Symfony Profiler

Security

Token

There is no security token.

Firewall

main Name

Security enabled

Stateless

Configuration

Key	Value
provider	security.user.provider.concrete.app_user_provider
context	main
entry_point	App\Security\KbinAuthenticator
user_checker	App\Security\UserChecker
access_denied_handler	(none)
access_denied_url	(none)
authenticators	[`"two_factor" "remember_me" "App\Security\KbinAuthenticator" "App\Security\FacebookAuthenticator" "App\Security\GoogleAuthenticator" "App\Security\GithubAuthenticator" "App\Security\KeycloakAuthenticator"`]

Listeners

Listener	Duration	Response
Symfony\Component\Security\Http\Firewall\ChannelListener {#723`-map: Symfony\Component\Security\Http\AccessMap {#722 …} -logger: Monolog\Logger {#783 …} -httpPort: 80 -httpsPort: 443`}	0.00 ms	(none)
Symfony\Component\Security\Http\Firewall\ContextListener {#706-tokenStorage: Symfony\Component\Security\Core\Authentication\Token\Storage\TokenStorage {#1017 …} -sessionKey: "_security_main" -logger: Monolog\Logger {#783 …} -userProviders: Symfony\Component\DependencyInjection\Argument\RewindableGenerator {#705 …} -dispatcher: Symfony\Component\EventDispatcher\Debug\TraceableEventDispatcher {#747 …} -registered: false -trustResolver: Scheb\TwoFactorBundle\Security\Authentication\AuthenticationTrustResolver {#780 …} -sessionTrackerEnabler: Symfony\Component\Security\Core\Authentication\Token\Storage\UsageTrackingTokenStorage::enableUsageTracking(): void {#703 …}}	3.57 ms	(none)
Symfony\Component\Security\Http\Firewall\AuthenticatorManagerListener {#584`-authenticatorManager: Symfony\Component\Security\Http\Authentication\AuthenticatorManager {#595 …}`}	0.00 ms	(none)
Scheb\TwoFactorBundle\Security\Http\Firewall\TwoFactorAccessListener {#582`-twoFactorFirewallConfig: Scheb\TwoFactorBundle\Security\TwoFactor\TwoFactorFirewallConfig {#842 …} -tokenStorage: Symfony\Component\Security\Core\Authentication\Token\Storage\UsageTrackingTokenStorage {#1018 …} -twoFactorAccessDecider: Scheb\TwoFactorBundle\Security\Authorization\TwoFactorAccessDecider {#581 …}`}	0.05 ms	(none)
Symfony\Component\Security\Http\Firewall\AccessListener {#579`-tokenStorage: Symfony\Component\Security\Core\Authentication\Token\Storage\UsageTrackingTokenStorage {#1018 …} -accessDecisionManager: Symfony\Component\Security\Core\Authorization\TraceableAccessDecisionManager {#937 …} -map: Symfony\Component\Security\Http\AccessMap {#722 …}`}	0.00 ms	(none)
Symfony\Component\Security\Http\Firewall\LogoutListener {#786`-tokenStorage: Symfony\Component\Security\Core\Authentication\Token\Storage\UsageTrackingTokenStorage {#1018 …} -options: [ "csrf_parameter" => "_csrf_token" "csrf_token_id" => "logout" "logout_path" => "app_logout" ] -httpUtils: Symfony\Component\Security\Http\HttpUtils {#841 …} -csrfTokenManager: Symfony\Component\Security\Csrf\CsrfTokenManager {#1015 …} -eventDispatcher: Symfony\Component\EventDispatcher\Debug\TraceableEventDispatcher {#747 …}`}	0.00 ms	(none)

Authenticators

No authenticators have been recorded. Check previous profiles on your authentication endpoint.

Access Decision

affirmative Strategy


"Symfony\Component\Security\Core\Authorization\Voter\AuthenticatedVoter"
"Scheb\TwoFactorBundle\Security\Authorization\Voter\TwoFactorInProgressVoter"
"Symfony\Component\Security\Core\Authorization\Voter\RoleHierarchyVoter"
"Symfony\Component\Security\Core\Authorization\Voter\ExpressionVoter"
"App\Security\Voter\EntryCommentVoter"
"App\Security\Voter\EntryVoter"
"App\Security\Voter\MagazineVoter"
"App\Security\Voter\MessageThreadVoter"
"App\Security\Voter\MessageVoter"
"App\Security\Voter\NotificationVoter"
"App\Security\Voter\OAuth2UserConsentVoter"
"App\Security\Voter\PostCommentVoter"
"App\Security\Voter\PostVoter"
"App\Security\Voter\UserVoter"

#	Voter class
1	"Symfony\Component\Security\Core\Authorization\Voter\AuthenticatedVoter"
2	"Scheb\TwoFactorBundle\Security\Authorization\Voter\TwoFactorInProgressVoter"
3	"Symfony\Component\Security\Core\Authorization\Voter\RoleHierarchyVoter"
4	"Symfony\Component\Security\Core\Authorization\Voter\ExpressionVoter"
5	"App\Security\Voter\EntryCommentVoter"
6	"App\Security\Voter\EntryVoter"
7	"App\Security\Voter\MagazineVoter"
8	"App\Security\Voter\MessageThreadVoter"
9	"App\Security\Voter\MessageVoter"
10	"App\Security\Voter\NotificationVoter"
11	"App\Security\Voter\OAuth2UserConsentVoter"
12	"App\Security\Voter\PostCommentVoter"
13	"App\Security\Voter\PostVoter"
14	"App\Security\Voter\UserVoter"

