commercial stuff, buying, selling or valuations.\n \n 4: Be safe.\n \n --- """ +rules: null +subscriptionsCount: 1 +entryCount: 154 +entryCommentCount: 1230 +postCount: 1 +postCommentCount: 4 +isAdult: false +customCss: null +lastActive: DateTime @1729413608 {#274 : 2024-10-20 10:40:08.0 +02:00 } +markedForDeletionAt: null +tags: null +moderators: Doctrine\ORM\PersistentCollection {#236 …} +ownershipRequests: Doctrine\ORM\PersistentCollection {#232 …} +moderatorRequests: Doctrine\ORM\PersistentCollection {#221 …} +entries: Doctrine\ORM\PersistentCollection {#179 …} +posts: Doctrine\ORM\PersistentCollection {#137 …} +subscriptions: Doctrine\ORM\PersistentCollection {#199 …} +bans: Doctrine\ORM\PersistentCollection {#116 …} +reports: Doctrine\ORM\PersistentCollection {#102 …} +badges: Doctrine\ORM\PersistentCollection {#80 …} +logs: Doctrine\ORM\PersistentCollection {#70 …} +awards: Doctrine\ORM\PersistentCollection {#1360 …} +categories: Doctrine\ORM\PersistentCollection {#1792 …} -id: 11 +apId: "askelectronics@discuss.tchncs.de" +apProfileId: "https://discuss.tchncs.de/c/askelectronics" +apPublicUrl: "https://discuss.tchncs.de/c/askelectronics" +apFollowersUrl: "https://discuss.tchncs.de/c/askelectronics/followers" +apInboxUrl: "https://discuss.tchncs.de/inbox" +apDomain: "discuss.tchncs.de" +apPreferredUsername: "askelectronics" +apDiscoverable: true +apManuallyApprovesFollowers: null +privateKey: null +publicKey: null +apFetchedAt: DateTime @1727247714 {#268 : 2024-09-25 09:01:54.0 +02:00 } +apDeletedAt: null +apTimeoutAt: null +visibility: "visible " +createdAt: DateTimeImmutable @1687144409 {#270 : 2023-06-19 05:13:29.0 +02:00 } } } |
date | App\Twig\Components\DateComponent | 12.0 MiB | 0.15 ms | |
---|---|---|---|---|
Input props | [ "date" => DateTimeImmutable @1687144409 {#270 : 2023-06-19 05:13:29.0 +02:00 } ] |
|||
Attributes | [] |
|||
Component | App\Twig\Components\DateComponent {#8168 +date: DateTimeImmutable @1687144409 {#270 : 2023-06-19 05:13:29.0 +02:00 } } |
user_inline | App\Twig\Components\UserInlineComponent | 12.0 MiB | 24.51 ms | |
---|---|---|---|---|
Input props | [ "user" => Proxies\__CG__\App\Entity\User {#8227 +avatar: null +cover: null +email: "kbin@j0h.nl" +username: "Sprite_tm" +roles: [ "ROLE_ADMIN" ] +followersCount: 0 +homepage: "front" +about: "Hi! I'm Sprite_tm. You may know me from sites like https://spritesmods.com." +lastActive: DateTime @1707547382 {#8274 : 2024-02-10 07:43:02.0 +01:00 } +markedForDeletionAt: null +fields: null +oauthGithubId: null +oauthGoogleId: null +oauthFacebookId: null +oauthKeycloakId: null +hideAdult: true +showSubscribedUsers: true +showSubscribedMagazines: true +showSubscribedDomains: true +preferredLanguages: [] +featuredMagazines: null +showProfileSubscriptions: true +showProfileFollowings: true +markNewComments: false +notifyOnNewEntry: false +notifyOnNewEntryReply: false +notifyOnNewEntryCommentReply: false +notifyOnNewPost: false +notifyOnNewPostReply: false +notifyOnNewPostCommentReply: false +addMentionsEntries: false +addMentionsPosts: true +isBanned: false +isVerified: true +isDeleted: false +isBot: false +spamProtection: true +customCss: null +ignoreMagazinesCustomCss: false +moderatorTokens: Doctrine\ORM\PersistentCollection {#8276 …} +magazineOwnershipRequests: Doctrine\ORM\PersistentCollection {#8278 …} +moderatorRequests: Doctrine\ORM\PersistentCollection {#8280 …} +entries: Doctrine\ORM\PersistentCollection {#8282 …} +entryVotes: Doctrine\ORM\PersistentCollection {#8284 …} +entryComments: Doctrine\ORM\PersistentCollection {#8286 …} +entryCommentVotes: Doctrine\ORM\PersistentCollection {#8288 …} +posts: Doctrine\ORM\PersistentCollection {#8290 …} +postVotes: Doctrine\ORM\PersistentCollection {#8292 …} +postComments: Doctrine\ORM\PersistentCollection {#8294 …} +postCommentVotes: Doctrine\ORM\PersistentCollection {#8296 …} +subscriptions: Doctrine\ORM\PersistentCollection {#8298 …} +subscribedDomains: Doctrine\ORM\PersistentCollection {#8300 …} +follows: Doctrine\ORM\PersistentCollection {#8302 …} +followers: Doctrine\ORM\PersistentCollection {#8304 …} +blocks: Doctrine\ORM\PersistentCollection {#8306 …} +blockers: Doctrine\ORM\PersistentCollection {#8308 …} +blockedMagazines: Doctrine\ORM\PersistentCollection {#8310 …} +blockedDomains: Doctrine\ORM\PersistentCollection {#8312 …} +reports: Doctrine\ORM\PersistentCollection {#8314 …} +favourites: Doctrine\ORM\PersistentCollection {#8316 …} +violations: Doctrine\ORM\PersistentCollection {#8318 …} +notifications: Doctrine\ORM\PersistentCollection {#8320 …} +awards: Doctrine\ORM\PersistentCollection {#8322 …} +subscribedCategories: Doctrine\ORM\PersistentCollection {#8324 …} +categories: Doctrine\ORM\PersistentCollection {#8326 …} -id: 1 -password: "$2y$13$ZX7Aou2QOPRGkHPp4y5x8OWfxZMoT1BGH7bRLlPP7mwZFTkfiaPGG" -totpSecret: null -totpBackupCodes: [] -oAuth2UserConsents: Doctrine\ORM\PersistentCollection {#8328 …} +apId: null +apProfileId: null +apPublicUrl: null +apFollowersUrl: null +apInboxUrl: null +apDomain: null +apPreferredUsername: null +apDiscoverable: null +apManuallyApprovesFollowers: null +privateKey: """ -----BEGIN PRIVATE KEY-----\r\n MIIJQgIBADANBgkqhkiG9w0BAQEFAASCCSwwggkoAgEAAoICAQDleeotz5TBiMlC\r\n YsJYJHVNxjvnvt0qsQA282B7vdqBTbARfD49iKPiMIwgU2yhCI0oTSQwc2Zy9AQ+\r\n 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related_magazines | App\Twig\Components\RelatedMagazinesComponent | 12.0 MiB | 19.48 ms | |
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Input props | [ "magazine" => "askelectronics@discuss.tchncs.de" "tag" => null ] |
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Attributes | [] |
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Component | App\Twig\Components\RelatedMagazinesComponent {#8436 +limit: 4 +tag: null +magazine: "askelectronics@discuss.tchncs.de" +type: "magazine" +title: "related_magazines" +refreshedRandom: false -repository: App\Repository\MagazineRepository {#332 …} -cache: Symfony\Component\Cache\Adapter\TraceableTagAwareAdapter {#600 …} -twig: Twig\Environment {#1252 …} -requestStack: Symfony\Component\HttpFoundation\RequestStack {#1328 …} } |
active_users | App\Twig\Components\ActiveUsersComponent | 12.0 MiB | 0.26 ms | |
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Input props | [ "magazine" => App\Entity\Magazine {#264 +icon: Proxies\__CG__\App\Entity\Image {#245 …} +name: "askelectronics@discuss.tchncs.de" +title: "askelectronics" +description: """ **For questions about component-level electronic circuits, tools and equipment.**\n \n Rules\n -----\n \n 1: Be nice.\n \n 2: Be on-topic (eg: *Electronic*, not *electrical*).\n \n 3: No commercial stuff, buying, selling or valuations.\n \n 4: Be safe.\n \n --- """ +rules: null +subscriptionsCount: 1 +entryCount: 154 +entryCommentCount: 1230 +postCount: 1 +postCommentCount: 4 +isAdult: false +customCss: null +lastActive: DateTime @1729413608 {#274 : 2024-10-20 10:40:08.0 +02:00 } +markedForDeletionAt: null +tags: null +moderators: Doctrine\ORM\PersistentCollection {#236 …} +ownershipRequests: Doctrine\ORM\PersistentCollection {#232 …} +moderatorRequests: Doctrine\ORM\PersistentCollection {#221 …} +entries: Doctrine\ORM\PersistentCollection {#179 …} +posts: Doctrine\ORM\PersistentCollection {#137 …} +subscriptions: Doctrine\ORM\PersistentCollection {#199 …} +bans: Doctrine\ORM\PersistentCollection {#116 …} +reports: Doctrine\ORM\PersistentCollection {#102 …} +badges: Doctrine\ORM\PersistentCollection {#80 …} +logs: Doctrine\ORM\PersistentCollection {#70 …} +awards: Doctrine\ORM\PersistentCollection {#1360 …} +categories: Doctrine\ORM\PersistentCollection {#1792 …} -id: 11 +apId: "askelectronics@discuss.tchncs.de" +apProfileId: "https://discuss.tchncs.de/c/askelectronics" +apPublicUrl: "https://discuss.tchncs.de/c/askelectronics" +apFollowersUrl: "https://discuss.tchncs.de/c/askelectronics/followers" +apInboxUrl: "https://discuss.tchncs.de/inbox" +apDomain: "discuss.tchncs.de" +apPreferredUsername: "askelectronics" +apDiscoverable: true +apManuallyApprovesFollowers: null +privateKey: null +publicKey: null +apFetchedAt: DateTime @1727247714 {#268 : 2024-09-25 09:01:54.0 +02:00 } +apDeletedAt: null +apTimeoutAt: null +visibility: "visible " +createdAt: DateTimeImmutable @1687144409 {#270 : 2023-06-19 05:13:29.0 +02:00 } } ] |
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Attributes | [] |
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Component | App\Twig\Components\ActiveUsersComponent {#8523 +magazine: App\Entity\Magazine {#264 +icon: Proxies\__CG__\App\Entity\Image {#245 …} +name: "askelectronics@discuss.tchncs.de" +title: "askelectronics" +description: """ **For questions about component-level electronic circuits, tools and equipment.**\n \n Rules\n -----\n \n 1: Be nice.\n \n 2: Be on-topic (eg: *Electronic*, not *electrical*).\n \n 3: No commercial stuff, buying, selling or valuations.\n \n 4: Be safe.\n \n --- """ +rules: null +subscriptionsCount: 1 +entryCount: 154 +entryCommentCount: 1230 +postCount: 1 +postCommentCount: 4 +isAdult: false +customCss: null +lastActive: DateTime @1729413608 {#274 : 2024-10-20 10:40:08.0 +02:00 } +markedForDeletionAt: null +tags: null +moderators: Doctrine\ORM\PersistentCollection {#236 …} +ownershipRequests: Doctrine\ORM\PersistentCollection {#232 …} +moderatorRequests: Doctrine\ORM\PersistentCollection {#221 …} +entries: Doctrine\ORM\PersistentCollection {#179 …} +posts: Doctrine\ORM\PersistentCollection {#137 …} +subscriptions: Doctrine\ORM\PersistentCollection {#199 …} +bans: Doctrine\ORM\PersistentCollection {#116 …} +reports: Doctrine\ORM\PersistentCollection {#102 …} +badges: Doctrine\ORM\PersistentCollection {#80 …} +logs: Doctrine\ORM\PersistentCollection {#70 …} +awards: Doctrine\ORM\PersistentCollection {#1360 …} +categories: Doctrine\ORM\PersistentCollection {#1792 …} -id: 11 +apId: "askelectronics@discuss.tchncs.de" +apProfileId: "https://discuss.tchncs.de/c/askelectronics" +apPublicUrl: "https://discuss.tchncs.de/c/askelectronics" +apFollowersUrl: "https://discuss.tchncs.de/c/askelectronics/followers" +apInboxUrl: "https://discuss.tchncs.de/inbox" +apDomain: "discuss.tchncs.de" +apPreferredUsername: "askelectronics" +apDiscoverable: true +apManuallyApprovesFollowers: null +privateKey: null +publicKey: null +apFetchedAt: DateTime @1727247714 {#268 : 2024-09-25 09:01:54.0 +02:00 } +apDeletedAt: null +apTimeoutAt: null +visibility: "visible " +createdAt: DateTimeImmutable @1687144409 {#270 : 2023-06-19 05:13:29.0 +02:00 } } -userRepository: App\Repository\UserRepository {#603 …} -cache: Symfony\Component\Cache\Adapter\TraceableTagAwareAdapter {#600 …} -twig: Twig\Environment {#1252 …} -requestStack: Symfony\Component\HttpFoundation\RequestStack {#1328 …} } |
related_categories | App\Twig\Components\RelatedCategoriesComponent | 12.0 MiB | 1.71 ms | |
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Input props | [ "magazine" => "askelectronics@discuss.tchncs.de" "tag" => null ] |
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Attributes | [] |