Access decision log


null
"App\Security\Voter\UserVoter"
App\Entity\Entry {#2413
  +user: Proxies\__CG__\App\Entity\User {#1973 …}
  +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
      date: 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"
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    +apPreferredUsername: "askelectronics"
    +apDiscoverable: true
    +apManuallyApprovesFollowers: null
    +privateKey: null
    +publicKey: null
    +apFetchedAt: DateTime @1727247714 {#268
      date: 2024-09-25 09:01:54.0 +02:00
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    +apDeletedAt: null
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    +visibility: "visible             "
    +createdAt: DateTimeImmutable @1687144409 {#270
      date: 2023-06-19 05:13:29.0 +02:00
    }
  }
  +image: Proxies\__CG__\App\Entity\Image {#1978 …}
  +domain: Proxies\__CG__\App\Entity\Domain {#1889 …}
  +slug: "Shift-register-missing-bits"
  +title: "Shift register missing bits"
  +url: "https://discuss.tchncs.de/pictrs/image/7da4f08e-8d93-4cf1-99c9-22f2aea08d32.png"
  +body: """
    Hey friends,\n
    \n
    I have a two [daisy chained shift registers](https://i.imgur.com/tZBQ45e.png) ([74AHC595](https://www.diodes.com/assets/Datasheets/74AHC595.pdf)) which are controlled via an ESP32. I want to set one output to high at a time before switching to the next.\n
    \n
    The code seems to work, but the outputs O_9 and O_10 are not [staying high](https://i.imgur.com/v5OOE1K.png) ([zoom](https://i.imgur.com/VpMbdW3.png)) after setting them, whereas all the other ones are working fine. This is the used code snipped:\n
    \n
    ```\n
    \n
    <span style="color:#323232;">pinMode(SHIFT_OUT_DATA, OUTPUT);\n
    </span><span style="color:#323232;">pinMode(SHIFT_OUT_CLK, OUTPUT);\n
    </span><span style="color:#323232;">pinMode(SHIFT_OUT_N_EN, OUTPUT);\n
    </span><span style="color:#323232;">pinMode(SHIFT_OUT_LATCH, OUTPUT);\n
    </span><span style="color:#323232;">\n
    </span><span style="color:#323232;">digitalWrite(SHIFT_OUT_N_EN, LOW);\n
    </span><span style="color:#323232;">\n
    </span><span style="color:#323232;">uint16_t input_bin = 0b1000000000000000;\n
    </span><span style="color:#323232;">\n
    </span><span style="color:#323232;">for(int i=0; i&lt;17; i++){\n
    </span><span style="color:#323232;">\n
    </span><span style="color:#323232;">    byte upper_byte = input_bin >> 8;\n
    </span><span style="color:#323232;">    byte lower_byte = input_bin &amp; 0x00FF;\n
    </span><span style="color:#323232;">\n
    </span><span style="color:#323232;">    digitalWrite(SHIFT_OUT_LATCH, LOW);\n
    </span><span style="color:#323232;">    shiftDataOut(SHIFT_OUT_DATA, SHIFT_OUT_CLK, MSBFIRST, lower_byte);\n
    </span><span style="color:#323232;">    shiftDataOut(SHIFT_OUT_DATA, SHIFT_OUT_CLK, MSBFIRST, upper_byte);\n
    </span><span style="color:#323232;">    usleep(10);\n
    </span><span style="color:#323232;">    digitalWrite(SHIFT_OUT_LATCH, HIGH);\n
    </span><span style="color:#323232;">\n
    </span><span style="color:#323232;">    delay(10)\n
    </span><span style="color:#323232;">    input_bin = input_bin>>1;\n
    </span><span style="color:#323232;">} \n
    </span>\n
    ```\n
    \n
    Is there anything I’m doing wrong, or any idea on where the problem may lie? I’ve already tried looking for shorts and other error sources, but the design was manufactured on a PCB and no assembly issues are noticeable.
    """
  +type: "image"
  +lang: "en"
  +isOc: false
  +hasEmbed: true
  +commentCount: 15
  +favouriteCount: 13
  +score: 0
  +isAdult: false
  +sticky: false
  +lastActive: DateTime @1695882892 {#2418
    date: 2023-09-28 08:34:52.0 +02:00
  }
  +ip: null
  +adaAmount: 0
  +tags: null
  +mentions: null
  +comments: Doctrine\ORM\PersistentCollection {#1688 …}
  +votes: Doctrine\ORM\PersistentCollection {#1934 …}
  +reports: Doctrine\ORM\PersistentCollection {#1965 …}
  +favourites: Doctrine\ORM\PersistentCollection {#1396 …}
  +notifications: Doctrine\ORM\PersistentCollection {#2439 …}
  +badges: Doctrine\ORM\PersistentCollection {#2357 …}
  +children: []
  -id: 2357
  -titleTs: "'bit':4 'miss':3 'regist':2 'shift':1"
  -bodyTs: "'/assets/datasheets/74ahc595.pdf))':17 '/tzbq45e.png)':13 '/v5ooe1k.png)':59 '/vpmbdw3.png))':63 '0':116 '0b1000000000000000':112 '0x00ff':131 '1':170 '10':52,158,165 '17':118 '74ahc595':14 '8':125 '9':49 'alreadi':189 'anyth':173 'assembl':208 'bin':111,124,130,167,169 'byte':120,122,126,128,146,156 'chain':8 'clk':89,143,153 'code':41,79 'control':20 'daisi':7 'data':84,140,150 'delay':164 'design':200 'digitalwrit':102,132,159 'en':95,106 'error':196 'esp32':23 'fine':74 'friend':2 'hey':1 'high':31,56,163 'i.imgur.com':12,58,62 'i.imgur.com/tzbq45e.png)':11 'i.imgur.com/v5ooe1k.png)':57 'i.imgur.com/vpmbdw3.png))':61 'idea':180 'input':110,123,129,166,168 'int':114 'issu':209 'latch':100,135,162 'lie':186 'look':191 'low':107,136 'lower':127,145 'm':175 'manufactur':202 'may':185 'msbfirst':144,154 'n':94,105 'next':39 'notic':211 'o':48,51 'one':28,71 'output':29,47,85,90,96,101 'pcb':205 'pinmod':81,86,91,97 'problem':184 'regist':10 'seem':42 'set':27,65 'shift':9,82,87,92,98,103,133,138,141,148,151,160 'shiftdataout':137,147 'short':193 'snip':80 'sourc':197 'stay':55 'switch':36 'time':34 'tri':190 'two':6 'uint16':108 'upper':121,155 'use':78 'usleep':157 've':188 'via':21 'want':25 'wherea':67 'work':44,73 'wrong':177 'www.diodes.com':16 'www.diodes.com/assets/datasheets/74ahc595.pdf))':15 'zoom':60"
  +cross: false
  +upVotes: 0
  +downVotes: 0
  +ranking: 1695910961
  +visibility: "visible             "
  +apId: "https://discuss.tchncs.de/post/3882589"
  +editedAt: DateTimeImmutable @1695842569 {#1858
    date: 2023-09-27 21:22:49.0 +02:00
  }
  +createdAt: DateTimeImmutable @1695841461 {#2388
    date: 2023-09-27 21:04:21.0 +02:00
  }
}
"App\Security\Voter\UserVoter"
App\Entity\Entry {#2413
  +user: Proxies\__CG__\App\Entity\User {#1973 …}
  +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
      date: 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 …}
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    +posts: Doctrine\ORM\PersistentCollection {#137 …}
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    +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 …}
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    +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
      date: 2024-09-25 09:01:54.0 +02:00
    }
    +apDeletedAt: null
    +apTimeoutAt: null
    +visibility: "visible             "
    +createdAt: DateTimeImmutable @1687144409 {#270
      date: 2023-06-19 05:13:29.0 +02:00
    }
  }
  +image: Proxies\__CG__\App\Entity\Image {#1978 …}
  +domain: Proxies\__CG__\App\Entity\Domain {#1889 …}
  +slug: "Shift-register-missing-bits"
  +title: "Shift register missing bits"
  +url: "https://discuss.tchncs.de/pictrs/image/7da4f08e-8d93-4cf1-99c9-22f2aea08d32.png"
  +body: """
    Hey friends,\n
    \n
    I have a two [daisy chained shift registers](https://i.imgur.com/tZBQ45e.png) ([74AHC595](https://www.diodes.com/assets/Datasheets/74AHC595.pdf)) which are controlled via an ESP32. I want to set one output to high at a time before switching to the next.\n
    \n
    The code seems to work, but the outputs O_9 and O_10 are not [staying high](https://i.imgur.com/v5OOE1K.png) ([zoom](https://i.imgur.com/VpMbdW3.png)) after setting them, whereas all the other ones are working fine. This is the used code snipped:\n
    \n
    ```\n
    \n
    <span style="color:#323232;">pinMode(SHIFT_OUT_DATA, OUTPUT);\n
    </span><span style="color:#323232;">pinMode(SHIFT_OUT_CLK, OUTPUT);\n
    </span><span style="color:#323232;">pinMode(SHIFT_OUT_N_EN, OUTPUT);\n
    </span><span style="color:#323232;">pinMode(SHIFT_OUT_LATCH, OUTPUT);\n
    </span><span style="color:#323232;">\n
    </span><span style="color:#323232;">digitalWrite(SHIFT_OUT_N_EN, LOW);\n
    </span><span style="color:#323232;">\n
    </span><span style="color:#323232;">uint16_t input_bin = 0b1000000000000000;\n
    </span><span style="color:#323232;">\n
    </span><span style="color:#323232;">for(int i=0; i&lt;17; i++){\n
    </span><span style="color:#323232;">\n
    </span><span style="color:#323232;">    byte upper_byte = input_bin >> 8;\n
    </span><span style="color:#323232;">    byte lower_byte = input_bin &amp; 0x00FF;\n
    </span><span style="color:#323232;">\n
    </span><span style="color:#323232;">    digitalWrite(SHIFT_OUT_LATCH, LOW);\n
    </span><span style="color:#323232;">    shiftDataOut(SHIFT_OUT_DATA, SHIFT_OUT_CLK, MSBFIRST, lower_byte);\n
    </span><span style="color:#323232;">    shiftDataOut(SHIFT_OUT_DATA, SHIFT_OUT_CLK, MSBFIRST, upper_byte);\n
    </span><span style="color:#323232;">    usleep(10);\n
    </span><span style="color:#323232;">    digitalWrite(SHIFT_OUT_LATCH, HIGH);\n
    </span><span style="color:#323232;">\n
    </span><span style="color:#323232;">    delay(10)\n
    </span><span style="color:#323232;">    input_bin = input_bin>>1;\n
    </span><span style="color:#323232;">} \n
    </span>\n
    ```\n
    \n
    Is there anything I’m doing wrong, or any idea on where the problem may lie? I’ve already tried looking for shorts and other error sources, but the design was manufactured on a PCB and no assembly issues are noticeable.
    """
  +type: "image"
  +lang: "en"
  +isOc: false
  +hasEmbed: true
  +commentCount: 15
  +favouriteCount: 13
  +score: 0
  +isAdult: false
  +sticky: false
  +lastActive: DateTime @1695882892 {#2418
    date: 2023-09-28 08:34:52.0 +02:00
  }
  +ip: null
  +adaAmount: 0
  +tags: null
  +mentions: null
  +comments: Doctrine\ORM\PersistentCollection {#1688 …}
  +votes: Doctrine\ORM\PersistentCollection {#1934 …}
  +reports: Doctrine\ORM\PersistentCollection {#1965 …}
  +favourites: Doctrine\ORM\PersistentCollection {#1396 …}
  +notifications: Doctrine\ORM\PersistentCollection {#2439 …}
  +badges: Doctrine\ORM\PersistentCollection {#2357 …}
  +children: []
  -id: 2357
  -titleTs: "'bit':4 'miss':3 'regist':2 'shift':1"
  -bodyTs: "'/assets/datasheets/74ahc595.pdf))':17 '/tzbq45e.png)':13 '/v5ooe1k.png)':59 '/vpmbdw3.png))':63 '0':116 '0b1000000000000000':112 '0x00ff':131 '1':170 '10':52,158,165 '17':118 '74ahc595':14 '8':125 '9':49 'alreadi':189 'anyth':173 'assembl':208 'bin':111,124,130,167,169 'byte':120,122,126,128,146,156 'chain':8 'clk':89,143,153 'code':41,79 'control':20 'daisi':7 'data':84,140,150 'delay':164 'design':200 'digitalwrit':102,132,159 'en':95,106 'error':196 'esp32':23 'fine':74 'friend':2 'hey':1 'high':31,56,163 'i.imgur.com':12,58,62 'i.imgur.com/tzbq45e.png)':11 'i.imgur.com/v5ooe1k.png)':57 'i.imgur.com/vpmbdw3.png))':61 'idea':180 'input':110,123,129,166,168 'int':114 'issu':209 'latch':100,135,162 'lie':186 'look':191 'low':107,136 'lower':127,145 'm':175 'manufactur':202 'may':185 'msbfirst':144,154 'n':94,105 'next':39 'notic':211 'o':48,51 'one':28,71 'output':29,47,85,90,96,101 'pcb':205 'pinmod':81,86,91,97 'problem':184 'regist':10 'seem':42 'set':27,65 'shift':9,82,87,92,98,103,133,138,141,148,151,160 'shiftdataout':137,147 'short':193 'snip':80 'sourc':197 'stay':55 'switch':36 'time':34 'tri':190 'two':6 'uint16':108 'upper':121,155 'use':78 'usleep':157 've':188 'via':21 'want':25 'wherea':67 'work':44,73 'wrong':177 'www.diodes.com':16 'www.diodes.com/assets/datasheets/74ahc595.pdf))':15 'zoom':60"
  +cross: false
  +upVotes: 0
  +downVotes: 0
  +ranking: 1695910961
  +visibility: "visible             "
  +apId: "https://discuss.tchncs.de/post/3882589"
  +editedAt: DateTimeImmutable @1695842569 {#1858
    date: 2023-09-27 21:22:49.0 +02:00
  }
  +createdAt: DateTimeImmutable @1695841461 {#2388
    date: 2023-09-27 21:04:21.0 +02:00
  }
}
"App\Security\Voter\UserVoter"
App\Entity\Entry {#2413
  +user: Proxies\__CG__\App\Entity\User {#1973 …}
  +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
      date: 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 …}
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  +domain: Proxies\__CG__\App\Entity\Domain {#1889 …}
  +slug: "Shift-register-missing-bits"
  +title: "Shift register missing bits"
  +url: "https://discuss.tchncs.de/pictrs/image/7da4f08e-8d93-4cf1-99c9-22f2aea08d32.png"
  +body: """
    Hey friends,\n
    \n
    I have a two [daisy chained shift registers](https://i.imgur.com/tZBQ45e.png) ([74AHC595](https://www.diodes.com/assets/Datasheets/74AHC595.pdf)) which are controlled via an ESP32. I want to set one output to high at a time before switching to the next.\n
    \n
    The code seems to work, but the outputs O_9 and O_10 are not [staying high](https://i.imgur.com/v5OOE1K.png) ([zoom](https://i.imgur.com/VpMbdW3.png)) after setting them, whereas all the other ones are working fine. This is the used code snipped:\n
    \n
    ```\n
    \n
    <span style="color:#323232;">pinMode(SHIFT_OUT_DATA, OUTPUT);\n
    </span><span style="color:#323232;">pinMode(SHIFT_OUT_CLK, OUTPUT);\n
    </span><span style="color:#323232;">pinMode(SHIFT_OUT_N_EN, OUTPUT);\n
    </span><span style="color:#323232;">pinMode(SHIFT_OUT_LATCH, OUTPUT);\n
    </span><span style="color:#323232;">\n
    </span><span style="color:#323232;">digitalWrite(SHIFT_OUT_N_EN, LOW);\n
    </span><span style="color:#323232;">\n
    </span><span style="color:#323232;">uint16_t input_bin = 0b1000000000000000;\n
    </span><span style="color:#323232;">\n
    </span><span style="color:#323232;">for(int i=0; i&lt;17; i++){\n
    </span><span style="color:#323232;">\n
    </span><span style="color:#323232;">    byte upper_byte = input_bin >> 8;\n
    </span><span style="color:#323232;">    byte lower_byte = input_bin &amp; 0x00FF;\n
    </span><span style="color:#323232;">\n
    </span><span style="color:#323232;">    digitalWrite(SHIFT_OUT_LATCH, LOW);\n
    </span><span style="color:#323232;">    shiftDataOut(SHIFT_OUT_DATA, SHIFT_OUT_CLK, MSBFIRST, lower_byte);\n
    </span><span style="color:#323232;">    shiftDataOut(SHIFT_OUT_DATA, SHIFT_OUT_CLK, MSBFIRST, upper_byte);\n
    </span><span style="color:#323232;">    usleep(10);\n
    </span><span style="color:#323232;">    digitalWrite(SHIFT_OUT_LATCH, HIGH);\n
    </span><span style="color:#323232;">\n
    </span><span style="color:#323232;">    delay(10)\n
    </span><span style="color:#323232;">    input_bin = input_bin>>1;\n
    </span><span style="color:#323232;">} \n
    </span>\n
    ```\n
    \n
    Is there anything I’m doing wrong, or any idea on where the problem may lie? I’ve already tried looking for shorts and other error sources, but the design was manufactured on a PCB and no assembly issues are noticeable.
    """
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        **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
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        ---
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    +image: Proxies\__CG__\App\Entity\Image {#1978 …}
    +domain: Proxies\__CG__\App\Entity\Domain {#1889 …}
    +slug: "Shift-register-missing-bits"
    +title: "Shift register missing bits"
    +url: "https://discuss.tchncs.de/pictrs/image/7da4f08e-8d93-4cf1-99c9-22f2aea08d32.png"
    +body: """
      Hey friends,\n
      \n
      I have a two [daisy chained shift registers](https://i.imgur.com/tZBQ45e.png) ([74AHC595](https://www.diodes.com/assets/Datasheets/74AHC595.pdf)) which are controlled via an ESP32. I want to set one output to high at a time before switching to the next.\n
      \n
      The code seems to work, but the outputs O_9 and O_10 are not [staying high](https://i.imgur.com/v5OOE1K.png) ([zoom](https://i.imgur.com/VpMbdW3.png)) after setting them, whereas all the other ones are working fine. This is the used code snipped:\n
      \n
      ```\n
      \n
      <span style="color:#323232;">pinMode(SHIFT_OUT_DATA, OUTPUT);\n
      </span><span style="color:#323232;">pinMode(SHIFT_OUT_CLK, OUTPUT);\n
      </span><span style="color:#323232;">pinMode(SHIFT_OUT_N_EN, OUTPUT);\n
      </span><span style="color:#323232;">pinMode(SHIFT_OUT_LATCH, OUTPUT);\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">digitalWrite(SHIFT_OUT_N_EN, LOW);\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">uint16_t input_bin = 0b1000000000000000;\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">for(int i=0; i&lt;17; i++){\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">    byte upper_byte = input_bin >> 8;\n
      </span><span style="color:#323232;">    byte lower_byte = input_bin &amp; 0x00FF;\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">    digitalWrite(SHIFT_OUT_LATCH, LOW);\n
      </span><span style="color:#323232;">    shiftDataOut(SHIFT_OUT_DATA, SHIFT_OUT_CLK, MSBFIRST, lower_byte);\n
      </span><span style="color:#323232;">    shiftDataOut(SHIFT_OUT_DATA, SHIFT_OUT_CLK, MSBFIRST, upper_byte);\n
      </span><span style="color:#323232;">    usleep(10);\n
      </span><span style="color:#323232;">    digitalWrite(SHIFT_OUT_LATCH, HIGH);\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">    delay(10)\n
      </span><span style="color:#323232;">    input_bin = input_bin>>1;\n
      </span><span style="color:#323232;">} \n
      </span>\n
      ```\n
      \n
      Is there anything I’m doing wrong, or any idea on where the problem may lie? I’ve already tried looking for shorts and other error sources, but the design was manufactured on a PCB and no assembly issues are noticeable.
      """
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    -titleTs: "'bit':4 'miss':3 'regist':2 'shift':1"
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      date: 2023-09-27 21:22:49.0 +02:00
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      date: 2023-09-27 21:04:21.0 +02:00
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  }
  +magazine: App\Entity\Magazine {#264}
  +image: null
  +parent: null
  +root: null
  +body: """
    The first two lines of the for loop,\n
    \n
    ```\n
    \n
    <span style="color:#323232;">byte upper_byte = input_bin >> 8;\n
    </span><span style="color:#323232;">byte lower_byte = input_bin &amp; 0x00FF;\n
    </span>\n
    ```\n
    \n
    don’t really accomplish anything. The first line is bit shifting to the right 8, and then you just bitwise and it resulting in the same thing. For example, starting with `input_bin`:\n
    \n
    ```\n
    \n
    <span style="color:#323232;">1000 0000 0000 0000\n
    </span><span style="color:#323232;">>> 8\n
    </span><span style="color:#323232;">0000 0000 1000 0000\n
    </span><span style="color:#323232;">&amp; 0xFF\n
    </span><span style="color:#323232;">0000 0000 1000 0000\n
    </span>\n
    ```\n
    \n
    So, every time you go through a cycle of the for loop, you’ll just start with the same values in `upper_byte`, and `lower_byte`. To sequentially output each shifted value, you’ll instead want something like:\n
    \n
    ```\n
    \n
    <span style="color:#323232;">output_value = 0b1\n
    </span><span style="color:#323232;">for i = 1 to 16:\n
    </span><span style="color:#323232;">    latch(low)\n
    </span><span style="color:#323232;">    shift_out(output_value)\n
    </span><span style="color:#323232;">    latch(high)\n
    </span><span style="color:#323232;">    output_value = output_value &lt;&lt; 1\n
    </span>\n
    ```\n
    \n
    That is, if I interpereted correctly that you want the shift registers to output the following:\n
    \n
    ```\n
    \n
    <span style="color:#323232;">output_count, upper_shift_register, lower_shift_register\n
    </span><span style="color:#323232;">1, 00000000, 00000001\n
    </span><span style="color:#323232;">2, 00000000, 00000010\n
    </span><span style="color:#323232;">3, 00000000, 00000100\n
    </span><span style="color:#323232;">.\n
    </span><span style="color:#323232;">.\n
    </span><span style="color:#323232;">.\n
    </span><span style="color:#323232;">16, 10000000, 00000000\n
    </span>\n
    ```\n
    \n
    Note: Lemmy has a bug where it doesn’t format some symbols correctly, so the left angle bracket gets formatted as `&lt;`. The same issue exists for the right angle bracket, the ampersand, and I would presume others.
    """
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}
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        **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
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        """
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    +image: Proxies\__CG__\App\Entity\Image {#1978 …}
    +domain: Proxies\__CG__\App\Entity\Domain {#1889 …}
    +slug: "Shift-register-missing-bits"
    +title: "Shift register missing bits"
    +url: "https://discuss.tchncs.de/pictrs/image/7da4f08e-8d93-4cf1-99c9-22f2aea08d32.png"
    +body: """
      Hey friends,\n
      \n
      I have a two [daisy chained shift registers](https://i.imgur.com/tZBQ45e.png) ([74AHC595](https://www.diodes.com/assets/Datasheets/74AHC595.pdf)) which are controlled via an ESP32. I want to set one output to high at a time before switching to the next.\n
      \n
      The code seems to work, but the outputs O_9 and O_10 are not [staying high](https://i.imgur.com/v5OOE1K.png) ([zoom](https://i.imgur.com/VpMbdW3.png)) after setting them, whereas all the other ones are working fine. This is the used code snipped:\n
      \n
      ```\n
      \n
      <span style="color:#323232;">pinMode(SHIFT_OUT_DATA, OUTPUT);\n
      </span><span style="color:#323232;">pinMode(SHIFT_OUT_CLK, OUTPUT);\n
      </span><span style="color:#323232;">pinMode(SHIFT_OUT_N_EN, OUTPUT);\n
      </span><span style="color:#323232;">pinMode(SHIFT_OUT_LATCH, OUTPUT);\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">digitalWrite(SHIFT_OUT_N_EN, LOW);\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">uint16_t input_bin = 0b1000000000000000;\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">for(int i=0; i&lt;17; i++){\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">    byte upper_byte = input_bin >> 8;\n
      </span><span style="color:#323232;">    byte lower_byte = input_bin &amp; 0x00FF;\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">    digitalWrite(SHIFT_OUT_LATCH, LOW);\n
      </span><span style="color:#323232;">    shiftDataOut(SHIFT_OUT_DATA, SHIFT_OUT_CLK, MSBFIRST, lower_byte);\n
      </span><span style="color:#323232;">    shiftDataOut(SHIFT_OUT_DATA, SHIFT_OUT_CLK, MSBFIRST, upper_byte);\n
      </span><span style="color:#323232;">    usleep(10);\n
      </span><span style="color:#323232;">    digitalWrite(SHIFT_OUT_LATCH, HIGH);\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">    delay(10)\n
      </span><span style="color:#323232;">    input_bin = input_bin>>1;\n
      </span><span style="color:#323232;">} \n
      </span>\n
      ```\n
      \n
      Is there anything I’m doing wrong, or any idea on where the problem may lie? I’ve already tried looking for shorts and other error sources, but the design was manufactured on a PCB and no assembly issues are noticeable.
      """
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    -titleTs: "'bit':4 'miss':3 'regist':2 'shift':1"
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      date: 2023-09-27 21:04:21.0 +02:00
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  +magazine: App\Entity\Magazine {#264}
  +image: null
  +parent: null
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  +body: """
    The first two lines of the for loop,\n
    \n
    ```\n
    \n
    <span style="color:#323232;">byte upper_byte = input_bin >> 8;\n
    </span><span style="color:#323232;">byte lower_byte = input_bin &amp; 0x00FF;\n
    </span>\n
    ```\n
    \n
    don’t really accomplish anything. The first line is bit shifting to the right 8, and then you just bitwise and it resulting in the same thing. For example, starting with `input_bin`:\n
    \n
    ```\n
    \n
    <span style="color:#323232;">1000 0000 0000 0000\n
    </span><span style="color:#323232;">>> 8\n
    </span><span style="color:#323232;">0000 0000 1000 0000\n
    </span><span style="color:#323232;">&amp; 0xFF\n
    </span><span style="color:#323232;">0000 0000 1000 0000\n
    </span>\n
    ```\n
    \n
    So, every time you go through a cycle of the for loop, you’ll just start with the same values in `upper_byte`, and `lower_byte`. To sequentially output each shifted value, you’ll instead want something like:\n
    \n
    ```\n
    \n
    <span style="color:#323232;">output_value = 0b1\n
    </span><span style="color:#323232;">for i = 1 to 16:\n
    </span><span style="color:#323232;">    latch(low)\n
    </span><span style="color:#323232;">    shift_out(output_value)\n
    </span><span style="color:#323232;">    latch(high)\n
    </span><span style="color:#323232;">    output_value = output_value &lt;&lt; 1\n
    </span>\n
    ```\n
    \n
    That is, if I interpereted correctly that you want the shift registers to output the following:\n
    \n
    ```\n
    \n
    <span style="color:#323232;">output_count, upper_shift_register, lower_shift_register\n
    </span><span style="color:#323232;">1, 00000000, 00000001\n
    </span><span style="color:#323232;">2, 00000000, 00000010\n
    </span><span style="color:#323232;">3, 00000000, 00000100\n
    </span><span style="color:#323232;">.\n
    </span><span style="color:#323232;">.\n
    </span><span style="color:#323232;">.\n
    </span><span style="color:#323232;">16, 10000000, 00000000\n
    </span>\n
    ```\n
    \n
    Note: Lemmy has a bug where it doesn’t format some symbols correctly, so the left angle bracket gets formatted as `&lt;`. The same issue exists for the right angle bracket, the ampersand, and I would presume others.
    """
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      +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
        ---
        """
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    +image: Proxies\__CG__\App\Entity\Image {#1978 …}
    +domain: Proxies\__CG__\App\Entity\Domain {#1889 …}
    +slug: "Shift-register-missing-bits"
    +title: "Shift register missing bits"
    +url: "https://discuss.tchncs.de/pictrs/image/7da4f08e-8d93-4cf1-99c9-22f2aea08d32.png"
    +body: """
      Hey friends,\n
      \n
      I have a two [daisy chained shift registers](https://i.imgur.com/tZBQ45e.png) ([74AHC595](https://www.diodes.com/assets/Datasheets/74AHC595.pdf)) which are controlled via an ESP32. I want to set one output to high at a time before switching to the next.\n
      \n
      The code seems to work, but the outputs O_9 and O_10 are not [staying high](https://i.imgur.com/v5OOE1K.png) ([zoom](https://i.imgur.com/VpMbdW3.png)) after setting them, whereas all the other ones are working fine. This is the used code snipped:\n
      \n
      ```\n
      \n
      <span style="color:#323232;">pinMode(SHIFT_OUT_DATA, OUTPUT);\n
      </span><span style="color:#323232;">pinMode(SHIFT_OUT_CLK, OUTPUT);\n
      </span><span style="color:#323232;">pinMode(SHIFT_OUT_N_EN, OUTPUT);\n
      </span><span style="color:#323232;">pinMode(SHIFT_OUT_LATCH, OUTPUT);\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">digitalWrite(SHIFT_OUT_N_EN, LOW);\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">uint16_t input_bin = 0b1000000000000000;\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">for(int i=0; i&lt;17; i++){\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">    byte upper_byte = input_bin >> 8;\n
      </span><span style="color:#323232;">    byte lower_byte = input_bin &amp; 0x00FF;\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">    digitalWrite(SHIFT_OUT_LATCH, LOW);\n
      </span><span style="color:#323232;">    shiftDataOut(SHIFT_OUT_DATA, SHIFT_OUT_CLK, MSBFIRST, lower_byte);\n
      </span><span style="color:#323232;">    shiftDataOut(SHIFT_OUT_DATA, SHIFT_OUT_CLK, MSBFIRST, upper_byte);\n
      </span><span style="color:#323232;">    usleep(10);\n
      </span><span style="color:#323232;">    digitalWrite(SHIFT_OUT_LATCH, HIGH);\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">    delay(10)\n
      </span><span style="color:#323232;">    input_bin = input_bin>>1;\n
      </span><span style="color:#323232;">} \n
      </span>\n
      ```\n
      \n
      Is there anything I’m doing wrong, or any idea on where the problem may lie? I’ve already tried looking for shorts and other error sources, but the design was manufactured on a PCB and no assembly issues are noticeable.
      """
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  +magazine: App\Entity\Magazine {#264}
  +image: null
  +parent: null
  +root: null
  +body: """
    The first two lines of the for loop,\n
    \n
    ```\n
    \n
    <span style="color:#323232;">byte upper_byte = input_bin >> 8;\n
    </span><span style="color:#323232;">byte lower_byte = input_bin &amp; 0x00FF;\n
    </span>\n
    ```\n
    \n
    don’t really accomplish anything. The first line is bit shifting to the right 8, and then you just bitwise and it resulting in the same thing. For example, starting with `input_bin`:\n
    \n
    ```\n
    \n
    <span style="color:#323232;">1000 0000 0000 0000\n
    </span><span style="color:#323232;">>> 8\n
    </span><span style="color:#323232;">0000 0000 1000 0000\n
    </span><span style="color:#323232;">&amp; 0xFF\n
    </span><span style="color:#323232;">0000 0000 1000 0000\n
    </span>\n
    ```\n
    \n
    So, every time you go through a cycle of the for loop, you’ll just start with the same values in `upper_byte`, and `lower_byte`. To sequentially output each shifted value, you’ll instead want something like:\n
    \n
    ```\n
    \n
    <span style="color:#323232;">output_value = 0b1\n
    </span><span style="color:#323232;">for i = 1 to 16:\n
    </span><span style="color:#323232;">    latch(low)\n
    </span><span style="color:#323232;">    shift_out(output_value)\n
    </span><span style="color:#323232;">    latch(high)\n
    </span><span style="color:#323232;">    output_value = output_value &lt;&lt; 1\n
    </span>\n
    ```\n
    \n
    That is, if I interpereted correctly that you want the shift registers to output the following:\n
    \n
    ```\n
    \n
    <span style="color:#323232;">output_count, upper_shift_register, lower_shift_register\n
    </span><span style="color:#323232;">1, 00000000, 00000001\n
    </span><span style="color:#323232;">2, 00000000, 00000010\n
    </span><span style="color:#323232;">3, 00000000, 00000100\n
    </span><span style="color:#323232;">.\n
    </span><span style="color:#323232;">.\n
    </span><span style="color:#323232;">.\n
    </span><span style="color:#323232;">16, 10000000, 00000000\n
    </span>\n
    ```\n
    \n
    Note: Lemmy has a bug where it doesn’t format some symbols correctly, so the left angle bracket gets formatted as `&lt;`. The same issue exists for the right angle bracket, the ampersand, and I would presume others.
    """
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    date: 2023-09-28 08:41:55.0 +02:00
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}
"App\Security\Voter\UserVoter"
null
"App\Security\Voter\UserVoter"
App\Entity\EntryComment {#4288
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        **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
        ---
        """
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    +image: Proxies\__CG__\App\Entity\Image {#1978 …}
    +domain: Proxies\__CG__\App\Entity\Domain {#1889 …}
    +slug: "Shift-register-missing-bits"
    +title: "Shift register missing bits"
    +url: "https://discuss.tchncs.de/pictrs/image/7da4f08e-8d93-4cf1-99c9-22f2aea08d32.png"
    +body: """
      Hey friends,\n
      \n
      I have a two [daisy chained shift registers](https://i.imgur.com/tZBQ45e.png) ([74AHC595](https://www.diodes.com/assets/Datasheets/74AHC595.pdf)) which are controlled via an ESP32. I want to set one output to high at a time before switching to the next.\n
      \n
      The code seems to work, but the outputs O_9 and O_10 are not [staying high](https://i.imgur.com/v5OOE1K.png) ([zoom](https://i.imgur.com/VpMbdW3.png)) after setting them, whereas all the other ones are working fine. This is the used code snipped:\n
      \n
      ```\n
      \n
      <span style="color:#323232;">pinMode(SHIFT_OUT_DATA, OUTPUT);\n
      </span><span style="color:#323232;">pinMode(SHIFT_OUT_CLK, OUTPUT);\n
      </span><span style="color:#323232;">pinMode(SHIFT_OUT_N_EN, OUTPUT);\n
      </span><span style="color:#323232;">pinMode(SHIFT_OUT_LATCH, OUTPUT);\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">digitalWrite(SHIFT_OUT_N_EN, LOW);\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">uint16_t input_bin = 0b1000000000000000;\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">for(int i=0; i&lt;17; i++){\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">    byte upper_byte = input_bin >> 8;\n
      </span><span style="color:#323232;">    byte lower_byte = input_bin &amp; 0x00FF;\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">    digitalWrite(SHIFT_OUT_LATCH, LOW);\n
      </span><span style="color:#323232;">    shiftDataOut(SHIFT_OUT_DATA, SHIFT_OUT_CLK, MSBFIRST, lower_byte);\n
      </span><span style="color:#323232;">    shiftDataOut(SHIFT_OUT_DATA, SHIFT_OUT_CLK, MSBFIRST, upper_byte);\n
      </span><span style="color:#323232;">    usleep(10);\n
      </span><span style="color:#323232;">    digitalWrite(SHIFT_OUT_LATCH, HIGH);\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">    delay(10)\n
      </span><span style="color:#323232;">    input_bin = input_bin>>1;\n
      </span><span style="color:#323232;">} \n
      </span>\n
      ```\n
      \n
      Is there anything I’m doing wrong, or any idea on where the problem may lie? I’ve already tried looking for shorts and other error sources, but the design was manufactured on a PCB and no assembly issues are noticeable.
      """
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    -titleTs: "'bit':4 'miss':3 'regist':2 'shift':1"
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    +editedAt: DateTimeImmutable @1695842569 {#1858
      date: 2023-09-27 21:22:49.0 +02:00
    }
    +createdAt: DateTimeImmutable @1695841461 {#2388
      date: 2023-09-27 21:04:21.0 +02:00
    }
  }
  +magazine: App\Entity\Magazine {#264}
  +image: null
  +parent: App\Entity\EntryComment {#4059
    +user: App\Entity\User {#4008 …}
    +entry: App\Entity\Entry {#2413}
    +magazine: App\Entity\Magazine {#264}
    +image: null
    +parent: null
    +root: null
    +body: """
      The first two lines of the for loop,\n
      \n
      ```\n
      \n
      <span style="color:#323232;">byte upper_byte = input_bin >> 8;\n
      </span><span style="color:#323232;">byte lower_byte = input_bin &amp; 0x00FF;\n
      </span>\n
      ```\n
      \n
      don’t really accomplish anything. The first line is bit shifting to the right 8, and then you just bitwise and it resulting in the same thing. For example, starting with `input_bin`:\n
      \n
      ```\n
      \n
      <span style="color:#323232;">1000 0000 0000 0000\n
      </span><span style="color:#323232;">>> 8\n
      </span><span style="color:#323232;">0000 0000 1000 0000\n
      </span><span style="color:#323232;">&amp; 0xFF\n
      </span><span style="color:#323232;">0000 0000 1000 0000\n
      </span>\n
      ```\n
      \n
      So, every time you go through a cycle of the for loop, you’ll just start with the same values in `upper_byte`, and `lower_byte`. To sequentially output each shifted value, you’ll instead want something like:\n
      \n
      ```\n
      \n
      <span style="color:#323232;">output_value = 0b1\n
      </span><span style="color:#323232;">for i = 1 to 16:\n
      </span><span style="color:#323232;">    latch(low)\n
      </span><span style="color:#323232;">    shift_out(output_value)\n
      </span><span style="color:#323232;">    latch(high)\n
      </span><span style="color:#323232;">    output_value = output_value &lt;&lt; 1\n
      </span>\n
      ```\n
      \n
      That is, if I interpereted correctly that you want the shift registers to output the following:\n
      \n
      ```\n
      \n
      <span style="color:#323232;">output_count, upper_shift_register, lower_shift_register\n
      </span><span style="color:#323232;">1, 00000000, 00000001\n
      </span><span style="color:#323232;">2, 00000000, 00000010\n
      </span><span style="color:#323232;">3, 00000000, 00000100\n
      </span><span style="color:#323232;">.\n
      </span><span style="color:#323232;">.\n
      </span><span style="color:#323232;">.\n
      </span><span style="color:#323232;">16, 10000000, 00000000\n
      </span>\n
      ```\n
      \n
      Note: Lemmy has a bug where it doesn’t format some symbols correctly, so the left angle bracket gets formatted as `&lt;`. The same issue exists for the right angle bracket, the ampersand, and I would presume others.
      """
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      date: 2023-09-28 08:34:54.0 +02:00
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      "323232"
    ]
    +mentions: [
      "@quiescentcurrent@discuss.tchncs.de"
    ]
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      date: 2023-09-28 08:41:55.0 +02:00
    }
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      date: 2023-09-28 01:19:06.0 +02:00
    }
  }
  +root: App\Entity\EntryComment {#4059}
  +body: """
    You’re 100% right, I’ve lost ‘i’ somewhere in my debugging process\n
    \n
    byte upper_byte = input_bin &gt;&gt; (8+i) ; byte lower_byte = (input_bin &gt;&gt; i) &amp; 0x00FF;
    """
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    date: 2023-09-28 08:26:32.0 +02:00
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}
"App\Security\Voter\UserVoter"
App\Entity\EntryComment {#4288
  +user: Proxies\__CG__\App\Entity\User {#1973 …}
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    +user: Proxies\__CG__\App\Entity\User {#1973 …}
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      +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
        ---
        """
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    +image: Proxies\__CG__\App\Entity\Image {#1978 …}
    +domain: Proxies\__CG__\App\Entity\Domain {#1889 …}
    +slug: "Shift-register-missing-bits"
    +title: "Shift register missing bits"
    +url: "https://discuss.tchncs.de/pictrs/image/7da4f08e-8d93-4cf1-99c9-22f2aea08d32.png"
    +body: """
      Hey friends,\n
      \n
      I have a two [daisy chained shift registers](https://i.imgur.com/tZBQ45e.png) ([74AHC595](https://www.diodes.com/assets/Datasheets/74AHC595.pdf)) which are controlled via an ESP32. I want to set one output to high at a time before switching to the next.\n
      \n
      The code seems to work, but the outputs O_9 and O_10 are not [staying high](https://i.imgur.com/v5OOE1K.png) ([zoom](https://i.imgur.com/VpMbdW3.png)) after setting them, whereas all the other ones are working fine. This is the used code snipped:\n
      \n
      ```\n
      \n
      <span style="color:#323232;">pinMode(SHIFT_OUT_DATA, OUTPUT);\n
      </span><span style="color:#323232;">pinMode(SHIFT_OUT_CLK, OUTPUT);\n
      </span><span style="color:#323232;">pinMode(SHIFT_OUT_N_EN, OUTPUT);\n
      </span><span style="color:#323232;">pinMode(SHIFT_OUT_LATCH, OUTPUT);\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">digitalWrite(SHIFT_OUT_N_EN, LOW);\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">uint16_t input_bin = 0b1000000000000000;\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">for(int i=0; i&lt;17; i++){\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">    byte upper_byte = input_bin >> 8;\n
      </span><span style="color:#323232;">    byte lower_byte = input_bin &amp; 0x00FF;\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">    digitalWrite(SHIFT_OUT_LATCH, LOW);\n
      </span><span style="color:#323232;">    shiftDataOut(SHIFT_OUT_DATA, SHIFT_OUT_CLK, MSBFIRST, lower_byte);\n
      </span><span style="color:#323232;">    shiftDataOut(SHIFT_OUT_DATA, SHIFT_OUT_CLK, MSBFIRST, upper_byte);\n
      </span><span style="color:#323232;">    usleep(10);\n
      </span><span style="color:#323232;">    digitalWrite(SHIFT_OUT_LATCH, HIGH);\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">    delay(10)\n
      </span><span style="color:#323232;">    input_bin = input_bin>>1;\n
      </span><span style="color:#323232;">} \n
      </span>\n
      ```\n
      \n
      Is there anything I’m doing wrong, or any idea on where the problem may lie? I’ve already tried looking for shorts and other error sources, but the design was manufactured on a PCB and no assembly issues are noticeable.
      """
    +type: "image"
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    -id: 2357
    -titleTs: "'bit':4 'miss':3 'regist':2 'shift':1"
    -bodyTs: "'/assets/datasheets/74ahc595.pdf))':17 '/tzbq45e.png)':13 '/v5ooe1k.png)':59 '/vpmbdw3.png))':63 '0':116 '0b1000000000000000':112 '0x00ff':131 '1':170 '10':52,158,165 '17':118 '74ahc595':14 '8':125 '9':49 'alreadi':189 'anyth':173 'assembl':208 'bin':111,124,130,167,169 'byte':120,122,126,128,146,156 'chain':8 'clk':89,143,153 'code':41,79 'control':20 'daisi':7 'data':84,140,150 'delay':164 'design':200 'digitalwrit':102,132,159 'en':95,106 'error':196 'esp32':23 'fine':74 'friend':2 'hey':1 'high':31,56,163 'i.imgur.com':12,58,62 'i.imgur.com/tzbq45e.png)':11 'i.imgur.com/v5ooe1k.png)':57 'i.imgur.com/vpmbdw3.png))':61 'idea':180 'input':110,123,129,166,168 'int':114 'issu':209 'latch':100,135,162 'lie':186 'look':191 'low':107,136 'lower':127,145 'm':175 'manufactur':202 'may':185 'msbfirst':144,154 'n':94,105 'next':39 'notic':211 'o':48,51 'one':28,71 'output':29,47,85,90,96,101 'pcb':205 'pinmod':81,86,91,97 'problem':184 'regist':10 'seem':42 'set':27,65 'shift':9,82,87,92,98,103,133,138,141,148,151,160 'shiftdataout':137,147 'short':193 'snip':80 'sourc':197 'stay':55 'switch':36 'time':34 'tri':190 'two':6 'uint16':108 'upper':121,155 'use':78 'usleep':157 've':188 'via':21 'want':25 'wherea':67 'work':44,73 'wrong':177 'www.diodes.com':16 'www.diodes.com/assets/datasheets/74ahc595.pdf))':15 'zoom':60"
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    +editedAt: DateTimeImmutable @1695842569 {#1858
      date: 2023-09-27 21:22:49.0 +02:00
    }
    +createdAt: DateTimeImmutable @1695841461 {#2388
      date: 2023-09-27 21:04:21.0 +02:00
    }
  }
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  +image: null
  +parent: App\Entity\EntryComment {#4059
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    +magazine: App\Entity\Magazine {#264}
    +image: null
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    +body: """
      The first two lines of the for loop,\n
      \n
      ```\n
      \n
      <span style="color:#323232;">byte upper_byte = input_bin >> 8;\n
      </span><span style="color:#323232;">byte lower_byte = input_bin &amp; 0x00FF;\n
      </span>\n
      ```\n
      \n
      don’t really accomplish anything. The first line is bit shifting to the right 8, and then you just bitwise and it resulting in the same thing. For example, starting with `input_bin`:\n
      \n
      ```\n
      \n
      <span style="color:#323232;">1000 0000 0000 0000\n
      </span><span style="color:#323232;">>> 8\n
      </span><span style="color:#323232;">0000 0000 1000 0000\n
      </span><span style="color:#323232;">&amp; 0xFF\n
      </span><span style="color:#323232;">0000 0000 1000 0000\n
      </span>\n
      ```\n
      \n
      So, every time you go through a cycle of the for loop, you’ll just start with the same values in `upper_byte`, and `lower_byte`. To sequentially output each shifted value, you’ll instead want something like:\n
      \n
      ```\n
      \n
      <span style="color:#323232;">output_value = 0b1\n
      </span><span style="color:#323232;">for i = 1 to 16:\n
      </span><span style="color:#323232;">    latch(low)\n
      </span><span style="color:#323232;">    shift_out(output_value)\n
      </span><span style="color:#323232;">    latch(high)\n
      </span><span style="color:#323232;">    output_value = output_value &lt;&lt; 1\n
      </span>\n
      ```\n
      \n
      That is, if I interpereted correctly that you want the shift registers to output the following:\n
      \n
      ```\n
      \n
      <span style="color:#323232;">output_count, upper_shift_register, lower_shift_register\n
      </span><span style="color:#323232;">1, 00000000, 00000001\n
      </span><span style="color:#323232;">2, 00000000, 00000010\n
      </span><span style="color:#323232;">3, 00000000, 00000100\n
      </span><span style="color:#323232;">.\n
      </span><span style="color:#323232;">.\n
      </span><span style="color:#323232;">.\n
      </span><span style="color:#323232;">16, 10000000, 00000000\n
      </span>\n
      ```\n
      \n
      Note: Lemmy has a bug where it doesn’t format some symbols correctly, so the left angle bracket gets formatted as `&lt;`. The same issue exists for the right angle bracket, the ampersand, and I would presume others.
      """
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      date: 2023-09-28 08:41:55.0 +02:00
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      date: 2023-09-28 01:19:06.0 +02:00
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  +root: App\Entity\EntryComment {#4059}
  +body: """
    You’re 100% right, I’ve lost ‘i’ somewhere in my debugging process\n
    \n
    byte upper_byte = input_bin &gt;&gt; (8+i) ; byte lower_byte = (input_bin &gt;&gt; i) &amp; 0x00FF;
    """
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    date: 2023-09-28 08:26:32.0 +02:00
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}
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App\Entity\EntryComment {#4288
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        **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
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        \n
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        ---
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    +domain: Proxies\__CG__\App\Entity\Domain {#1889 …}
    +slug: "Shift-register-missing-bits"
    +title: "Shift register missing bits"
    +url: "https://discuss.tchncs.de/pictrs/image/7da4f08e-8d93-4cf1-99c9-22f2aea08d32.png"
    +body: """
      Hey friends,\n
      \n
      I have a two [daisy chained shift registers](https://i.imgur.com/tZBQ45e.png) ([74AHC595](https://www.diodes.com/assets/Datasheets/74AHC595.pdf)) which are controlled via an ESP32. I want to set one output to high at a time before switching to the next.\n
      \n
      The code seems to work, but the outputs O_9 and O_10 are not [staying high](https://i.imgur.com/v5OOE1K.png) ([zoom](https://i.imgur.com/VpMbdW3.png)) after setting them, whereas all the other ones are working fine. This is the used code snipped:\n
      \n
      ```\n
      \n
      <span style="color:#323232;">pinMode(SHIFT_OUT_DATA, OUTPUT);\n
      </span><span style="color:#323232;">pinMode(SHIFT_OUT_CLK, OUTPUT);\n
      </span><span style="color:#323232;">pinMode(SHIFT_OUT_N_EN, OUTPUT);\n
      </span><span style="color:#323232;">pinMode(SHIFT_OUT_LATCH, OUTPUT);\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">digitalWrite(SHIFT_OUT_N_EN, LOW);\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">uint16_t input_bin = 0b1000000000000000;\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">for(int i=0; i&lt;17; i++){\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">    byte upper_byte = input_bin >> 8;\n
      </span><span style="color:#323232;">    byte lower_byte = input_bin &amp; 0x00FF;\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">    digitalWrite(SHIFT_OUT_LATCH, LOW);\n
      </span><span style="color:#323232;">    shiftDataOut(SHIFT_OUT_DATA, SHIFT_OUT_CLK, MSBFIRST, lower_byte);\n
      </span><span style="color:#323232;">    shiftDataOut(SHIFT_OUT_DATA, SHIFT_OUT_CLK, MSBFIRST, upper_byte);\n
      </span><span style="color:#323232;">    usleep(10);\n
      </span><span style="color:#323232;">    digitalWrite(SHIFT_OUT_LATCH, HIGH);\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">    delay(10)\n
      </span><span style="color:#323232;">    input_bin = input_bin>>1;\n
      </span><span style="color:#323232;">} \n
      </span>\n
      ```\n
      \n
      Is there anything I’m doing wrong, or any idea on where the problem may lie? I’ve already tried looking for shorts and other error sources, but the design was manufactured on a PCB and no assembly issues are noticeable.
      """
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    -id: 2357
    -titleTs: "'bit':4 'miss':3 'regist':2 'shift':1"
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      date: 2023-09-27 21:22:49.0 +02:00
    }
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      date: 2023-09-27 21:04:21.0 +02:00
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  +parent: App\Entity\EntryComment {#4059
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    +entry: App\Entity\Entry {#2413}
    +magazine: App\Entity\Magazine {#264}
    +image: null
    +parent: null
    +root: null
    +body: """
      The first two lines of the for loop,\n
      \n
      ```\n
      \n
      <span style="color:#323232;">byte upper_byte = input_bin >> 8;\n
      </span><span style="color:#323232;">byte lower_byte = input_bin &amp; 0x00FF;\n
      </span>\n
      ```\n
      \n
      don’t really accomplish anything. The first line is bit shifting to the right 8, and then you just bitwise and it resulting in the same thing. For example, starting with `input_bin`:\n
      \n
      ```\n
      \n
      <span style="color:#323232;">1000 0000 0000 0000\n
      </span><span style="color:#323232;">>> 8\n
      </span><span style="color:#323232;">0000 0000 1000 0000\n
      </span><span style="color:#323232;">&amp; 0xFF\n
      </span><span style="color:#323232;">0000 0000 1000 0000\n
      </span>\n