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Component | App\Twig\Components\RelatedCategoriesComponent {#8582 +limit: 4 +tag: null +magazine: "askelectronics@discuss.tchncs.de" +type: "related" +title: "related_categories" +refreshedRandom: false -repository: App\Repository\CategoryRepository {#8583 …} -cache: Symfony\Component\Cache\Adapter\TraceableTagAwareAdapter {#600 …} -twig: Twig\Environment {#1252 …} -requestStack: Symfony\Component\HttpFoundation\RequestStack {#1328 …} } |
related_posts | App\Twig\Components\RelatedPostsComponent | 12.0 MiB | 1.84 ms | |
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Input props | [ "magazine" => "askelectronics@discuss.tchncs.de" "tag" => null ] |
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Attributes | [] |
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Component | App\Twig\Components\RelatedPostsComponent {#8653 +limit: 4 +tag: null +magazine: "askelectronics@discuss.tchncs.de" +type: "magazine" +post: null +title: "related_posts" +refreshedRandom: false -repository: App\Repository\PostRepository {#8652 …} -cache: Symfony\Component\Cache\Adapter\TraceableTagAwareAdapter {#600 …} -twig: Twig\Environment {#1252 …} -requestStack: Symfony\Component\HttpFoundation\RequestStack {#1328 …} -mentionManager: App\Service\MentionManager {#388 …} } |
related_entries | App\Twig\Components\RelatedEntriesComponent | 12.0 MiB | 5.98 ms | |
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Input props | [ "magazine" => "askelectronics@discuss.tchncs.de" "tag" => null ] |
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Attributes | [] |
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Component | App\Twig\Components\RelatedEntriesComponent {#8722 +limit: 4 +tag: null +magazine: "askelectronics@discuss.tchncs.de" +type: "magazine" +entry: null +title: "related_entries" +refreshedRandom: false -repository: App\Repository\EntryRepository {#269 …} -cache: Symfony\Component\Cache\Adapter\TraceableTagAwareAdapter {#600 …} -twig: Twig\Environment {#1252 …} -requestStack: Symfony\Component\HttpFoundation\RequestStack {#1328 …} -mentionManager: App\Service\MentionManager {#388 …} } |
support_us_block | App\Twig\Components\SupportUsBlock | 12.0 MiB | 0.33 ms | |
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Input props | [] |
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Attributes | [] |
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Component | App\Twig\Components\SupportUsBlock {#8791 +subject: ? App\Entity\Contracts\VotableInterface +url: ? string -twig: Twig\Environment {#1252 …} -cache: Symfony\Component\Cache\Adapter\TraceableTagAwareAdapter {#600 …} -requestStack: Symfony\Component\HttpFoundation\RequestStack {#1328 …} -partnerBlockRepository: App\Repository\PartnerBlockRepository {#8792 …} } |
featured_magazines | App\Twig\Components\FeaturedMagazinesComponent | 12.0 MiB | 0.72 ms | |
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Input props | [ "magazine" => App\Entity\Magazine {#264 +icon: Proxies\__CG__\App\Entity\Image {#245 …} +name: "askelectronics@discuss.tchncs.de" +title: "askelectronics" +description: """ **For questions about component-level electronic circuits, tools and equipment.**\n \n Rules\n -----\n \n 1: Be nice.\n \n 2: Be on-topic (eg: *Electronic*, not *electrical*).\n \n 3: No commercial stuff, buying, selling or valuations.\n \n 4: Be safe.