      ```\n
      \n
      So, every time you go through a cycle of the for loop, you’ll just start with the same values in `upper_byte`, and `lower_byte`. To sequentially output each shifted value, you’ll instead want something like:\n
      \n
      ```\n
      \n
      <span style="color:#323232;">output_value = 0b1\n
      </span><span style="color:#323232;">for i = 1 to 16:\n
      </span><span style="color:#323232;">    latch(low)\n
      </span><span style="color:#323232;">    shift_out(output_value)\n
      </span><span style="color:#323232;">    latch(high)\n
      </span><span style="color:#323232;">    output_value = output_value &lt;&lt; 1\n
      </span>\n
      ```\n
      \n
      That is, if I interpereted correctly that you want the shift registers to output the following:\n
      \n
      ```\n
      \n
      <span style="color:#323232;">output_count, upper_shift_register, lower_shift_register\n
      </span><span style="color:#323232;">1, 00000000, 00000001\n
      </span><span style="color:#323232;">2, 00000000, 00000010\n
      </span><span style="color:#323232;">3, 00000000, 00000100\n
      </span><span style="color:#323232;">.\n
      </span><span style="color:#323232;">.\n
      </span><span style="color:#323232;">.\n
      </span><span style="color:#323232;">16, 10000000, 00000000\n
      </span>\n
      ```\n
      \n
      Note: Lemmy has a bug where it doesn’t format some symbols correctly, so the left angle bracket gets formatted as `&lt;`. The same issue exists for the right angle bracket, the ampersand, and I would presume others.
      """
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      "@quiescentcurrent@discuss.tchncs.de"
    ]
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    -bodyTs: "'0000':55,56,57,59,60,62,64,65,67 '00000000':152,155,158,162 '00000001':153 '00000010':156 '00000100':159 '0b1':108 '0x00ff':20 '0xff':63 '1':111,126,151 '1000':54,61,66 '10000000':161 '16':113,160 '2':154 '3':157 '8':14,35,58 'accomplish':24 'ampersand':194 'angl':179,191 'anyth':25 'bin':13,19,53 'bit':30 'bitwis':40 'bracket':180,192 'bug':167 'byte':9,11,15,17,90,93 'correct':132,175 'count':144 'cycl':75 'doesn':170 'everi':69 'exampl':49 'exist':187 'first':2,27 'follow':142 'format':172,182 'get':181 'go':72 'high':121 'input':12,18,52 'instead':102 'interperet':131 'issu':186 'latch':114,120 'left':178 'lemmi':164 'like':105 'line':4,28 'll':81,101 'loop':8,79 'low':115 'lower':16,92,148 'note':163 'other':199 'output':96,106,118,122,124,140,143 'presum':198 'realli':23 'regist':138,147,150 'result':43 'right':34,190 'sequenti':95 'shift':31,98,116,137,146,149 'someth':104 'start':50,83 'symbol':174 'thing':47 'time':70 'two':3 'upper':10,89,145 'valu':87,99,107,119,123,125 'want':103,135 'would':197"
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      date: 2023-09-28 08:41:55.0 +02:00
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      date: 2023-09-28 01:19:06.0 +02:00
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  }
  +root: App\Entity\EntryComment {#4059}
  +body: """
    You’re 100% right, I’ve lost ‘i’ somewhere in my debugging process\n
    \n
    byte upper_byte = input_bin &gt;&gt; (8+i) ; byte lower_byte = (input_bin &gt;&gt; i) &amp; 0x00FF;
    """
  +lang: "en"
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    date: 2023-09-28 08:26:32.0 +02:00
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    "@quiescentcurrent@discuss.tchncs.de"
    "@Kalcifer@lemm.ee"
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    date: 2023-09-28 08:26:32.0 +02:00
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}
"App\Security\Voter\UserVoter"
null
"App\Security\Voter\UserVoter"
App\Entity\EntryComment {#4303
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      +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
        ---
        """
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    }
    +image: Proxies\__CG__\App\Entity\Image {#1978 …}
    +domain: Proxies\__CG__\App\Entity\Domain {#1889 …}
    +slug: "Shift-register-missing-bits"
    +title: "Shift register missing bits"
    +url: "https://discuss.tchncs.de/pictrs/image/7da4f08e-8d93-4cf1-99c9-22f2aea08d32.png"
    +body: """
      Hey friends,\n
      \n
      I have a two [daisy chained shift registers](https://i.imgur.com/tZBQ45e.png) ([74AHC595](https://www.diodes.com/assets/Datasheets/74AHC595.pdf)) which are controlled via an ESP32. I want to set one output to high at a time before switching to the next.\n
      \n
      The code seems to work, but the outputs O_9 and O_10 are not [staying high](https://i.imgur.com/v5OOE1K.png) ([zoom](https://i.imgur.com/VpMbdW3.png)) after setting them, whereas all the other ones are working fine. This is the used code snipped:\n
      \n
      ```\n
      \n
      <span style="color:#323232;">pinMode(SHIFT_OUT_DATA, OUTPUT);\n
      </span><span style="color:#323232;">pinMode(SHIFT_OUT_CLK, OUTPUT);\n
      </span><span style="color:#323232;">pinMode(SHIFT_OUT_N_EN, OUTPUT);\n
      </span><span style="color:#323232;">pinMode(SHIFT_OUT_LATCH, OUTPUT);\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">digitalWrite(SHIFT_OUT_N_EN, LOW);\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">uint16_t input_bin = 0b1000000000000000;\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">for(int i=0; i&lt;17; i++){\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">    byte upper_byte = input_bin >> 8;\n
      </span><span style="color:#323232;">    byte lower_byte = input_bin &amp; 0x00FF;\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">    digitalWrite(SHIFT_OUT_LATCH, LOW);\n
      </span><span style="color:#323232;">    shiftDataOut(SHIFT_OUT_DATA, SHIFT_OUT_CLK, MSBFIRST, lower_byte);\n
      </span><span style="color:#323232;">    shiftDataOut(SHIFT_OUT_DATA, SHIFT_OUT_CLK, MSBFIRST, upper_byte);\n
      </span><span style="color:#323232;">    usleep(10);\n
      </span><span style="color:#323232;">    digitalWrite(SHIFT_OUT_LATCH, HIGH);\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">    delay(10)\n
      </span><span style="color:#323232;">    input_bin = input_bin>>1;\n
      </span><span style="color:#323232;">} \n
      </span>\n
      ```\n
      \n
      Is there anything I’m doing wrong, or any idea on where the problem may lie? I’ve already tried looking for shorts and other error sources, but the design was manufactured on a PCB and no assembly issues are noticeable.
      """
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    +editedAt: DateTimeImmutable @1695842569 {#1858
      date: 2023-09-27 21:22:49.0 +02:00
    }
    +createdAt: DateTimeImmutable @1695841461 {#2388
      date: 2023-09-27 21:04:21.0 +02:00
    }
  }
  +magazine: App\Entity\Magazine {#264}
  +image: null
  +parent: App\Entity\EntryComment {#4059
    +user: App\Entity\User {#4008 …}
    +entry: App\Entity\Entry {#2413}
    +magazine: App\Entity\Magazine {#264}
    +image: null
    +parent: null
    +root: null
    +body: """
      The first two lines of the for loop,\n
      \n
      ```\n
      \n
      <span style="color:#323232;">byte upper_byte = input_bin >> 8;\n
      </span><span style="color:#323232;">byte lower_byte = input_bin &amp; 0x00FF;\n
      </span>\n
      ```\n
      \n
      don’t really accomplish anything. The first line is bit shifting to the right 8, and then you just bitwise and it resulting in the same thing. For example, starting with `input_bin`:\n
      \n
      ```\n
      \n
      <span style="color:#323232;">1000 0000 0000 0000\n
      </span><span style="color:#323232;">>> 8\n
      </span><span style="color:#323232;">0000 0000 1000 0000\n
      </span><span style="color:#323232;">&amp; 0xFF\n
      </span><span style="color:#323232;">0000 0000 1000 0000\n
      </span>\n
      ```\n
      \n
      So, every time you go through a cycle of the for loop, you’ll just start with the same values in `upper_byte`, and `lower_byte`. To sequentially output each shifted value, you’ll instead want something like:\n
      \n
      ```\n
      \n
      <span style="color:#323232;">output_value = 0b1\n
      </span><span style="color:#323232;">for i = 1 to 16:\n
      </span><span style="color:#323232;">    latch(low)\n
      </span><span style="color:#323232;">    shift_out(output_value)\n
      </span><span style="color:#323232;">    latch(high)\n
      </span><span style="color:#323232;">    output_value = output_value &lt;&lt; 1\n
      </span>\n
      ```\n
      \n
      That is, if I interpereted correctly that you want the shift registers to output the following:\n
      \n
      ```\n
      \n
      <span style="color:#323232;">output_count, upper_shift_register, lower_shift_register\n
      </span><span style="color:#323232;">1, 00000000, 00000001\n
      </span><span style="color:#323232;">2, 00000000, 00000010\n
      </span><span style="color:#323232;">3, 00000000, 00000100\n
      </span><span style="color:#323232;">.\n
      </span><span style="color:#323232;">.\n
      </span><span style="color:#323232;">.\n
      </span><span style="color:#323232;">16, 10000000, 00000000\n
      </span>\n
      ```\n
      \n
      Note: Lemmy has a bug where it doesn’t format some symbols correctly, so the left angle bracket gets formatted as `&lt;`. The same issue exists for the right angle bracket, the ampersand, and I would presume others.
      """
    +lang: "en"
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      date: 2023-09-28 08:34:54.0 +02:00
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      "323232"
    ]
    +mentions: [
      "@quiescentcurrent@discuss.tchncs.de"
    ]
    +children: Doctrine\ORM\PersistentCollection {#4057 …}
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      date: 2023-09-28 08:41:55.0 +02:00
    }
    +createdAt: DateTimeImmutable @1695856746 {#4068
      date: 2023-09-28 01:19:06.0 +02:00
    }
  }
  +root: App\Entity\EntryComment {#4059}
  +body: "I think you got and and or switched, first two lines should be fine for shifting the top 8 bits down."
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    "@Kalcifer@lemm.ee"
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    date: 2023-09-28 04:33:23.0 +02:00
  }
}
"App\Security\Voter\UserVoter"
App\Entity\EntryComment {#4303
  +user: App\Entity\User {#4203 …}
  +entry: App\Entity\Entry {#2413
    +user: Proxies\__CG__\App\Entity\User {#1973 …}
    +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
        ---
        """
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    +image: Proxies\__CG__\App\Entity\Image {#1978 …}
    +domain: Proxies\__CG__\App\Entity\Domain {#1889 …}
    +slug: "Shift-register-missing-bits"
    +title: "Shift register missing bits"
    +url: "https://discuss.tchncs.de/pictrs/image/7da4f08e-8d93-4cf1-99c9-22f2aea08d32.png"
    +body: """
      Hey friends,\n
      \n
      I have a two [daisy chained shift registers](https://i.imgur.com/tZBQ45e.png) ([74AHC595](https://www.diodes.com/assets/Datasheets/74AHC595.pdf)) which are controlled via an ESP32. I want to set one output to high at a time before switching to the next.\n
      \n
      The code seems to work, but the outputs O_9 and O_10 are not [staying high](https://i.imgur.com/v5OOE1K.png) ([zoom](https://i.imgur.com/VpMbdW3.png)) after setting them, whereas all the other ones are working fine. This is the used code snipped:\n
      \n
      ```\n
      \n
      <span style="color:#323232;">pinMode(SHIFT_OUT_DATA, OUTPUT);\n
      </span><span style="color:#323232;">pinMode(SHIFT_OUT_CLK, OUTPUT);\n
      </span><span style="color:#323232;">pinMode(SHIFT_OUT_N_EN, OUTPUT);\n
      </span><span style="color:#323232;">pinMode(SHIFT_OUT_LATCH, OUTPUT);\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">digitalWrite(SHIFT_OUT_N_EN, LOW);\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">uint16_t input_bin = 0b1000000000000000;\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">for(int i=0; i&lt;17; i++){\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">    byte upper_byte = input_bin >> 8;\n
      </span><span style="color:#323232;">    byte lower_byte = input_bin &amp; 0x00FF;\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">    digitalWrite(SHIFT_OUT_LATCH, LOW);\n
      </span><span style="color:#323232;">    shiftDataOut(SHIFT_OUT_DATA, SHIFT_OUT_CLK, MSBFIRST, lower_byte);\n
      </span><span style="color:#323232;">    shiftDataOut(SHIFT_OUT_DATA, SHIFT_OUT_CLK, MSBFIRST, upper_byte);\n
      </span><span style="color:#323232;">    usleep(10);\n
      </span><span style="color:#323232;">    digitalWrite(SHIFT_OUT_LATCH, HIGH);\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">    delay(10)\n
      </span><span style="color:#323232;">    input_bin = input_bin>>1;\n
      </span><span style="color:#323232;">} \n
      </span>\n
      ```\n
      \n
      Is there anything I’m doing wrong, or any idea on where the problem may lie? I’ve already tried looking for shorts and other error sources, but the design was manufactured on a PCB and no assembly issues are noticeable.
      """
    +type: "image"
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    -titleTs: "'bit':4 'miss':3 'regist':2 'shift':1"
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      date: 2023-09-27 21:22:49.0 +02:00
    }
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      date: 2023-09-27 21:04:21.0 +02:00
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    +body: """
      The first two lines of the for loop,\n
      \n
      ```\n
      \n
      <span style="color:#323232;">byte upper_byte = input_bin >> 8;\n
      </span><span style="color:#323232;">byte lower_byte = input_bin &amp; 0x00FF;\n
      </span>\n
      ```\n
      \n
      don’t really accomplish anything. The first line is bit shifting to the right 8, and then you just bitwise and it resulting in the same thing. For example, starting with `input_bin`:\n
      \n
      ```\n
      \n
      <span style="color:#323232;">1000 0000 0000 0000\n
      </span><span style="color:#323232;">>> 8\n
      </span><span style="color:#323232;">0000 0000 1000 0000\n
      </span><span style="color:#323232;">&amp; 0xFF\n
      </span><span style="color:#323232;">0000 0000 1000 0000\n
      </span>\n
      ```\n
      \n
      So, every time you go through a cycle of the for loop, you’ll just start with the same values in `upper_byte`, and `lower_byte`. To sequentially output each shifted value, you’ll instead want something like:\n
      \n
      ```\n
      \n
      <span style="color:#323232;">output_value = 0b1\n
      </span><span style="color:#323232;">for i = 1 to 16:\n
      </span><span style="color:#323232;">    latch(low)\n
      </span><span style="color:#323232;">    shift_out(output_value)\n
      </span><span style="color:#323232;">    latch(high)\n
      </span><span style="color:#323232;">    output_value = output_value &lt;&lt; 1\n
      </span>\n
      ```\n
      \n
      That is, if I interpereted correctly that you want the shift registers to output the following:\n
      \n
      ```\n
      \n
      <span style="color:#323232;">output_count, upper_shift_register, lower_shift_register\n
      </span><span style="color:#323232;">1, 00000000, 00000001\n
      </span><span style="color:#323232;">2, 00000000, 00000010\n
      </span><span style="color:#323232;">3, 00000000, 00000100\n
      </span><span style="color:#323232;">.\n
      </span><span style="color:#323232;">.\n
      </span><span style="color:#323232;">.\n
      </span><span style="color:#323232;">16, 10000000, 00000000\n
      </span>\n
      ```\n
      \n
      Note: Lemmy has a bug where it doesn’t format some symbols correctly, so the left angle bracket gets formatted as `&lt;`. The same issue exists for the right angle bracket, the ampersand, and I would presume others.
      """
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  +body: "I think you got and and or switched, first two lines should be fine for shifting the top 8 bits down."
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        **For questions about component-level electronic circuits, tools and equipment.**\n
        \n
        Rules\n
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        \n
        2: Be on-topic (eg: *Electronic*, not *electrical*).\n
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    +slug: "Shift-register-missing-bits"
    +title: "Shift register missing bits"
    +url: "https://discuss.tchncs.de/pictrs/image/7da4f08e-8d93-4cf1-99c9-22f2aea08d32.png"
    +body: """
      Hey friends,\n
      \n
      I have a two [daisy chained shift registers](https://i.imgur.com/tZBQ45e.png) ([74AHC595](https://www.diodes.com/assets/Datasheets/74AHC595.pdf)) which are controlled via an ESP32. I want to set one output to high at a time before switching to the next.\n
      \n
      The code seems to work, but the outputs O_9 and O_10 are not [staying high](https://i.imgur.com/v5OOE1K.png) ([zoom](https://i.imgur.com/VpMbdW3.png)) after setting them, whereas all the other ones are working fine. This is the used code snipped:\n
      \n
      ```\n
      \n
      <span style="color:#323232;">pinMode(SHIFT_OUT_DATA, OUTPUT);\n
      </span><span style="color:#323232;">pinMode(SHIFT_OUT_CLK, OUTPUT);\n
      </span><span style="color:#323232;">pinMode(SHIFT_OUT_N_EN, OUTPUT);\n
      </span><span style="color:#323232;">pinMode(SHIFT_OUT_LATCH, OUTPUT);\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">digitalWrite(SHIFT_OUT_N_EN, LOW);\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">uint16_t input_bin = 0b1000000000000000;\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">for(int i=0; i&lt;17; i++){\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">    byte upper_byte = input_bin >> 8;\n
      </span><span style="color:#323232;">    byte lower_byte = input_bin &amp; 0x00FF;\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">    digitalWrite(SHIFT_OUT_LATCH, LOW);\n
      </span><span style="color:#323232;">    shiftDataOut(SHIFT_OUT_DATA, SHIFT_OUT_CLK, MSBFIRST, lower_byte);\n
      </span><span style="color:#323232;">    shiftDataOut(SHIFT_OUT_DATA, SHIFT_OUT_CLK, MSBFIRST, upper_byte);\n
      </span><span style="color:#323232;">    usleep(10);\n
      </span><span style="color:#323232;">    digitalWrite(SHIFT_OUT_LATCH, HIGH);\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">    delay(10)\n
      </span><span style="color:#323232;">    input_bin = input_bin>>1;\n
      </span><span style="color:#323232;">} \n
      </span>\n
      ```\n
      \n
      Is there anything I’m doing wrong, or any idea on where the problem may lie? I’ve already tried looking for shorts and other error sources, but the design was manufactured on a PCB and no assembly issues are noticeable.
      """
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      date: 2023-09-27 21:22:49.0 +02:00
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    +image: null
    +parent: null
    +root: null
    +body: """
      The first two lines of the for loop,\n
      \n
      ```\n
      \n
      <span style="color:#323232;">byte upper_byte = input_bin >> 8;\n
      </span><span style="color:#323232;">byte lower_byte = input_bin &amp; 0x00FF;\n
      </span>\n
      ```\n
      \n
      don’t really accomplish anything. The first line is bit shifting to the right 8, and then you just bitwise and it resulting in the same thing. For example, starting with `input_bin`:\n
      \n
      ```\n
      \n
      <span style="color:#323232;">1000 0000 0000 0000\n
      </span><span style="color:#323232;">>> 8\n
      </span><span style="color:#323232;">0000 0000 1000 0000\n
      </span><span style="color:#323232;">&amp; 0xFF\n
      </span><span style="color:#323232;">0000 0000 1000 0000\n
      </span>\n
      ```\n
      \n
      So, every time you go through a cycle of the for loop, you’ll just start with the same values in `upper_byte`, and `lower_byte`. To sequentially output each shifted value, you’ll instead want something like:\n
      \n
      ```\n
      \n
      <span style="color:#323232;">output_value = 0b1\n
      </span><span style="color:#323232;">for i = 1 to 16:\n
      </span><span style="color:#323232;">    latch(low)\n
      </span><span style="color:#323232;">    shift_out(output_value)\n
      </span><span style="color:#323232;">    latch(high)\n
      </span><span style="color:#323232;">    output_value = output_value &lt;&lt; 1\n
      </span>\n
      ```\n
      \n
      That is, if I interpereted correctly that you want the shift registers to output the following:\n
      \n
      ```\n
      \n
      <span style="color:#323232;">output_count, upper_shift_register, lower_shift_register\n
      </span><span style="color:#323232;">1, 00000000, 00000001\n
      </span><span style="color:#323232;">2, 00000000, 00000010\n
      </span><span style="color:#323232;">3, 00000000, 00000100\n
      </span><span style="color:#323232;">.\n
      </span><span style="color:#323232;">.\n
      </span><span style="color:#323232;">.\n
      </span><span style="color:#323232;">16, 10000000, 00000000\n
      </span>\n
      ```\n
      \n
      Note: Lemmy has a bug where it doesn’t format some symbols correctly, so the left angle bracket gets formatted as `&lt;`. The same issue exists for the right angle bracket, the ampersand, and I would presume others.
      """
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  +body: "I think you got and and or switched, first two lines should be fine for shifting the top 8 bits down."
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}
"App\Security\Voter\UserVoter"
null
"App\Security\Voter\UserVoter"
App\Entity\EntryComment {#4337
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      +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
        ---
        """
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    +image: Proxies\__CG__\App\Entity\Image {#1978 …}
    +domain: Proxies\__CG__\App\Entity\Domain {#1889 …}
    +slug: "Shift-register-missing-bits"
    +title: "Shift register missing bits"
    +url: "https://discuss.tchncs.de/pictrs/image/7da4f08e-8d93-4cf1-99c9-22f2aea08d32.png"
    +body: """
      Hey friends,\n
      \n
      I have a two [daisy chained shift registers](https://i.imgur.com/tZBQ45e.png) ([74AHC595](https://www.diodes.com/assets/Datasheets/74AHC595.pdf)) which are controlled via an ESP32. I want to set one output to high at a time before switching to the next.\n
      \n
      The code seems to work, but the outputs O_9 and O_10 are not [staying high](https://i.imgur.com/v5OOE1K.png) ([zoom](https://i.imgur.com/VpMbdW3.png)) after setting them, whereas all the other ones are working fine. This is the used code snipped:\n
      \n
      ```\n
      \n
      <span style="color:#323232;">pinMode(SHIFT_OUT_DATA, OUTPUT);\n
      </span><span style="color:#323232;">pinMode(SHIFT_OUT_CLK, OUTPUT);\n
      </span><span style="color:#323232;">pinMode(SHIFT_OUT_N_EN, OUTPUT);\n
      </span><span style="color:#323232;">pinMode(SHIFT_OUT_LATCH, OUTPUT);\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">digitalWrite(SHIFT_OUT_N_EN, LOW);\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">uint16_t input_bin = 0b1000000000000000;\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">for(int i=0; i&lt;17; i++){\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">    byte upper_byte = input_bin >> 8;\n
      </span><span style="color:#323232;">    byte lower_byte = input_bin &amp; 0x00FF;\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">    digitalWrite(SHIFT_OUT_LATCH, LOW);\n
      </span><span style="color:#323232;">    shiftDataOut(SHIFT_OUT_DATA, SHIFT_OUT_CLK, MSBFIRST, lower_byte);\n
      </span><span style="color:#323232;">    shiftDataOut(SHIFT_OUT_DATA, SHIFT_OUT_CLK, MSBFIRST, upper_byte);\n
      </span><span style="color:#323232;">    usleep(10);\n
      </span><span style="color:#323232;">    digitalWrite(SHIFT_OUT_LATCH, HIGH);\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">    delay(10)\n
      </span><span style="color:#323232;">    input_bin = input_bin>>1;\n
      </span><span style="color:#323232;">} \n
      </span>\n
      ```\n
      \n
      Is there anything I’m doing wrong, or any idea on where the problem may lie? I’ve already tried looking for shorts and other error sources, but the design was manufactured on a PCB and no assembly issues are noticeable.
      """
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    +editedAt: DateTimeImmutable @1695842569 {#1858
      date: 2023-09-27 21:22:49.0 +02:00
    }
    +createdAt: DateTimeImmutable @1695841461 {#2388
      date: 2023-09-27 21:04:21.0 +02:00
    }
  }
  +magazine: App\Entity\Magazine {#264}
  +image: null
  +parent: App\Entity\EntryComment {#4303
    +user: App\Entity\User {#4203 …}
    +entry: App\Entity\Entry {#2413}
    +magazine: App\Entity\Magazine {#264}
    +image: null
    +parent: App\Entity\EntryComment {#4059
      +user: App\Entity\User {#4008 …}
      +entry: App\Entity\Entry {#2413}
      +magazine: App\Entity\Magazine {#264}
      +image: null
      +parent: null
      +root: null
      +body: """
        The first two lines of the for loop,\n
        \n
        ```\n
        \n
        <span style="color:#323232;">byte upper_byte = input_bin >> 8;\n
        </span><span style="color:#323232;">byte lower_byte = input_bin &amp; 0x00FF;\n
        </span>\n
        ```\n
        \n
        don’t really accomplish anything. The first line is bit shifting to the right 8, and then you just bitwise and it resulting in the same thing. For example, starting with `input_bin`:\n
        \n
        ```\n
        \n
        <span style="color:#323232;">1000 0000 0000 0000\n
        </span><span style="color:#323232;">>> 8\n
        </span><span style="color:#323232;">0000 0000 1000 0000\n
        </span><span style="color:#323232;">&amp; 0xFF\n
        </span><span style="color:#323232;">0000 0000 1000 0000\n
        </span>\n
        ```\n
        \n
        So, every time you go through a cycle of the for loop, you’ll just start with the same values in `upper_byte`, and `lower_byte`. To sequentially output each shifted value, you’ll instead want something like:\n
        \n
        ```\n
        \n
        <span style="color:#323232;">output_value = 0b1\n
        </span><span style="color:#323232;">for i = 1 to 16:\n
        </span><span style="color:#323232;">    latch(low)\n
        </span><span style="color:#323232;">    shift_out(output_value)\n
        </span><span style="color:#323232;">    latch(high)\n
        </span><span style="color:#323232;">    output_value = output_value &lt;&lt; 1\n
        </span>\n
        ```\n
        \n
        That is, if I interpereted correctly that you want the shift registers to output the following:\n
        \n
        ```\n
        \n
        <span style="color:#323232;">output_count, upper_shift_register, lower_shift_register\n
        </span><span style="color:#323232;">1, 00000000, 00000001\n
        </span><span style="color:#323232;">2, 00000000, 00000010\n
        </span><span style="color:#323232;">3, 00000000, 00000100\n
        </span><span style="color:#323232;">.\n
        </span><span style="color:#323232;">.\n
        </span><span style="color:#323232;">.\n
        </span><span style="color:#323232;">16, 10000000, 00000000\n
        </span>\n
        ```\n
        \n
        Note: Lemmy has a bug where it doesn’t format some symbols correctly, so the left angle bracket gets formatted as `&lt;`. The same issue exists for the right angle bracket, the ampersand, and I would presume others.
        """
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        "323232"
      ]
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        "@quiescentcurrent@discuss.tchncs.de"
      ]
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        date: 2023-09-28 08:41:55.0 +02:00
      }
      +createdAt: DateTimeImmutable @1695856746 {#4068
        date: 2023-09-28 01:19:06.0 +02:00
      }
    }
    +root: App\Entity\EntryComment {#4059}
    +body: "I think you got and and or switched, first two lines should be fine for shifting the top 8 bits down."
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      "@Kalcifer@lemm.ee"
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      date: 2023-09-28 04:33:23.0 +02:00
    }
  }
  +root: App\Entity\EntryComment {#4059}
  +body: "I don’t follow what you mean."
  +lang: "en"
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  +favouriteCount: 1
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    "@Kalcifer@lemm.ee"
    "@mvirts@lemmy.world"
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}
"App\Security\Voter\UserVoter"
App\Entity\EntryComment {#4337
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      +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
        ---
        """
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    +image: Proxies\__CG__\App\Entity\Image {#1978 …}
    +domain: Proxies\__CG__\App\Entity\Domain {#1889 …}
    +slug: "Shift-register-missing-bits"
    +title: "Shift register missing bits"
    +url: "https://discuss.tchncs.de/pictrs/image/7da4f08e-8d93-4cf1-99c9-22f2aea08d32.png"
    +body: """
      Hey friends,\n
      \n
      I have a two [daisy chained shift registers](https://i.imgur.com/tZBQ45e.png) ([74AHC595](https://www.diodes.com/assets/Datasheets/74AHC595.pdf)) which are controlled via an ESP32. I want to set one output to high at a time before switching to the next.\n
      \n
      The code seems to work, but the outputs O_9 and O_10 are not [staying high](https://i.imgur.com/v5OOE1K.png) ([zoom](https://i.imgur.com/VpMbdW3.png)) after setting them, whereas all the other ones are working fine. This is the used code snipped:\n
      \n
      ```\n
      \n
      <span style="color:#323232;">pinMode(SHIFT_OUT_DATA, OUTPUT);\n
      </span><span style="color:#323232;">pinMode(SHIFT_OUT_CLK, OUTPUT);\n
      </span><span style="color:#323232;">pinMode(SHIFT_OUT_N_EN, OUTPUT);\n
      </span><span style="color:#323232;">pinMode(SHIFT_OUT_LATCH, OUTPUT);\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">digitalWrite(SHIFT_OUT_N_EN, LOW);\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">uint16_t input_bin = 0b1000000000000000;\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">for(int i=0; i&lt;17; i++){\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">    byte upper_byte = input_bin >> 8;\n
      </span><span style="color:#323232;">    byte lower_byte = input_bin &amp; 0x00FF;\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">    digitalWrite(SHIFT_OUT_LATCH, LOW);\n
      </span><span style="color:#323232;">    shiftDataOut(SHIFT_OUT_DATA, SHIFT_OUT_CLK, MSBFIRST, lower_byte);\n
      </span><span style="color:#323232;">    shiftDataOut(SHIFT_OUT_DATA, SHIFT_OUT_CLK, MSBFIRST, upper_byte);\n
      </span><span style="color:#323232;">    usleep(10);\n
      </span><span style="color:#323232;">    digitalWrite(SHIFT_OUT_LATCH, HIGH);\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">    delay(10)\n
      </span><span style="color:#323232;">    input_bin = input_bin>>1;\n
      </span><span style="color:#323232;">} \n
      </span>\n
      ```\n
      \n
      Is there anything I’m doing wrong, or any idea on where the problem may lie? I’ve already tried looking for shorts and other error sources, but the design was manufactured on a PCB and no assembly issues are noticeable.
      """
    +type: "image"
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    +editedAt: DateTimeImmutable @1695842569 {#1858
      date: 2023-09-27 21:22:49.0 +02:00
    }
    +createdAt: DateTimeImmutable @1695841461 {#2388
      date: 2023-09-27 21:04:21.0 +02:00
    }
  }
  +magazine: App\Entity\Magazine {#264}
  +image: null
  +parent: App\Entity\EntryComment {#4303
    +user: App\Entity\User {#4203 …}
    +entry: App\Entity\Entry {#2413}
    +magazine: App\Entity\Magazine {#264}
    +image: null
    +parent: App\Entity\EntryComment {#4059
      +user: App\Entity\User {#4008 …}
      +entry: App\Entity\Entry {#2413}
      +magazine: App\Entity\Magazine {#264}
      +image: null
      +parent: null
      +root: null
      +body: """
        The first two lines of the for loop,\n
        \n
        ```\n
        \n
        <span style="color:#323232;">byte upper_byte = input_bin >> 8;\n
        </span><span style="color:#323232;">byte lower_byte = input_bin &amp; 0x00FF;\n
        </span>\n
        ```\n
        \n
        don’t really accomplish anything. The first line is bit shifting to the right 8, and then you just bitwise and it resulting in the same thing. For example, starting with `input_bin`:\n
        \n
        ```\n
        \n
        <span style="color:#323232;">1000 0000 0000 0000\n
        </span><span style="color:#323232;">>> 8\n
        </span><span style="color:#323232;">0000 0000 1000 0000\n
        </span><span style="color:#323232;">&amp; 0xFF\n
        </span><span style="color:#323232;">0000 0000 1000 0000\n
        </span>\n
        ```\n
        \n
        So, every time you go through a cycle of the for loop, you’ll just start with the same values in `upper_byte`, and `lower_byte`. To sequentially output each shifted value, you’ll instead want something like:\n
        \n
        ```\n
        \n
        <span style="color:#323232;">output_value = 0b1\n
        </span><span style="color:#323232;">for i = 1 to 16:\n
        </span><span style="color:#323232;">    latch(low)\n
        </span><span style="color:#323232;">    shift_out(output_value)\n
        </span><span style="color:#323232;">    latch(high)\n
        </span><span style="color:#323232;">    output_value = output_value &lt;&lt; 1\n
        </span>\n
        ```\n
        \n
        That is, if I interpereted correctly that you want the shift registers to output the following:\n
        \n
        ```\n
        \n
        <span style="color:#323232;">output_count, upper_shift_register, lower_shift_register\n
        </span><span style="color:#323232;">1, 00000000, 00000001\n
        </span><span style="color:#323232;">2, 00000000, 00000010\n
        </span><span style="color:#323232;">3, 00000000, 00000100\n
        </span><span style="color:#323232;">.\n
        </span><span style="color:#323232;">.\n
        </span><span style="color:#323232;">.\n
        </span><span style="color:#323232;">16, 10000000, 00000000\n
        </span>\n
        ```\n
        \n
        Note: Lemmy has a bug where it doesn’t format some symbols correctly, so the left angle bracket gets formatted as `&lt;`. The same issue exists for the right angle bracket, the ampersand, and I would presume others.
        """
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        "323232"
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        "@quiescentcurrent@discuss.tchncs.de"
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        date: 2023-09-28 08:41:55.0 +02:00
      }
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        date: 2023-09-28 01:19:06.0 +02:00
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    }
    +root: App\Entity\EntryComment {#4059}
    +body: "I think you got and and or switched, first two lines should be fine for shifting the top 8 bits down."
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      date: 2023-09-28 04:33:23.0 +02:00
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  }
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  +body: "I don’t follow what you mean."
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App\Entity\EntryComment {#4337
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        **For questions about component-level electronic circuits, tools and equipment.**\n
        \n
        Rules\n
        -----\n
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        1: Be nice.\n
        \n
        2: Be on-topic (eg: *Electronic*, not *electrical*).\n
        \n
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        \n
        4: Be safe.\n
        \n
        ---
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    +image: Proxies\__CG__\App\Entity\Image {#1978 …}
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    +slug: "Shift-register-missing-bits"
    +title: "Shift register missing bits"
    +url: "https://discuss.tchncs.de/pictrs/image/7da4f08e-8d93-4cf1-99c9-22f2aea08d32.png"
    +body: """
      Hey friends,\n
      \n
      I have a two [daisy chained shift registers](https://i.imgur.com/tZBQ45e.png) ([74AHC595](https://www.diodes.com/assets/Datasheets/74AHC595.pdf)) which are controlled via an ESP32. I want to set one output to high at a time before switching to the next.\n
      \n
      The code seems to work, but the outputs O_9 and O_10 are not [staying high](https://i.imgur.com/v5OOE1K.png) ([zoom](https://i.imgur.com/VpMbdW3.png)) after setting them, whereas all the other ones are working fine. This is the used code snipped:\n
      \n
      ```\n
      \n
      <span style="color:#323232;">pinMode(SHIFT_OUT_DATA, OUTPUT);\n
      </span><span style="color:#323232;">pinMode(SHIFT_OUT_CLK, OUTPUT);\n
      </span><span style="color:#323232;">pinMode(SHIFT_OUT_N_EN, OUTPUT);\n
      </span><span style="color:#323232;">pinMode(SHIFT_OUT_LATCH, OUTPUT);\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">digitalWrite(SHIFT_OUT_N_EN, LOW);\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">uint16_t input_bin = 0b1000000000000000;\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">for(int i=0; i&lt;17; i++){\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">    byte upper_byte = input_bin >> 8;\n
      </span><span style="color:#323232;">    byte lower_byte = input_bin &amp; 0x00FF;\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">    digitalWrite(SHIFT_OUT_LATCH, LOW);\n
      </span><span style="color:#323232;">    shiftDataOut(SHIFT_OUT_DATA, SHIFT_OUT_CLK, MSBFIRST, lower_byte);\n
      </span><span style="color:#323232;">    shiftDataOut(SHIFT_OUT_DATA, SHIFT_OUT_CLK, MSBFIRST, upper_byte);\n
      </span><span style="color:#323232;">    usleep(10);\n
      </span><span style="color:#323232;">    digitalWrite(SHIFT_OUT_LATCH, HIGH);\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">    delay(10)\n
      </span><span style="color:#323232;">    input_bin = input_bin>>1;\n
      </span><span style="color:#323232;">} \n
      </span>\n
      ```\n
      \n
      Is there anything I’m doing wrong, or any idea on where the problem may lie? I’ve already tried looking for shorts and other error sources, but the design was manufactured on a PCB and no assembly issues are noticeable.
      """
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      date: 2023-09-27 21:22:49.0 +02:00
    }
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      date: 2023-09-27 21:04:21.0 +02:00
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  +magazine: App\Entity\Magazine {#264}
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  +parent: App\Entity\EntryComment {#4303
    +user: App\Entity\User {#4203 …}
    +entry: App\Entity\Entry {#2413}
    +magazine: App\Entity\Magazine {#264}
    +image: null
    +parent: App\Entity\EntryComment {#4059
      +user: App\Entity\User {#4008 …}
      +entry: App\Entity\Entry {#2413}
      +magazine: App\Entity\Magazine {#264}
      +image: null
      +parent: null
      +root: null
      +body: """
        The first two lines of the for loop,\n
        \n
        ```\n
        \n
        <span style="color:#323232;">byte upper_byte = input_bin >> 8;\n
        </span><span style="color:#323232;">byte lower_byte = input_bin &amp; 0x00FF;\n
        </span>\n
        ```\n
        \n
        don’t really accomplish anything. The first line is bit shifting to the right 8, and then you just bitwise and it resulting in the same thing. For example, starting with `input_bin`:\n
        \n
        ```\n
        \n
        <span style="color:#323232;">1000 0000 0000 0000\n
        </span><span style="color:#323232;">>> 8\n
        </span><span style="color:#323232;">0000 0000 1000 0000\n
        </span><span style="color:#323232;">&amp; 0xFF\n
        </span><span style="color:#323232;">0000 0000 1000 0000\n
        </span>\n
        ```\n
        \n
        So, every time you go through a cycle of the for loop, you’ll just start with the same values in `upper_byte`, and `lower_byte`. To sequentially output each shifted value, you’ll instead want something like:\n
        \n
        ```\n
        \n
        <span style="color:#323232;">output_value = 0b1\n
        </span><span style="color:#323232;">for i = 1 to 16:\n
        </span><span style="color:#323232;">    latch(low)\n
        </span><span style="color:#323232;">    shift_out(output_value)\n
        </span><span style="color:#323232;">    latch(high)\n
        </span><span style="color:#323232;">    output_value = output_value &lt;&lt; 1\n
        </span>\n
        ```\n
        \n
        That is, if I interpereted correctly that you want the shift registers to output the following:\n
        \n
        ```\n
        \n
        <span style="color:#323232;">output_count, upper_shift_register, lower_shift_register\n
        </span><span style="color:#323232;">1, 00000000, 00000001\n
        </span><span style="color:#323232;">2, 00000000, 00000010\n
        </span><span style="color:#323232;">3, 00000000, 00000100\n
        </span><span style="color:#323232;">.\n
        </span><span style="color:#323232;">.\n
        </span><span style="color:#323232;">.\n
        </span><span style="color:#323232;">16, 10000000, 00000000\n
        </span>\n
        ```\n
        \n
        Note: Lemmy has a bug where it doesn’t format some symbols correctly, so the left angle bracket gets formatted as `&lt;`. The same issue exists for the right angle bracket, the ampersand, and I would presume others.
        """
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      ]
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        date: 2023-09-28 01:19:06.0 +02:00
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    }
    +root: App\Entity\EntryComment {#4059}
    +body: "I think you got and and or switched, first two lines should be fine for shifting the top 8 bits down."
    +lang: "en"
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      "@Kalcifer@lemm.ee"
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"App\Security\Voter\UserVoter"
null
"App\Security\Voter\UserVoter"
App\Entity\EntryComment {#4394
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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
        ---
        """
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    +slug: "Shift-register-missing-bits"
    +title: "Shift register missing bits"
    +url: "https://discuss.tchncs.de/pictrs/image/7da4f08e-8d93-4cf1-99c9-22f2aea08d32.png"
    +body: """
      Hey friends,\n
      \n
      I have a two [daisy chained shift registers](https://i.imgur.com/tZBQ45e.png) ([74AHC595](https://www.diodes.com/assets/Datasheets/74AHC595.pdf)) which are controlled via an ESP32. I want to set one output to high at a time before switching to the next.\n
      \n
      The code seems to work, but the outputs O_9 and O_10 are not [staying high](https://i.imgur.com/v5OOE1K.png) ([zoom](https://i.imgur.com/VpMbdW3.png)) after setting them, whereas all the other ones are working fine. This is the used code snipped:\n
      \n
      ```\n
      \n
      <span style="color:#323232;">pinMode(SHIFT_OUT_DATA, OUTPUT);\n
      </span><span style="color:#323232;">pinMode(SHIFT_OUT_CLK, OUTPUT);\n
      </span><span style="color:#323232;">pinMode(SHIFT_OUT_N_EN, OUTPUT);\n
      </span><span style="color:#323232;">pinMode(SHIFT_OUT_LATCH, OUTPUT);\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">digitalWrite(SHIFT_OUT_N_EN, LOW);\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">uint16_t input_bin = 0b1000000000000000;\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">for(int i=0; i&lt;17; i++){\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">    byte upper_byte = input_bin >> 8;\n
      </span><span style="color:#323232;">    byte lower_byte = input_bin &amp; 0x00FF;\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">    digitalWrite(SHIFT_OUT_LATCH, LOW);\n
      </span><span style="color:#323232;">    shiftDataOut(SHIFT_OUT_DATA, SHIFT_OUT_CLK, MSBFIRST, lower_byte);\n
      </span><span style="color:#323232;">    shiftDataOut(SHIFT_OUT_DATA, SHIFT_OUT_CLK, MSBFIRST, upper_byte);\n
      </span><span style="color:#323232;">    usleep(10);\n
      </span><span style="color:#323232;">    digitalWrite(SHIFT_OUT_LATCH, HIGH);\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">    delay(10)\n
      </span><span style="color:#323232;">    input_bin = input_bin>>1;\n
      </span><span style="color:#323232;">} \n
      </span>\n
      ```\n
      \n
      Is there anything I’m doing wrong, or any idea on where the problem may lie? I’ve already tried looking for shorts and other error sources, but the design was manufactured on a PCB and no assembly issues are noticeable.
      """
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      date: 2023-09-27 21:22:49.0 +02:00
    }
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      date: 2023-09-27 21:04:21.0 +02:00
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  }
  +magazine: App\Entity\Magazine {#264}
  +image: null
  +parent: App\Entity\EntryComment {#4337
    +user: App\Entity\User {#4008 …}
    +entry: App\Entity\Entry {#2413}
    +magazine: App\Entity\Magazine {#264}
    +image: null
    +parent: App\Entity\EntryComment {#4303
      +user: App\Entity\User {#4203 …}
      +entry: App\Entity\Entry {#2413}
      +magazine: App\Entity\Magazine {#264}
      +image: null
      +parent: App\Entity\EntryComment {#4059
        +user: App\Entity\User {#4008 …}
        +entry: App\Entity\Entry {#2413}
        +magazine: App\Entity\Magazine {#264}
        +image: null
        +parent: null
        +root: null
        +body: """
          The first two lines of the for loop,\n
          \n
          ```\n
          \n
          <span style="color:#323232;">byte upper_byte = input_bin >> 8;\n
          </span><span style="color:#323232;">byte lower_byte = input_bin &amp; 0x00FF;\n
          </span>\n
          ```\n
          \n
          don’t really accomplish anything. The first line is bit shifting to the right 8, and then you just bitwise and it resulting in the same thing. For example, starting with `input_bin`:\n
          \n
          ```\n
          \n
          <span style="color:#323232;">1000 0000 0000 0000\n
          </span><span style="color:#323232;">>> 8\n
          </span><span style="color:#323232;">0000 0000 1000 0000\n
          </span><span style="color:#323232;">&amp; 0xFF\n
          </span><span style="color:#323232;">0000 0000 1000 0000\n
          </span>\n
          ```\n
          \n
          So, every time you go through a cycle of the for loop, you’ll just start with the same values in `upper_byte`, and `lower_byte`. To sequentially output each shifted value, you’ll instead want something like:\n
          \n
          ```\n
          \n
          <span style="color:#323232;">output_value = 0b1\n
          </span><span style="color:#323232;">for i = 1 to 16:\n
          </span><span style="color:#323232;">    latch(low)\n
          </span><span style="color:#323232;">    shift_out(output_value)\n
          </span><span style="color:#323232;">    latch(high)\n
          </span><span style="color:#323232;">    output_value = output_value &lt;&lt; 1\n
          </span>\n
          ```\n
          \n
          That is, if I interpereted correctly that you want the shift registers to output the following:\n
          \n
          ```\n
          \n
          <span style="color:#323232;">output_count, upper_shift_register, lower_shift_register\n
          </span><span style="color:#323232;">1, 00000000, 00000001\n
          </span><span style="color:#323232;">2, 00000000, 00000010\n
          </span><span style="color:#323232;">3, 00000000, 00000100\n
          </span><span style="color:#323232;">.\n
          </span><span style="color:#323232;">.\n
          </span><span style="color:#323232;">.\n
          </span><span style="color:#323232;">16, 10000000, 00000000\n
          </span>\n
          ```\n
          \n
          Note: Lemmy has a bug where it doesn’t format some symbols correctly, so the left angle bracket gets formatted as `&lt;`. The same issue exists for the right angle bracket, the ampersand, and I would presume others.
          """
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          "323232"
        ]
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          "@quiescentcurrent@discuss.tchncs.de"
        ]
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      +body: "I think you got and and or switched, first two lines should be fine for shifting the top 8 bits down."
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  +root: App\Entity\EntryComment {#4059}
  +body: "I think what he refers to is that you seem to do a bitwise or for the second line instead of the bitwise and."
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}
"App\Security\Voter\UserVoter"
App\Entity\EntryComment {#4394
  +user: App\Entity\User {#4070 …}
  +entry: App\Entity\Entry {#2413
    +user: Proxies\__CG__\App\Entity\User {#1973 …}
    +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
        ---
        """
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    +image: Proxies\__CG__\App\Entity\Image {#1978 …}
    +domain: Proxies\__CG__\App\Entity\Domain {#1889 …}
    +slug: "Shift-register-missing-bits"
    +title: "Shift register missing bits"
    +url: "https://discuss.tchncs.de/pictrs/image/7da4f08e-8d93-4cf1-99c9-22f2aea08d32.png"