\n \n --- """ +rules: null +subscriptionsCount: 1 +entryCount: 154 +entryCommentCount: 1230 +postCount: 1 +postCommentCount: 4 +isAdult: false +customCss: null +lastActive: DateTime @1729413608 {#274 : 2024-10-20 10:40:08.0 +02:00 } +markedForDeletionAt: null +tags: null +moderators: Doctrine\ORM\PersistentCollection {#236 …} +ownershipRequests: Doctrine\ORM\PersistentCollection {#232 …} +moderatorRequests: Doctrine\ORM\PersistentCollection {#221 …} +entries: Doctrine\ORM\PersistentCollection {#179 …} +posts: Doctrine\ORM\PersistentCollection {#137 …} +subscriptions: Doctrine\ORM\PersistentCollection {#199 …} +bans: Doctrine\ORM\PersistentCollection {#116 …} +reports: Doctrine\ORM\PersistentCollection {#102 …} +badges: Doctrine\ORM\PersistentCollection {#80 …} +logs: Doctrine\ORM\PersistentCollection {#70 …} +awards: Doctrine\ORM\PersistentCollection {#1360 …} +categories: Doctrine\ORM\PersistentCollection {#1792 …} -id: 11 +apId: "askelectronics@discuss.tchncs.de" +apProfileId: "https://discuss.tchncs.de/c/askelectronics" +apPublicUrl: "https://discuss.tchncs.de/c/askelectronics" +apFollowersUrl: "https://discuss.tchncs.de/c/askelectronics/followers" +apInboxUrl: "https://discuss.tchncs.de/inbox" +apDomain: "discuss.tchncs.de" +apPreferredUsername: "askelectronics" +apDiscoverable: true +apManuallyApprovesFollowers: null +privateKey: null +publicKey: null +apFetchedAt: DateTime @1727247714 {#268 : 2024-09-25 09:01:54.0 +02:00 } +apDeletedAt: null +apTimeoutAt: null +visibility: "visible " +createdAt: DateTimeImmutable @1687144409 {#270 : 2023-06-19 05:13:29.0 +02:00 } } ] |
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Attributes | [] |
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Component | App\Twig\Components\FeaturedMagazinesComponent {#8880 +magazine: App\Entity\Magazine {#264 +icon: Proxies\__CG__\App\Entity\Image {#245 …} +name: "askelectronics@discuss.tchncs.de" +title: "askelectronics" +description: """ **For questions about component-level electronic circuits, tools and equipment.**\n \n Rules\n -----\n \n 1: Be nice.\n \n 2: Be on-topic (eg: *Electronic*, not *electrical*).\n \n 3: No commercial stuff, buying, selling or valuations.\n \n 4: Be safe.\n \n --- """ +rules: null +subscriptionsCount: 1 +entryCount: 154 +entryCommentCount: 1230 +postCount: 1 +postCommentCount: 4 +isAdult: false +customCss: null +lastActive: DateTime @1729413608 {#274 : 2024-10-20 10:40:08.0 +02:00 } +markedForDeletionAt: null +tags: null +moderators: Doctrine\ORM\PersistentCollection {#236 …} +ownershipRequests: Doctrine\ORM\PersistentCollection {#232 …} +moderatorRequests: Doctrine\ORM\PersistentCollection {#221 …} +entries: Doctrine\ORM\PersistentCollection {#179 …} +posts: Doctrine\ORM\PersistentCollection {#137 …} +subscriptions: Doctrine\ORM\PersistentCollection {#199 …} +bans: Doctrine\ORM\PersistentCollection {#116 …} +reports: Doctrine\ORM\PersistentCollection {#102 …} +badges: Doctrine\ORM\PersistentCollection {#80 …} +logs: Doctrine\ORM\PersistentCollection {#70 …} +awards: Doctrine\ORM\PersistentCollection {#1360 …} +categories: Doctrine\ORM\PersistentCollection {#1792 …} -id: 11 +apId: "askelectronics@discuss.tchncs.de" +apProfileId: "https://discuss.tchncs.de/c/askelectronics" +apPublicUrl: "https://discuss.tchncs.de/c/askelectronics" +apFollowersUrl: "https://discuss.tchncs.de/c/askelectronics/followers" +apInboxUrl: "https://discuss.tchncs.de/inbox" +apDomain: "discuss.tchncs.de" +apPreferredUsername: "askelectronics" +apDiscoverable: true +apManuallyApprovesFollowers: null +privateKey: null +publicKey: null +apFetchedAt: DateTime @1727247714 {#268 : 2024-09-25 09:01:54.0 +02:00 } +apDeletedAt: null +apTimeoutAt: null +visibility: "visible " +createdAt: DateTimeImmutable @1687144409 {#270 : 2023-06-19 05:13:29.0 +02:00 } } -twig: Twig\Environment {#1252 …} -repository: App\Repository\MagazineRepository {#332 …} } |