    +body: """
      Hey friends,\n
      \n
      I have a two [daisy chained shift registers](https://i.imgur.com/tZBQ45e.png) ([74AHC595](https://www.diodes.com/assets/Datasheets/74AHC595.pdf)) which are controlled via an ESP32. I want to set one output to high at a time before switching to the next.\n
      \n
      The code seems to work, but the outputs O_9 and O_10 are not [staying high](https://i.imgur.com/v5OOE1K.png) ([zoom](https://i.imgur.com/VpMbdW3.png)) after setting them, whereas all the other ones are working fine. This is the used code snipped:\n
      \n
      ```\n
      \n
      <span style="color:#323232;">pinMode(SHIFT_OUT_DATA, OUTPUT);\n
      </span><span style="color:#323232;">pinMode(SHIFT_OUT_CLK, OUTPUT);\n
      </span><span style="color:#323232;">pinMode(SHIFT_OUT_N_EN, OUTPUT);\n
      </span><span style="color:#323232;">pinMode(SHIFT_OUT_LATCH, OUTPUT);\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">digitalWrite(SHIFT_OUT_N_EN, LOW);\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">uint16_t input_bin = 0b1000000000000000;\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">for(int i=0; i&lt;17; i++){\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">    byte upper_byte = input_bin >> 8;\n
      </span><span style="color:#323232;">    byte lower_byte = input_bin &amp; 0x00FF;\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">    digitalWrite(SHIFT_OUT_LATCH, LOW);\n
      </span><span style="color:#323232;">    shiftDataOut(SHIFT_OUT_DATA, SHIFT_OUT_CLK, MSBFIRST, lower_byte);\n
      </span><span style="color:#323232;">    shiftDataOut(SHIFT_OUT_DATA, SHIFT_OUT_CLK, MSBFIRST, upper_byte);\n
      </span><span style="color:#323232;">    usleep(10);\n
      </span><span style="color:#323232;">    digitalWrite(SHIFT_OUT_LATCH, HIGH);\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">    delay(10)\n
      </span><span style="color:#323232;">    input_bin = input_bin>>1;\n
      </span><span style="color:#323232;">} \n
      </span>\n
      ```\n
      \n
      Is there anything I’m doing wrong, or any idea on where the problem may lie? I’ve already tried looking for shorts and other error sources, but the design was manufactured on a PCB and no assembly issues are noticeable.
      """
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    -titleTs: "'bit':4 'miss':3 'regist':2 'shift':1"
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      date: 2023-09-27 21:22:49.0 +02:00
    }
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      date: 2023-09-27 21:04:21.0 +02:00
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  }
  +magazine: App\Entity\Magazine {#264}
  +image: null
  +parent: App\Entity\EntryComment {#4337
    +user: App\Entity\User {#4008 …}
    +entry: App\Entity\Entry {#2413}
    +magazine: App\Entity\Magazine {#264}
    +image: null
    +parent: App\Entity\EntryComment {#4303
      +user: App\Entity\User {#4203 …}
      +entry: App\Entity\Entry {#2413}
      +magazine: App\Entity\Magazine {#264}
      +image: null
      +parent: App\Entity\EntryComment {#4059
        +user: App\Entity\User {#4008 …}
        +entry: App\Entity\Entry {#2413}
        +magazine: App\Entity\Magazine {#264}
        +image: null
        +parent: null
        +root: null
        +body: """
          The first two lines of the for loop,\n
          \n
          ```\n
          \n
          <span style="color:#323232;">byte upper_byte = input_bin >> 8;\n
          </span><span style="color:#323232;">byte lower_byte = input_bin &amp; 0x00FF;\n
          </span>\n
          ```\n
          \n
          don’t really accomplish anything. The first line is bit shifting to the right 8, and then you just bitwise and it resulting in the same thing. For example, starting with `input_bin`:\n
          \n
          ```\n
          \n
          <span style="color:#323232;">1000 0000 0000 0000\n
          </span><span style="color:#323232;">>> 8\n
          </span><span style="color:#323232;">0000 0000 1000 0000\n
          </span><span style="color:#323232;">&amp; 0xFF\n
          </span><span style="color:#323232;">0000 0000 1000 0000\n
          </span>\n
          ```\n
          \n
          So, every time you go through a cycle of the for loop, you’ll just start with the same values in `upper_byte`, and `lower_byte`. To sequentially output each shifted value, you’ll instead want something like:\n
          \n
          ```\n
          \n
          <span style="color:#323232;">output_value = 0b1\n
          </span><span style="color:#323232;">for i = 1 to 16:\n
          </span><span style="color:#323232;">    latch(low)\n
          </span><span style="color:#323232;">    shift_out(output_value)\n
          </span><span style="color:#323232;">    latch(high)\n
          </span><span style="color:#323232;">    output_value = output_value &lt;&lt; 1\n
          </span>\n
          ```\n
          \n
          That is, if I interpereted correctly that you want the shift registers to output the following:\n
          \n
          ```\n
          \n
          <span style="color:#323232;">output_count, upper_shift_register, lower_shift_register\n
          </span><span style="color:#323232;">1, 00000000, 00000001\n
          </span><span style="color:#323232;">2, 00000000, 00000010\n
          </span><span style="color:#323232;">3, 00000000, 00000100\n
          </span><span style="color:#323232;">.\n
          </span><span style="color:#323232;">.\n
          </span><span style="color:#323232;">.\n
          </span><span style="color:#323232;">16, 10000000, 00000000\n
          </span>\n
          ```\n
          \n
          Note: Lemmy has a bug where it doesn’t format some symbols correctly, so the left angle bracket gets formatted as `&lt;`. The same issue exists for the right angle bracket, the ampersand, and I would presume others.
          """
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          date: 2023-09-28 08:34:54.0 +02:00
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          "323232"
        ]
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          "@quiescentcurrent@discuss.tchncs.de"
        ]
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          date: 2023-09-28 08:41:55.0 +02:00
        }
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          date: 2023-09-28 01:19:06.0 +02:00
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      }
      +root: App\Entity\EntryComment {#4059}
      +body: "I think you got and and or switched, first two lines should be fine for shifting the top 8 bits down."
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        "@Kalcifer@lemm.ee"
      ]
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        date: 2023-09-28 04:33:23.0 +02:00
      }
    }
    +root: App\Entity\EntryComment {#4059}
    +body: "I don’t follow what you mean."
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      "@Kalcifer@lemm.ee"
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  }
  +root: App\Entity\EntryComment {#4059}
  +body: "I think what he refers to is that you seem to do a bitwise or for the second line instead of the bitwise and."
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        **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
        ---
        """
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    +image: Proxies\__CG__\App\Entity\Image {#1978 …}
    +domain: Proxies\__CG__\App\Entity\Domain {#1889 …}
    +slug: "Shift-register-missing-bits"
    +title: "Shift register missing bits"
    +url: "https://discuss.tchncs.de/pictrs/image/7da4f08e-8d93-4cf1-99c9-22f2aea08d32.png"
    +body: """
      Hey friends,\n
      \n
      I have a two [daisy chained shift registers](https://i.imgur.com/tZBQ45e.png) ([74AHC595](https://www.diodes.com/assets/Datasheets/74AHC595.pdf)) which are controlled via an ESP32. I want to set one output to high at a time before switching to the next.\n
      \n
      The code seems to work, but the outputs O_9 and O_10 are not [staying high](https://i.imgur.com/v5OOE1K.png) ([zoom](https://i.imgur.com/VpMbdW3.png)) after setting them, whereas all the other ones are working fine. This is the used code snipped:\n
      \n
      ```\n
      \n
      <span style="color:#323232;">pinMode(SHIFT_OUT_DATA, OUTPUT);\n
      </span><span style="color:#323232;">pinMode(SHIFT_OUT_CLK, OUTPUT);\n
      </span><span style="color:#323232;">pinMode(SHIFT_OUT_N_EN, OUTPUT);\n
      </span><span style="color:#323232;">pinMode(SHIFT_OUT_LATCH, OUTPUT);\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">digitalWrite(SHIFT_OUT_N_EN, LOW);\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">uint16_t input_bin = 0b1000000000000000;\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">for(int i=0; i&lt;17; i++){\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">    byte upper_byte = input_bin >> 8;\n
      </span><span style="color:#323232;">    byte lower_byte = input_bin &amp; 0x00FF;\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">    digitalWrite(SHIFT_OUT_LATCH, LOW);\n
      </span><span style="color:#323232;">    shiftDataOut(SHIFT_OUT_DATA, SHIFT_OUT_CLK, MSBFIRST, lower_byte);\n
      </span><span style="color:#323232;">    shiftDataOut(SHIFT_OUT_DATA, SHIFT_OUT_CLK, MSBFIRST, upper_byte);\n
      </span><span style="color:#323232;">    usleep(10);\n
      </span><span style="color:#323232;">    digitalWrite(SHIFT_OUT_LATCH, HIGH);\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">    delay(10)\n
      </span><span style="color:#323232;">    input_bin = input_bin>>1;\n
      </span><span style="color:#323232;">} \n
      </span>\n
      ```\n
      \n
      Is there anything I’m doing wrong, or any idea on where the problem may lie? I’ve already tried looking for shorts and other error sources, but the design was manufactured on a PCB and no assembly issues are noticeable.
      """
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      date: 2023-09-27 21:22:49.0 +02:00
    }
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      date: 2023-09-27 21:04:21.0 +02:00
    }
  }
  +magazine: App\Entity\Magazine {#264}
  +image: null
  +parent: App\Entity\EntryComment {#4337
    +user: App\Entity\User {#4008 …}
    +entry: App\Entity\Entry {#2413}
    +magazine: App\Entity\Magazine {#264}
    +image: null
    +parent: App\Entity\EntryComment {#4303
      +user: App\Entity\User {#4203 …}
      +entry: App\Entity\Entry {#2413}
      +magazine: App\Entity\Magazine {#264}
      +image: null
      +parent: App\Entity\EntryComment {#4059
        +user: App\Entity\User {#4008 …}
        +entry: App\Entity\Entry {#2413}
        +magazine: App\Entity\Magazine {#264}
        +image: null
        +parent: null
        +root: null
        +body: """
          The first two lines of the for loop,\n
          \n
          ```\n
          \n
          <span style="color:#323232;">byte upper_byte = input_bin >> 8;\n
          </span><span style="color:#323232;">byte lower_byte = input_bin &amp; 0x00FF;\n
          </span>\n
          ```\n
          \n
          don’t really accomplish anything. The first line is bit shifting to the right 8, and then you just bitwise and it resulting in the same thing. For example, starting with `input_bin`:\n
          \n
          ```\n
          \n
          <span style="color:#323232;">1000 0000 0000 0000\n
          </span><span style="color:#323232;">>> 8\n
          </span><span style="color:#323232;">0000 0000 1000 0000\n
          </span><span style="color:#323232;">&amp; 0xFF\n
          </span><span style="color:#323232;">0000 0000 1000 0000\n
          </span>\n
          ```\n
          \n
          So, every time you go through a cycle of the for loop, you’ll just start with the same values in `upper_byte`, and `lower_byte`. To sequentially output each shifted value, you’ll instead want something like:\n
          \n
          ```\n
          \n
          <span style="color:#323232;">output_value = 0b1\n
          </span><span style="color:#323232;">for i = 1 to 16:\n
          </span><span style="color:#323232;">    latch(low)\n
          </span><span style="color:#323232;">    shift_out(output_value)\n
          </span><span style="color:#323232;">    latch(high)\n
          </span><span style="color:#323232;">    output_value = output_value &lt;&lt; 1\n
          </span>\n
          ```\n
          \n
          That is, if I interpereted correctly that you want the shift registers to output the following:\n
          \n
          ```\n
          \n
          <span style="color:#323232;">output_count, upper_shift_register, lower_shift_register\n
          </span><span style="color:#323232;">1, 00000000, 00000001\n
          </span><span style="color:#323232;">2, 00000000, 00000010\n
          </span><span style="color:#323232;">3, 00000000, 00000100\n
          </span><span style="color:#323232;">.\n
          </span><span style="color:#323232;">.\n
          </span><span style="color:#323232;">.\n
          </span><span style="color:#323232;">16, 10000000, 00000000\n
          </span>\n
          ```\n
          \n
          Note: Lemmy has a bug where it doesn’t format some symbols correctly, so the left angle bracket gets formatted as `&lt;`. The same issue exists for the right angle bracket, the ampersand, and I would presume others.
          """
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          date: 2023-09-28 08:41:55.0 +02:00
        }
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          date: 2023-09-28 01:19:06.0 +02:00
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      }
      +root: App\Entity\EntryComment {#4059}
      +body: "I think you got and and or switched, first two lines should be fine for shifting the top 8 bits down."
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        "@Kalcifer@lemm.ee"
      ]
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        date: 2023-09-28 04:33:23.0 +02:00
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    }
    +root: App\Entity\EntryComment {#4059}
    +body: "I don’t follow what you mean."
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      "@Kalcifer@lemm.ee"
      "@mvirts@lemmy.world"
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  +root: App\Entity\EntryComment {#4059}
  +body: "I think what he refers to is that you seem to do a bitwise or for the second line instead of the bitwise and."
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App\Entity\EntryComment {#4432
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        **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
        ---
        """
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    +image: Proxies\__CG__\App\Entity\Image {#1978 …}
    +domain: Proxies\__CG__\App\Entity\Domain {#1889 …}
    +slug: "Shift-register-missing-bits"
    +title: "Shift register missing bits"
    +url: "https://discuss.tchncs.de/pictrs/image/7da4f08e-8d93-4cf1-99c9-22f2aea08d32.png"
    +body: """
      Hey friends,\n
      \n
      I have a two [daisy chained shift registers](https://i.imgur.com/tZBQ45e.png) ([74AHC595](https://www.diodes.com/assets/Datasheets/74AHC595.pdf)) which are controlled via an ESP32. I want to set one output to high at a time before switching to the next.\n
      \n
      The code seems to work, but the outputs O_9 and O_10 are not [staying high](https://i.imgur.com/v5OOE1K.png) ([zoom](https://i.imgur.com/VpMbdW3.png)) after setting them, whereas all the other ones are working fine. This is the used code snipped:\n
      \n
      ```\n
      \n
      <span style="color:#323232;">pinMode(SHIFT_OUT_DATA, OUTPUT);\n
      </span><span style="color:#323232;">pinMode(SHIFT_OUT_CLK, OUTPUT);\n
      </span><span style="color:#323232;">pinMode(SHIFT_OUT_N_EN, OUTPUT);\n
      </span><span style="color:#323232;">pinMode(SHIFT_OUT_LATCH, OUTPUT);\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">digitalWrite(SHIFT_OUT_N_EN, LOW);\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">uint16_t input_bin = 0b1000000000000000;\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">for(int i=0; i&lt;17; i++){\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">    byte upper_byte = input_bin >> 8;\n
      </span><span style="color:#323232;">    byte lower_byte = input_bin &amp; 0x00FF;\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">    digitalWrite(SHIFT_OUT_LATCH, LOW);\n
      </span><span style="color:#323232;">    shiftDataOut(SHIFT_OUT_DATA, SHIFT_OUT_CLK, MSBFIRST, lower_byte);\n
      </span><span style="color:#323232;">    shiftDataOut(SHIFT_OUT_DATA, SHIFT_OUT_CLK, MSBFIRST, upper_byte);\n
      </span><span style="color:#323232;">    usleep(10);\n
      </span><span style="color:#323232;">    digitalWrite(SHIFT_OUT_LATCH, HIGH);\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">    delay(10)\n
      </span><span style="color:#323232;">    input_bin = input_bin>>1;\n
      </span><span style="color:#323232;">} \n
      </span>\n
      ```\n
      \n
      Is there anything I’m doing wrong, or any idea on where the problem may lie? I’ve already tried looking for shorts and other error sources, but the design was manufactured on a PCB and no assembly issues are noticeable.
      """
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      date: 2023-09-27 21:22:49.0 +02:00
    }
    +createdAt: DateTimeImmutable @1695841461 {#2388
      date: 2023-09-27 21:04:21.0 +02:00
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  }
  +magazine: App\Entity\Magazine {#264}
  +image: null
  +parent: App\Entity\EntryComment {#4394
    +user: App\Entity\User {#4070 …}
    +entry: App\Entity\Entry {#2413}
    +magazine: App\Entity\Magazine {#264}
    +image: null
    +parent: App\Entity\EntryComment {#4337
      +user: App\Entity\User {#4008 …}
      +entry: App\Entity\Entry {#2413}
      +magazine: App\Entity\Magazine {#264}
      +image: null
      +parent: App\Entity\EntryComment {#4303
        +user: App\Entity\User {#4203 …}
        +entry: App\Entity\Entry {#2413}
        +magazine: App\Entity\Magazine {#264}
        +image: null
        +parent: App\Entity\EntryComment {#4059
          +user: App\Entity\User {#4008 …}
          +entry: App\Entity\Entry {#2413}
          +magazine: App\Entity\Magazine {#264}
          +image: null
          +parent: null
          +root: null
          +body: """
            The first two lines of the for loop,\n
            \n
            ```\n
            \n
            <span style="color:#323232;">byte upper_byte = input_bin >> 8;\n
            </span><span style="color:#323232;">byte lower_byte = input_bin &amp; 0x00FF;\n
            </span>\n
            ```\n
            \n
            don’t really accomplish anything. The first line is bit shifting to the right 8, and then you just bitwise and it resulting in the same thing. For example, starting with `input_bin`:\n
            \n
            ```\n
            \n
            <span style="color:#323232;">1000 0000 0000 0000\n
            </span><span style="color:#323232;">>> 8\n
            </span><span style="color:#323232;">0000 0000 1000 0000\n
            </span><span style="color:#323232;">&amp; 0xFF\n
            </span><span style="color:#323232;">0000 0000 1000 0000\n
            </span>\n
            ```\n
            \n
            So, every time you go through a cycle of the for loop, you’ll just start with the same values in `upper_byte`, and `lower_byte`. To sequentially output each shifted value, you’ll instead want something like:\n
            \n
            ```\n
            \n
            <span style="color:#323232;">output_value = 0b1\n
            </span><span style="color:#323232;">for i = 1 to 16:\n
            </span><span style="color:#323232;">    latch(low)\n
            </span><span style="color:#323232;">    shift_out(output_value)\n
            </span><span style="color:#323232;">    latch(high)\n
            </span><span style="color:#323232;">    output_value = output_value &lt;&lt; 1\n
            </span>\n
            ```\n
            \n
            That is, if I interpereted correctly that you want the shift registers to output the following:\n
            \n
            ```\n
            \n
            <span style="color:#323232;">output_count, upper_shift_register, lower_shift_register\n
            </span><span style="color:#323232;">1, 00000000, 00000001\n
            </span><span style="color:#323232;">2, 00000000, 00000010\n
            </span><span style="color:#323232;">3, 00000000, 00000100\n
            </span><span style="color:#323232;">.\n
            </span><span style="color:#323232;">.\n
            </span><span style="color:#323232;">.\n
            </span><span style="color:#323232;">16, 10000000, 00000000\n
            </span>\n
            ```\n
            \n
            Note: Lemmy has a bug where it doesn’t format some symbols correctly, so the left angle bracket gets formatted as `&lt;`. The same issue exists for the right angle bracket, the ampersand, and I would presume others.
            """
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            "323232"
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            "@quiescentcurrent@discuss.tchncs.de"
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        +body: "I think you got and and or switched, first two lines should be fine for shifting the top 8 bits down."
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          date: 2023-09-28 04:33:23.0 +02:00
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    +body: "I think what he refers to is that you seem to do a bitwise or for the second line instead of the bitwise and."
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      date: 2023-09-28 07:48:03.0 +02:00
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  +body: "2nd line of what? Oh you are completely right. My bad. Idk why I wrote that. I’ll fix my comment."
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App\Entity\EntryComment {#4432
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        **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
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        \n
        ---
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    +domain: Proxies\__CG__\App\Entity\Domain {#1889 …}
    +slug: "Shift-register-missing-bits"
    +title: "Shift register missing bits"
    +url: "https://discuss.tchncs.de/pictrs/image/7da4f08e-8d93-4cf1-99c9-22f2aea08d32.png"
    +body: """
      Hey friends,\n
      \n
      I have a two [daisy chained shift registers](https://i.imgur.com/tZBQ45e.png) ([74AHC595](https://www.diodes.com/assets/Datasheets/74AHC595.pdf)) which are controlled via an ESP32. I want to set one output to high at a time before switching to the next.\n
      \n
      The code seems to work, but the outputs O_9 and O_10 are not [staying high](https://i.imgur.com/v5OOE1K.png) ([zoom](https://i.imgur.com/VpMbdW3.png)) after setting them, whereas all the other ones are working fine. This is the used code snipped:\n
      \n
      ```\n
      \n
      <span style="color:#323232;">pinMode(SHIFT_OUT_DATA, OUTPUT);\n
      </span><span style="color:#323232;">pinMode(SHIFT_OUT_CLK, OUTPUT);\n
      </span><span style="color:#323232;">pinMode(SHIFT_OUT_N_EN, OUTPUT);\n
      </span><span style="color:#323232;">pinMode(SHIFT_OUT_LATCH, OUTPUT);\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">digitalWrite(SHIFT_OUT_N_EN, LOW);\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">uint16_t input_bin = 0b1000000000000000;\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">for(int i=0; i&lt;17; i++){\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">    byte upper_byte = input_bin >> 8;\n
      </span><span style="color:#323232;">    byte lower_byte = input_bin &amp; 0x00FF;\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">    digitalWrite(SHIFT_OUT_LATCH, LOW);\n
      </span><span style="color:#323232;">    shiftDataOut(SHIFT_OUT_DATA, SHIFT_OUT_CLK, MSBFIRST, lower_byte);\n
      </span><span style="color:#323232;">    shiftDataOut(SHIFT_OUT_DATA, SHIFT_OUT_CLK, MSBFIRST, upper_byte);\n
      </span><span style="color:#323232;">    usleep(10);\n
      </span><span style="color:#323232;">    digitalWrite(SHIFT_OUT_LATCH, HIGH);\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">    delay(10)\n
      </span><span style="color:#323232;">    input_bin = input_bin>>1;\n
      </span><span style="color:#323232;">} \n
      </span>\n
      ```\n
      \n
      Is there anything I’m doing wrong, or any idea on where the problem may lie? I’ve already tried looking for shorts and other error sources, but the design was manufactured on a PCB and no assembly issues are noticeable.
      """
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      date: 2023-09-27 21:22:49.0 +02:00
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      date: 2023-09-27 21:04:21.0 +02:00
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  }
  +magazine: App\Entity\Magazine {#264}
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    +parent: App\Entity\EntryComment {#4337
      +user: App\Entity\User {#4008 …}
      +entry: App\Entity\Entry {#2413}
      +magazine: App\Entity\Magazine {#264}
      +image: null
      +parent: App\Entity\EntryComment {#4303
        +user: App\Entity\User {#4203 …}
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          +image: null
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          +body: """
            The first two lines of the for loop,\n
            \n
            ```\n
            \n
            <span style="color:#323232;">byte upper_byte = input_bin >> 8;\n
            </span><span style="color:#323232;">byte lower_byte = input_bin &amp; 0x00FF;\n
            </span>\n
            ```\n
            \n
            don’t really accomplish anything. The first line is bit shifting to the right 8, and then you just bitwise and it resulting in the same thing. For example, starting with `input_bin`:\n
            \n
            ```\n
            \n
            <span style="color:#323232;">1000 0000 0000 0000\n
            </span><span style="color:#323232;">>> 8\n
            </span><span style="color:#323232;">0000 0000 1000 0000\n
            </span><span style="color:#323232;">&amp; 0xFF\n
            </span><span style="color:#323232;">0000 0000 1000 0000\n
            </span>\n
            ```\n
            \n
            So, every time you go through a cycle of the for loop, you’ll just start with the same values in `upper_byte`, and `lower_byte`. To sequentially output each shifted value, you’ll instead want something like:\n
            \n
            ```\n
            \n
            <span style="color:#323232;">output_value = 0b1\n
            </span><span style="color:#323232;">for i = 1 to 16:\n
            </span><span style="color:#323232;">    latch(low)\n
            </span><span style="color:#323232;">    shift_out(output_value)\n
            </span><span style="color:#323232;">    latch(high)\n
            </span><span style="color:#323232;">    output_value = output_value &lt;&lt; 1\n
            </span>\n
            ```\n
            \n
            That is, if I interpereted correctly that you want the shift registers to output the following:\n
            \n
            ```\n
            \n
            <span style="color:#323232;">output_count, upper_shift_register, lower_shift_register\n
            </span><span style="color:#323232;">1, 00000000, 00000001\n
            </span><span style="color:#323232;">2, 00000000, 00000010\n
            </span><span style="color:#323232;">3, 00000000, 00000100\n
            </span><span style="color:#323232;">.\n
            </span><span style="color:#323232;">.\n
            </span><span style="color:#323232;">.\n
            </span><span style="color:#323232;">16, 10000000, 00000000\n
            </span>\n
            ```\n
            \n
            Note: Lemmy has a bug where it doesn’t format some symbols correctly, so the left angle bracket gets formatted as `&lt;`. The same issue exists for the right angle bracket, the ampersand, and I would presume others.
            """
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            "323232"
          ]
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            "@quiescentcurrent@discuss.tchncs.de"
          ]
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            date: 2023-09-28 08:41:55.0 +02:00
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        +root: App\Entity\EntryComment {#4059}
        +body: "I think you got and and or switched, first two lines should be fine for shifting the top 8 bits down."
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          date: 2023-09-28 04:33:23.0 +02:00
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      +root: App\Entity\EntryComment {#4059}
      +body: "I don’t follow what you mean."
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    +root: App\Entity\EntryComment {#4059}
    +body: "I think what he refers to is that you seem to do a bitwise or for the second line instead of the bitwise and."
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      date: 2023-09-28 07:48:03.0 +02:00
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  }
  +root: App\Entity\EntryComment {#4059}
  +body: "2nd line of what? Oh you are completely right. My bad. Idk why I wrote that. I’ll fix my comment."
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}
"App\Security\Voter\UserVoter"
App\Entity\EntryComment {#4432
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        **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
        ---
        """
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    +image: Proxies\__CG__\App\Entity\Image {#1978 …}
    +domain: Proxies\__CG__\App\Entity\Domain {#1889 …}
    +slug: "Shift-register-missing-bits"
    +title: "Shift register missing bits"
    +url: "https://discuss.tchncs.de/pictrs/image/7da4f08e-8d93-4cf1-99c9-22f2aea08d32.png"
    +body: """
      Hey friends,\n
      \n
      I have a two [daisy chained shift registers](https://i.imgur.com/tZBQ45e.png) ([74AHC595](https://www.diodes.com/assets/Datasheets/74AHC595.pdf)) which are controlled via an ESP32. I want to set one output to high at a time before switching to the next.\n
      \n
      The code seems to work, but the outputs O_9 and O_10 are not [staying high](https://i.imgur.com/v5OOE1K.png) ([zoom](https://i.imgur.com/VpMbdW3.png)) after setting them, whereas all the other ones are working fine. This is the used code snipped:\n
      \n
      ```\n
      \n
      <span style="color:#323232;">pinMode(SHIFT_OUT_DATA, OUTPUT);\n
      </span><span style="color:#323232;">pinMode(SHIFT_OUT_CLK, OUTPUT);\n
      </span><span style="color:#323232;">pinMode(SHIFT_OUT_N_EN, OUTPUT);\n
      </span><span style="color:#323232;">pinMode(SHIFT_OUT_LATCH, OUTPUT);\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">digitalWrite(SHIFT_OUT_N_EN, LOW);\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">uint16_t input_bin = 0b1000000000000000;\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">for(int i=0; i&lt;17; i++){\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">    byte upper_byte = input_bin >> 8;\n
      </span><span style="color:#323232;">    byte lower_byte = input_bin &amp; 0x00FF;\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">    digitalWrite(SHIFT_OUT_LATCH, LOW);\n
      </span><span style="color:#323232;">    shiftDataOut(SHIFT_OUT_DATA, SHIFT_OUT_CLK, MSBFIRST, lower_byte);\n
      </span><span style="color:#323232;">    shiftDataOut(SHIFT_OUT_DATA, SHIFT_OUT_CLK, MSBFIRST, upper_byte);\n
      </span><span style="color:#323232;">    usleep(10);\n
      </span><span style="color:#323232;">    digitalWrite(SHIFT_OUT_LATCH, HIGH);\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">    delay(10)\n
      </span><span style="color:#323232;">    input_bin = input_bin>>1;\n
      </span><span style="color:#323232;">} \n
      </span>\n
      ```\n
      \n
      Is there anything I’m doing wrong, or any idea on where the problem may lie? I’ve already tried looking for shorts and other error sources, but the design was manufactured on a PCB and no assembly issues are noticeable.
      """
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      date: 2023-09-27 21:22:49.0 +02:00
    }
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      date: 2023-09-27 21:04:21.0 +02:00
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  }
  +magazine: App\Entity\Magazine {#264}
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  +parent: App\Entity\EntryComment {#4394
    +user: App\Entity\User {#4070 …}
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    +image: null
    +parent: App\Entity\EntryComment {#4337
      +user: App\Entity\User {#4008 …}
      +entry: App\Entity\Entry {#2413}
      +magazine: App\Entity\Magazine {#264}
      +image: null
      +parent: App\Entity\EntryComment {#4303
        +user: App\Entity\User {#4203 …}
        +entry: App\Entity\Entry {#2413}
        +magazine: App\Entity\Magazine {#264}
        +image: null
        +parent: App\Entity\EntryComment {#4059
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          +entry: App\Entity\Entry {#2413}
          +magazine: App\Entity\Magazine {#264}
          +image: null
          +parent: null
          +root: null
          +body: """
            The first two lines of the for loop,\n
            \n
            ```\n
            \n
            <span style="color:#323232;">byte upper_byte = input_bin >> 8;\n
            </span><span style="color:#323232;">byte lower_byte = input_bin &amp; 0x00FF;\n
            </span>\n
            ```\n
            \n
            don’t really accomplish anything. The first line is bit shifting to the right 8, and then you just bitwise and it resulting in the same thing. For example, starting with `input_bin`:\n
            \n
            ```\n
            \n
            <span style="color:#323232;">1000 0000 0000 0000\n
            </span><span style="color:#323232;">>> 8\n
            </span><span style="color:#323232;">0000 0000 1000 0000\n
            </span><span style="color:#323232;">&amp; 0xFF\n
            </span><span style="color:#323232;">0000 0000 1000 0000\n
            </span>\n
            ```\n
            \n
            So, every time you go through a cycle of the for loop, you’ll just start with the same values in `upper_byte`, and `lower_byte`. To sequentially output each shifted value, you’ll instead want something like:\n
            \n
            ```\n
            \n
            <span style="color:#323232;">output_value = 0b1\n
            </span><span style="color:#323232;">for i = 1 to 16:\n
            </span><span style="color:#323232;">    latch(low)\n
            </span><span style="color:#323232;">    shift_out(output_value)\n
            </span><span style="color:#323232;">    latch(high)\n
            </span><span style="color:#323232;">    output_value = output_value &lt;&lt; 1\n
            </span>\n
            ```\n
            \n
            That is, if I interpereted correctly that you want the shift registers to output the following:\n
            \n
            ```\n
            \n
            <span style="color:#323232;">output_count, upper_shift_register, lower_shift_register\n
            </span><span style="color:#323232;">1, 00000000, 00000001\n
            </span><span style="color:#323232;">2, 00000000, 00000010\n
            </span><span style="color:#323232;">3, 00000000, 00000100\n
            </span><span style="color:#323232;">.\n
            </span><span style="color:#323232;">.\n
            </span><span style="color:#323232;">.\n
            </span><span style="color:#323232;">16, 10000000, 00000000\n
            </span>\n
            ```\n
            \n
            Note: Lemmy has a bug where it doesn’t format some symbols correctly, so the left angle bracket gets formatted as `&lt;`. The same issue exists for the right angle bracket, the ampersand, and I would presume others.
            """
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          +tags: [
            "323232"
          ]
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            "@quiescentcurrent@discuss.tchncs.de"
          ]
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            date: 2023-09-28 01:19:06.0 +02:00
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        }
        +root: App\Entity\EntryComment {#4059}
        +body: "I think you got and and or switched, first two lines should be fine for shifting the top 8 bits down."
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          "@Kalcifer@lemm.ee"
        ]
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        -id: 29956
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        +createdAt: DateTimeImmutable @1695868403 {#4302
          date: 2023-09-28 04:33:23.0 +02:00
        }
      }
      +root: App\Entity\EntryComment {#4059}
      +body: "I don’t follow what you mean."
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        "@mvirts@lemmy.world"
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    +root: App\Entity\EntryComment {#4059}
    +body: "I think what he refers to is that you seem to do a bitwise or for the second line instead of the bitwise and."
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  +body: "2nd line of what? Oh you are completely right. My bad. Idk why I wrote that. I’ll fix my comment."
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}
"App\Security\Voter\UserVoter"
null
"App\Security\Voter\UserVoter"
App\Entity\EntryComment {#4447
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        **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
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        3: No commercial stuff, buying, selling or valuations.\n
        \n
        4: Be safe.\n
        \n
        ---
        """
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    +domain: Proxies\__CG__\App\Entity\Domain {#1889 …}
    +slug: "Shift-register-missing-bits"
    +title: "Shift register missing bits"
    +url: "https://discuss.tchncs.de/pictrs/image/7da4f08e-8d93-4cf1-99c9-22f2aea08d32.png"
    +body: """
      Hey friends,\n
      \n
      I have a two [daisy chained shift registers](https://i.imgur.com/tZBQ45e.png) ([74AHC595](https://www.diodes.com/assets/Datasheets/74AHC595.pdf)) which are controlled via an ESP32. I want to set one output to high at a time before switching to the next.\n
      \n
      The code seems to work, but the outputs O_9 and O_10 are not [staying high](https://i.imgur.com/v5OOE1K.png) ([zoom](https://i.imgur.com/VpMbdW3.png)) after setting them, whereas all the other ones are working fine. This is the used code snipped:\n
      \n
      ```\n
      \n
      <span style="color:#323232;">pinMode(SHIFT_OUT_DATA, OUTPUT);\n
      </span><span style="color:#323232;">pinMode(SHIFT_OUT_CLK, OUTPUT);\n
      </span><span style="color:#323232;">pinMode(SHIFT_OUT_N_EN, OUTPUT);\n
      </span><span style="color:#323232;">pinMode(SHIFT_OUT_LATCH, OUTPUT);\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">digitalWrite(SHIFT_OUT_N_EN, LOW);\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">uint16_t input_bin = 0b1000000000000000;\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">for(int i=0; i&lt;17; i++){\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">    byte upper_byte = input_bin >> 8;\n
      </span><span style="color:#323232;">    byte lower_byte = input_bin &amp; 0x00FF;\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">    digitalWrite(SHIFT_OUT_LATCH, LOW);\n
      </span><span style="color:#323232;">    shiftDataOut(SHIFT_OUT_DATA, SHIFT_OUT_CLK, MSBFIRST, lower_byte);\n
      </span><span style="color:#323232;">    shiftDataOut(SHIFT_OUT_DATA, SHIFT_OUT_CLK, MSBFIRST, upper_byte);\n
      </span><span style="color:#323232;">    usleep(10);\n
      </span><span style="color:#323232;">    digitalWrite(SHIFT_OUT_LATCH, HIGH);\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">    delay(10)\n
      </span><span style="color:#323232;">    input_bin = input_bin>>1;\n
      </span><span style="color:#323232;">} \n
      </span>\n
      ```\n
      \n
      Is there anything I’m doing wrong, or any idea on where the problem may lie? I’ve already tried looking for shorts and other error sources, but the design was manufactured on a PCB and no assembly issues are noticeable.
      """
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      date: 2023-09-27 21:22:49.0 +02:00
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      date: 2023-09-27 21:04:21.0 +02:00
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  }
  +magazine: App\Entity\Magazine {#264}
  +image: null
  +parent: App\Entity\EntryComment {#4394
    +user: App\Entity\User {#4070 …}
    +entry: App\Entity\Entry {#2413}
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    +image: null
    +parent: App\Entity\EntryComment {#4337
      +user: App\Entity\User {#4008 …}
      +entry: App\Entity\Entry {#2413}
      +magazine: App\Entity\Magazine {#264}
      +image: null
      +parent: App\Entity\EntryComment {#4303
        +user: App\Entity\User {#4203 …}
        +entry: App\Entity\Entry {#2413}
        +magazine: App\Entity\Magazine {#264}
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        +parent: App\Entity\EntryComment {#4059
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          +magazine: App\Entity\Magazine {#264}
          +image: null
          +parent: null
          +root: null
          +body: """
            The first two lines of the for loop,\n
            \n
            ```\n
            \n
            <span style="color:#323232;">byte upper_byte = input_bin >> 8;\n
            </span><span style="color:#323232;">byte lower_byte = input_bin &amp; 0x00FF;\n
            </span>\n
            ```\n
            \n
            don’t really accomplish anything. The first line is bit shifting to the right 8, and then you just bitwise and it resulting in the same thing. For example, starting with `input_bin`:\n
            \n
            ```\n
            \n
            <span style="color:#323232;">1000 0000 0000 0000\n
            </span><span style="color:#323232;">>> 8\n
            </span><span style="color:#323232;">0000 0000 1000 0000\n
            </span><span style="color:#323232;">&amp; 0xFF\n
            </span><span style="color:#323232;">0000 0000 1000 0000\n
            </span>\n
            ```\n
            \n
            So, every time you go through a cycle of the for loop, you’ll just start with the same values in `upper_byte`, and `lower_byte`. To sequentially output each shifted value, you’ll instead want something like:\n
            \n
            ```\n
            \n
            <span style="color:#323232;">output_value = 0b1\n
            </span><span style="color:#323232;">for i = 1 to 16:\n
            </span><span style="color:#323232;">    latch(low)\n
            </span><span style="color:#323232;">    shift_out(output_value)\n
            </span><span style="color:#323232;">    latch(high)\n
            </span><span style="color:#323232;">    output_value = output_value &lt;&lt; 1\n
            </span>\n
            ```\n
            \n
            That is, if I interpereted correctly that you want the shift registers to output the following:\n
            \n
            ```\n
            \n
            <span style="color:#323232;">output_count, upper_shift_register, lower_shift_register\n
            </span><span style="color:#323232;">1, 00000000, 00000001\n
            </span><span style="color:#323232;">2, 00000000, 00000010\n
            </span><span style="color:#323232;">3, 00000000, 00000100\n
            </span><span style="color:#323232;">.\n
            </span><span style="color:#323232;">.\n
            </span><span style="color:#323232;">.\n
            </span><span style="color:#323232;">16, 10000000, 00000000\n
            </span>\n
            ```\n
            \n
            Note: Lemmy has a bug where it doesn’t format some symbols correctly, so the left angle bracket gets formatted as `&lt;`. The same issue exists for the right angle bracket, the ampersand, and I would presume others.
            """
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            "323232"
          ]
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            "@quiescentcurrent@discuss.tchncs.de"
          ]
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        }
        +root: App\Entity\EntryComment {#4059}
        +body: "I think you got and and or switched, first two lines should be fine for shifting the top 8 bits down."
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          date: 2023-09-28 04:33:23.0 +02:00
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      }
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    +root: App\Entity\EntryComment {#4059}
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    }
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  }
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"App\Security\Voter\UserVoter"
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        **For questions about component-level electronic circuits, tools and equipment.**\n
        \n
        Rules\n
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        \n
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        \n
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        \n
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    +slug: "Shift-register-missing-bits"
    +title: "Shift register missing bits"
    +url: "https://discuss.tchncs.de/pictrs/image/7da4f08e-8d93-4cf1-99c9-22f2aea08d32.png"
    +body: """
      Hey friends,\n
      \n
      I have a two [daisy chained shift registers](https://i.imgur.com/tZBQ45e.png) ([74AHC595](https://www.diodes.com/assets/Datasheets/74AHC595.pdf)) which are controlled via an ESP32. I want to set one output to high at a time before switching to the next.\n
      \n
      The code seems to work, but the outputs O_9 and O_10 are not [staying high](https://i.imgur.com/v5OOE1K.png) ([zoom](https://i.imgur.com/VpMbdW3.png)) after setting them, whereas all the other ones are working fine. This is the used code snipped:\n
      \n
      ```\n
      \n
      <span style="color:#323232;">pinMode(SHIFT_OUT_DATA, OUTPUT);\n
      </span><span style="color:#323232;">pinMode(SHIFT_OUT_CLK, OUTPUT);\n
      </span><span style="color:#323232;">pinMode(SHIFT_OUT_N_EN, OUTPUT);\n
      </span><span style="color:#323232;">pinMode(SHIFT_OUT_LATCH, OUTPUT);\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">digitalWrite(SHIFT_OUT_N_EN, LOW);\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">uint16_t input_bin = 0b1000000000000000;\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">for(int i=0; i&lt;17; i++){\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">    byte upper_byte = input_bin >> 8;\n
      </span><span style="color:#323232;">    byte lower_byte = input_bin &amp; 0x00FF;\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">    digitalWrite(SHIFT_OUT_LATCH, LOW);\n
      </span><span style="color:#323232;">    shiftDataOut(SHIFT_OUT_DATA, SHIFT_OUT_CLK, MSBFIRST, lower_byte);\n
      </span><span style="color:#323232;">    shiftDataOut(SHIFT_OUT_DATA, SHIFT_OUT_CLK, MSBFIRST, upper_byte);\n
      </span><span style="color:#323232;">    usleep(10);\n
      </span><span style="color:#323232;">    digitalWrite(SHIFT_OUT_LATCH, HIGH);\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">    delay(10)\n
      </span><span style="color:#323232;">    input_bin = input_bin>>1;\n
      </span><span style="color:#323232;">} \n
      </span>\n
      ```\n
      \n
      Is there anything I’m doing wrong, or any idea on where the problem may lie? I’ve already tried looking for shorts and other error sources, but the design was manufactured on a PCB and no assembly issues are noticeable.
      """
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      date: 2023-09-27 21:22:49.0 +02:00
    }
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      date: 2023-09-27 21:04:21.0 +02:00
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  }
  +magazine: App\Entity\Magazine {#264}
  +image: null
  +parent: App\Entity\EntryComment {#4394
    +user: App\Entity\User {#4070 …}
    +entry: App\Entity\Entry {#2413}
    +magazine: App\Entity\Magazine {#264}
    +image: null
    +parent: App\Entity\EntryComment {#4337
      +user: App\Entity\User {#4008 …}
      +entry: App\Entity\Entry {#2413}
      +magazine: App\Entity\Magazine {#264}
      +image: null
      +parent: App\Entity\EntryComment {#4303
        +user: App\Entity\User {#4203 …}
        +entry: App\Entity\Entry {#2413}
        +magazine: App\Entity\Magazine {#264}
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        +parent: App\Entity\EntryComment {#4059
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          +entry: App\Entity\Entry {#2413}
          +magazine: App\Entity\Magazine {#264}
          +image: null
          +parent: null
          +root: null
          +body: """
            The first two lines of the for loop,\n
            \n
            ```\n
            \n
            <span style="color:#323232;">byte upper_byte = input_bin >> 8;\n
            </span><span style="color:#323232;">byte lower_byte = input_bin &amp; 0x00FF;\n
            </span>\n
            ```\n
            \n
            don’t really accomplish anything. The first line is bit shifting to the right 8, and then you just bitwise and it resulting in the same thing. For example, starting with `input_bin`:\n
            \n
            ```\n
            \n
            <span style="color:#323232;">1000 0000 0000 0000\n
            </span><span style="color:#323232;">>> 8\n
            </span><span style="color:#323232;">0000 0000 1000 0000\n
            </span><span style="color:#323232;">&amp; 0xFF\n
            </span><span style="color:#323232;">0000 0000 1000 0000\n
            </span>\n
            ```\n
            \n
            So, every time you go through a cycle of the for loop, you’ll just start with the same values in `upper_byte`, and `lower_byte`. To sequentially output each shifted value, you’ll instead want something like:\n
            \n
            ```\n
            \n
            <span style="color:#323232;">output_value = 0b1\n
            </span><span style="color:#323232;">for i = 1 to 16:\n
            </span><span style="color:#323232;">    latch(low)\n
            </span><span style="color:#323232;">    shift_out(output_value)\n
            </span><span style="color:#323232;">    latch(high)\n
            </span><span style="color:#323232;">    output_value = output_value &lt;&lt; 1\n
            </span>\n
            ```\n
            \n
            That is, if I interpereted correctly that you want the shift registers to output the following:\n
            \n
            ```\n
            \n
            <span style="color:#323232;">output_count, upper_shift_register, lower_shift_register\n
            </span><span style="color:#323232;">1, 00000000, 00000001\n
            </span><span style="color:#323232;">2, 00000000, 00000010\n
            </span><span style="color:#323232;">3, 00000000, 00000100\n
            </span><span style="color:#323232;">.\n
            </span><span style="color:#323232;">.\n
            </span><span style="color:#323232;">.\n
            </span><span style="color:#323232;">16, 10000000, 00000000\n
            </span>\n
            ```\n
            \n
            Note: Lemmy has a bug where it doesn’t format some symbols correctly, so the left angle bracket gets formatted as `&lt;`. The same issue exists for the right angle bracket, the ampersand, and I would presume others.
            """
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            "323232"
          ]
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            "@quiescentcurrent@discuss.tchncs.de"
          ]
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        +body: "I think you got and and or switched, first two lines should be fine for shifting the top 8 bits down."
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"App\Security\Voter\UserVoter"
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        **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
        ---
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    +image: Proxies\__CG__\App\Entity\Image {#1978 …}
    +domain: Proxies\__CG__\App\Entity\Domain {#1889 …}
    +slug: "Shift-register-missing-bits"
    +title: "Shift register missing bits"
    +url: "https://discuss.tchncs.de/pictrs/image/7da4f08e-8d93-4cf1-99c9-22f2aea08d32.png"
    +body: """
      Hey friends,\n
      \n
      I have a two [daisy chained shift registers](https://i.imgur.com/tZBQ45e.png) ([74AHC595](https://www.diodes.com/assets/Datasheets/74AHC595.pdf)) which are controlled via an ESP32. I want to set one output to high at a time before switching to the next.\n
      \n
      The code seems to work, but the outputs O_9 and O_10 are not [staying high](https://i.imgur.com/v5OOE1K.png) ([zoom](https://i.imgur.com/VpMbdW3.png)) after setting them, whereas all the other ones are working fine. This is the used code snipped:\n
      \n
      ```\n
      \n
      <span style="color:#323232;">pinMode(SHIFT_OUT_DATA, OUTPUT);\n
      </span><span style="color:#323232;">pinMode(SHIFT_OUT_CLK, OUTPUT);\n
      </span><span style="color:#323232;">pinMode(SHIFT_OUT_N_EN, OUTPUT);\n
      </span><span style="color:#323232;">pinMode(SHIFT_OUT_LATCH, OUTPUT);\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">digitalWrite(SHIFT_OUT_N_EN, LOW);\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">uint16_t input_bin = 0b1000000000000000;\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">for(int i=0; i&lt;17; i++){\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">    byte upper_byte = input_bin >> 8;\n
      </span><span style="color:#323232;">    byte lower_byte = input_bin &amp; 0x00FF;\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">    digitalWrite(SHIFT_OUT_LATCH, LOW);\n
      </span><span style="color:#323232;">    shiftDataOut(SHIFT_OUT_DATA, SHIFT_OUT_CLK, MSBFIRST, lower_byte);\n
      </span><span style="color:#323232;">    shiftDataOut(SHIFT_OUT_DATA, SHIFT_OUT_CLK, MSBFIRST, upper_byte);\n
      </span><span style="color:#323232;">    usleep(10);\n
      </span><span style="color:#323232;">    digitalWrite(SHIFT_OUT_LATCH, HIGH);\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">    delay(10)\n
      </span><span style="color:#323232;">    input_bin = input_bin>>1;\n
      </span><span style="color:#323232;">} \n
      </span>\n
      ```\n
      \n
      Is there anything I’m doing wrong, or any idea on where the problem may lie? I’ve already tried looking for shorts and other error sources, but the design was manufactured on a PCB and no assembly issues are noticeable.
      """
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    -titleTs: "'bit':4 'miss':3 'regist':2 'shift':1"
    -bodyTs: "'/assets/datasheets/74ahc595.pdf))':17 '/tzbq45e.png)':13 '/v5ooe1k.png)':59 '/vpmbdw3.png))':63 '0':116 '0b1000000000000000':112 '0x00ff':131 '1':170 '10':52,158,165 '17':118 '74ahc595':14 '8':125 '9':49 'alreadi':189 'anyth':173 'assembl':208 'bin':111,124,130,167,169 'byte':120,122,126,128,146,156 'chain':8 'clk':89,143,153 'code':41,79 'control':20 'daisi':7 'data':84,140,150 'delay':164 'design':200 'digitalwrit':102,132,159 'en':95,106 'error':196 'esp32':23 'fine':74 'friend':2 'hey':1 'high':31,56,163 'i.imgur.com':12,58,62 'i.imgur.com/tzbq45e.png)':11 'i.imgur.com/v5ooe1k.png)':57 'i.imgur.com/vpmbdw3.png))':61 'idea':180 'input':110,123,129,166,168 'int':114 'issu':209 'latch':100,135,162 'lie':186 'look':191 'low':107,136 'lower':127,145 'm':175 'manufactur':202 'may':185 'msbfirst':144,154 'n':94,105 'next':39 'notic':211 'o':48,51 'one':28,71 'output':29,47,85,90,96,101 'pcb':205 'pinmod':81,86,91,97 'problem':184 'regist':10 'seem':42 'set':27,65 'shift':9,82,87,92,98,103,133,138,141,148,151,160 'shiftdataout':137,147 'short':193 'snip':80 'sourc':197 'stay':55 'switch':36 'time':34 'tri':190 'two':6 'uint16':108 'upper':121,155 'use':78 'usleep':157 've':188 'via':21 'want':25 'wherea':67 'work':44,73 'wrong':177 'www.diodes.com':16 'www.diodes.com/assets/datasheets/74ahc595.pdf))':15 'zoom':60"
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          +body: """
            The first two lines of the for loop,\n
            \n
            ```\n
            \n
            <span style="color:#323232;">byte upper_byte = input_bin >> 8;\n
            </span><span style="color:#323232;">byte lower_byte = input_bin &amp; 0x00FF;\n
            </span>\n
            ```\n
            \n
            don’t really accomplish anything. The first line is bit shifting to the right 8, and then you just bitwise and it resulting in the same thing. For example, starting with `input_bin`:\n
            \n
            ```\n
            \n
            <span style="color:#323232;">1000 0000 0000 0000\n
            </span><span style="color:#323232;">>> 8\n
            </span><span style="color:#323232;">0000 0000 1000 0000\n
            </span><span style="color:#323232;">&amp; 0xFF\n
            </span><span style="color:#323232;">0000 0000 1000 0000\n
            </span>\n
            ```\n
            \n
            So, every time you go through a cycle of the for loop, you’ll just start with the same values in `upper_byte`, and `lower_byte`. To sequentially output each shifted value, you’ll instead want something like:\n
            \n
            ```\n
            \n
            <span style="color:#323232;">output_value = 0b1\n
            </span><span style="color:#323232;">for i = 1 to 16:\n
            </span><span style="color:#323232;">    latch(low)\n
            </span><span style="color:#323232;">    shift_out(output_value)\n
            </span><span style="color:#323232;">    latch(high)\n
            </span><span style="color:#323232;">    output_value = output_value &lt;&lt; 1\n
            </span>\n
            ```\n
            \n
            That is, if I interpereted correctly that you want the shift registers to output the following:\n
            \n
            ```\n
            \n
            <span style="color:#323232;">output_count, upper_shift_register, lower_shift_register\n
            </span><span style="color:#323232;">1, 00000000, 00000001\n
            </span><span style="color:#323232;">2, 00000000, 00000010\n
            </span><span style="color:#323232;">3, 00000000, 00000100\n
            </span><span style="color:#323232;">.\n
            </span><span style="color:#323232;">.\n
            </span><span style="color:#323232;">.\n
            </span><span style="color:#323232;">16, 10000000, 00000000\n
            </span>\n
            ```\n
            \n
            Note: Lemmy has a bug where it doesn’t format some symbols correctly, so the left angle bracket gets formatted as `&lt;`. The same issue exists for the right angle bracket, the ampersand, and I would presume others.
            """
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        +body: "I think you got and and or switched, first two lines should be fine for shifting the top 8 bits down."
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    +body: "I think what he refers to is that you seem to do a bitwise or for the second line instead of the bitwise and."
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        **For questions about component-level electronic circuits, tools and equipment.**\n
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        Rules\n
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        \n
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    +slug: "Shift-register-missing-bits"
    +title: "Shift register missing bits"
    +url: "https://discuss.tchncs.de/pictrs/image/7da4f08e-8d93-4cf1-99c9-22f2aea08d32.png"
    +body: """
      Hey friends,\n
      \n
      I have a two [daisy chained shift registers](https://i.imgur.com/tZBQ45e.png) ([74AHC595](https://www.diodes.com/assets/Datasheets/74AHC595.pdf)) which are controlled via an ESP32. I want to set one output to high at a time before switching to the next.\n
      \n
      The code seems to work, but the outputs O_9 and O_10 are not [staying high](https://i.imgur.com/v5OOE1K.png) ([zoom](https://i.imgur.com/VpMbdW3.png)) after setting them, whereas all the other ones are working fine. This is the used code snipped:\n
      \n
      ```\n
      \n
      <span style="color:#323232;">pinMode(SHIFT_OUT_DATA, OUTPUT);\n
      </span><span style="color:#323232;">pinMode(SHIFT_OUT_CLK, OUTPUT);\n
      </span><span style="color:#323232;">pinMode(SHIFT_OUT_N_EN, OUTPUT);\n
      </span><span style="color:#323232;">pinMode(SHIFT_OUT_LATCH, OUTPUT);\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">digitalWrite(SHIFT_OUT_N_EN, LOW);\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">uint16_t input_bin = 0b1000000000000000;\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">for(int i=0; i&lt;17; i++){\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">    byte upper_byte = input_bin >> 8;\n
      </span><span style="color:#323232;">    byte lower_byte = input_bin &amp; 0x00FF;\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">    digitalWrite(SHIFT_OUT_LATCH, LOW);\n
      </span><span style="color:#323232;">    shiftDataOut(SHIFT_OUT_DATA, SHIFT_OUT_CLK, MSBFIRST, lower_byte);\n
      </span><span style="color:#323232;">    shiftDataOut(SHIFT_OUT_DATA, SHIFT_OUT_CLK, MSBFIRST, upper_byte);\n
      </span><span style="color:#323232;">    usleep(10);\n
      </span><span style="color:#323232;">    digitalWrite(SHIFT_OUT_LATCH, HIGH);\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">    delay(10)\n
      </span><span style="color:#323232;">    input_bin = input_bin>>1;\n
      </span><span style="color:#323232;">} \n
      </span>\n
      ```\n
      \n
      Is there anything I’m doing wrong, or any idea on where the problem may lie? I’ve already tried looking for shorts and other error sources, but the design was manufactured on a PCB and no assembly issues are noticeable.
      """
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        **For questions about component-level electronic circuits, tools and equipment.**\n
        \n
        Rules\n
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        1: Be nice.\n
        \n
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    +slug: "Shift-register-missing-bits"
    +title: "Shift register missing bits"
    +url: "https://discuss.tchncs.de/pictrs/image/7da4f08e-8d93-4cf1-99c9-22f2aea08d32.png"
    +body: """
      Hey friends,\n
      \n
      I have a two [daisy chained shift registers](https://i.imgur.com/tZBQ45e.png) ([74AHC595](https://www.diodes.com/assets/Datasheets/74AHC595.pdf)) which are controlled via an ESP32. I want to set one output to high at a time before switching to the next.\n
      \n
      The code seems to work, but the outputs O_9 and O_10 are not [staying high](https://i.imgur.com/v5OOE1K.png) ([zoom](https://i.imgur.com/VpMbdW3.png)) after setting them, whereas all the other ones are working fine. This is the used code snipped:\n
      \n
      ```\n
      \n
      <span style="color:#323232;">pinMode(SHIFT_OUT_DATA, OUTPUT);\n
      </span><span style="color:#323232;">pinMode(SHIFT_OUT_CLK, OUTPUT);\n
      </span><span style="color:#323232;">pinMode(SHIFT_OUT_N_EN, OUTPUT);\n
      </span><span style="color:#323232;">pinMode(SHIFT_OUT_LATCH, OUTPUT);\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">digitalWrite(SHIFT_OUT_N_EN, LOW);\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">uint16_t input_bin = 0b1000000000000000;\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">for(int i=0; i&lt;17; i++){\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">    byte upper_byte = input_bin >> 8;\n
      </span><span style="color:#323232;">    byte lower_byte = input_bin &amp; 0x00FF;\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">    digitalWrite(SHIFT_OUT_LATCH, LOW);\n
      </span><span style="color:#323232;">    shiftDataOut(SHIFT_OUT_DATA, SHIFT_OUT_CLK, MSBFIRST, lower_byte);\n
      </span><span style="color:#323232;">    shiftDataOut(SHIFT_OUT_DATA, SHIFT_OUT_CLK, MSBFIRST, upper_byte);\n
      </span><span style="color:#323232;">    usleep(10);\n
      </span><span style="color:#323232;">    digitalWrite(SHIFT_OUT_LATCH, HIGH);\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">    delay(10)\n
      </span><span style="color:#323232;">    input_bin = input_bin>>1;\n
      </span><span style="color:#323232;">} \n
      </span>\n
      ```\n
      \n
      Is there anything I’m doing wrong, or any idea on where the problem may lie? I’ve already tried looking for shorts and other error sources, but the design was manufactured on a PCB and no assembly issues are noticeable.
      """
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        \n
        Rules\n
        -----\n
        \n
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        \n
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        \n
        3: No commercial stuff, buying, selling or valuations.\n
        \n
        4: Be safe.\n
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    +slug: "Shift-register-missing-bits"
    +title: "Shift register missing bits"
    +url: "https://discuss.tchncs.de/pictrs/image/7da4f08e-8d93-4cf1-99c9-22f2aea08d32.png"
    +body: """
      Hey friends,\n
      \n
      I have a two [daisy chained shift registers](https://i.imgur.com/tZBQ45e.png) ([74AHC595](https://www.diodes.com/assets/Datasheets/74AHC595.pdf)) which are controlled via an ESP32. I want to set one output to high at a time before switching to the next.\n
      \n
      The code seems to work, but the outputs O_9 and O_10 are not [staying high](https://i.imgur.com/v5OOE1K.png) ([zoom](https://i.imgur.com/VpMbdW3.png)) after setting them, whereas all the other ones are working fine. This is the used code snipped:\n
      \n
      ```\n
      \n
      <span style="color:#323232;">pinMode(SHIFT_OUT_DATA, OUTPUT);\n
      </span><span style="color:#323232;">pinMode(SHIFT_OUT_CLK, OUTPUT);\n
      </span><span style="color:#323232;">pinMode(SHIFT_OUT_N_EN, OUTPUT);\n
      </span><span style="color:#323232;">pinMode(SHIFT_OUT_LATCH, OUTPUT);\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">digitalWrite(SHIFT_OUT_N_EN, LOW);\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">uint16_t input_bin = 0b1000000000000000;\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">for(int i=0; i&lt;17; i++){\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">    byte upper_byte = input_bin >> 8;\n
      </span><span style="color:#323232;">    byte lower_byte = input_bin &amp; 0x00FF;\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">    digitalWrite(SHIFT_OUT_LATCH, LOW);\n
      </span><span style="color:#323232;">    shiftDataOut(SHIFT_OUT_DATA, SHIFT_OUT_CLK, MSBFIRST, lower_byte);\n
      </span><span style="color:#323232;">    shiftDataOut(SHIFT_OUT_DATA, SHIFT_OUT_CLK, MSBFIRST, upper_byte);\n
      </span><span style="color:#323232;">    usleep(10);\n
      </span><span style="color:#323232;">    digitalWrite(SHIFT_OUT_LATCH, HIGH);\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">    delay(10)\n
      </span><span style="color:#323232;">    input_bin = input_bin>>1;\n
      </span><span style="color:#323232;">} \n
      </span>\n
      ```\n
      \n
      Is there anything I’m doing wrong, or any idea on where the problem may lie? I’ve already tried looking for shorts and other error sources, but the design was manufactured on a PCB and no assembly issues are noticeable.
      """
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"App\Security\Voter\UserVoter"
null
"App\Security\Voter\UserVoter"
App\Entity\EntryComment {#4270
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        **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
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    +domain: Proxies\__CG__\App\Entity\Domain {#1889 …}
    +slug: "Shift-register-missing-bits"
    +title: "Shift register missing bits"
    +url: "https://discuss.tchncs.de/pictrs/image/7da4f08e-8d93-4cf1-99c9-22f2aea08d32.png"
    +body: """
      Hey friends,\n
      \n
      I have a two [daisy chained shift registers](https://i.imgur.com/tZBQ45e.png) ([74AHC595](https://www.diodes.com/assets/Datasheets/74AHC595.pdf)) which are controlled via an ESP32. I want to set one output to high at a time before switching to the next.\n
      \n
      The code seems to work, but the outputs O_9 and O_10 are not [staying high](https://i.imgur.com/v5OOE1K.png) ([zoom](https://i.imgur.com/VpMbdW3.png)) after setting them, whereas all the other ones are working fine. This is the used code snipped:\n
      \n
      ```\n
      \n
      <span style="color:#323232;">pinMode(SHIFT_OUT_DATA, OUTPUT);\n
      </span><span style="color:#323232;">pinMode(SHIFT_OUT_CLK, OUTPUT);\n
      </span><span style="color:#323232;">pinMode(SHIFT_OUT_N_EN, OUTPUT);\n
      </span><span style="color:#323232;">pinMode(SHIFT_OUT_LATCH, OUTPUT);\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">digitalWrite(SHIFT_OUT_N_EN, LOW);\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">uint16_t input_bin = 0b1000000000000000;\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">for(int i=0; i&lt;17; i++){\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">    byte upper_byte = input_bin >> 8;\n
      </span><span style="color:#323232;">    byte lower_byte = input_bin &amp; 0x00FF;\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">    digitalWrite(SHIFT_OUT_LATCH, LOW);\n
      </span><span style="color:#323232;">    shiftDataOut(SHIFT_OUT_DATA, SHIFT_OUT_CLK, MSBFIRST, lower_byte);\n
      </span><span style="color:#323232;">    shiftDataOut(SHIFT_OUT_DATA, SHIFT_OUT_CLK, MSBFIRST, upper_byte);\n
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      </span><span style="color:#323232;">    digitalWrite(SHIFT_OUT_LATCH, HIGH);\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">    delay(10)\n
      </span><span style="color:#323232;">    input_bin = input_bin>>1;\n
      </span><span style="color:#323232;">} \n
      </span>\n
      ```\n
      \n
      Is there anything I’m doing wrong, or any idea on where the problem may lie? I’ve already tried looking for shorts and other error sources, but the design was manufactured on a PCB and no assembly issues are noticeable.
      """
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"App\Security\Voter\UserVoter"
App\Entity\EntryComment {#4270
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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
        ---
        """
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    +domain: Proxies\__CG__\App\Entity\Domain {#1889 …}
    +slug: "Shift-register-missing-bits"
    +title: "Shift register missing bits"
    +url: "https://discuss.tchncs.de/pictrs/image/7da4f08e-8d93-4cf1-99c9-22f2aea08d32.png"
    +body: """
      Hey friends,\n
      \n
      I have a two [daisy chained shift registers](https://i.imgur.com/tZBQ45e.png) ([74AHC595](https://www.diodes.com/assets/Datasheets/74AHC595.pdf)) which are controlled via an ESP32. I want to set one output to high at a time before switching to the next.\n
      \n
      The code seems to work, but the outputs O_9 and O_10 are not [staying high](https://i.imgur.com/v5OOE1K.png) ([zoom](https://i.imgur.com/VpMbdW3.png)) after setting them, whereas all the other ones are working fine. This is the used code snipped:\n
      \n
      ```\n
      \n
      <span style="color:#323232;">pinMode(SHIFT_OUT_DATA, OUTPUT);\n
      </span><span style="color:#323232;">pinMode(SHIFT_OUT_CLK, OUTPUT);\n
      </span><span style="color:#323232;">pinMode(SHIFT_OUT_N_EN, OUTPUT);\n
      </span><span style="color:#323232;">pinMode(SHIFT_OUT_LATCH, OUTPUT);\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">digitalWrite(SHIFT_OUT_N_EN, LOW);\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">uint16_t input_bin = 0b1000000000000000;\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">for(int i=0; i&lt;17; i++){\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">    byte upper_byte = input_bin >> 8;\n
      </span><span style="color:#323232;">    byte lower_byte = input_bin &amp; 0x00FF;\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">    digitalWrite(SHIFT_OUT_LATCH, LOW);\n
      </span><span style="color:#323232;">    shiftDataOut(SHIFT_OUT_DATA, SHIFT_OUT_CLK, MSBFIRST, lower_byte);\n
      </span><span style="color:#323232;">    shiftDataOut(SHIFT_OUT_DATA, SHIFT_OUT_CLK, MSBFIRST, upper_byte);\n
      </span><span style="color:#323232;">    usleep(10);\n
      </span><span style="color:#323232;">    digitalWrite(SHIFT_OUT_LATCH, HIGH);\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">    delay(10)\n
      </span><span style="color:#323232;">    input_bin = input_bin>>1;\n
      </span><span style="color:#323232;">} \n
      </span>\n
      ```\n
      \n
      Is there anything I’m doing wrong, or any idea on where the problem may lie? I’ve already tried looking for shorts and other error sources, but the design was manufactured on a PCB and no assembly issues are noticeable.
      """
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  +body: "You’re probably right, but that should only change the order of the outputs right?"
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"App\Security\Voter\UserVoter"
App\Entity\EntryComment {#4270
  +user: Proxies\__CG__\App\Entity\User {#1973 …}
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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
        ---
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    +domain: Proxies\__CG__\App\Entity\Domain {#1889 …}
    +slug: "Shift-register-missing-bits"
    +title: "Shift register missing bits"
    +url: "https://discuss.tchncs.de/pictrs/image/7da4f08e-8d93-4cf1-99c9-22f2aea08d32.png"
    +body: """
      Hey friends,\n
      \n
      I have a two [daisy chained shift registers](https://i.imgur.com/tZBQ45e.png) ([74AHC595](https://www.diodes.com/assets/Datasheets/74AHC595.pdf)) which are controlled via an ESP32. I want to set one output to high at a time before switching to the next.\n
      \n
      The code seems to work, but the outputs O_9 and O_10 are not [staying high](https://i.imgur.com/v5OOE1K.png) ([zoom](https://i.imgur.com/VpMbdW3.png)) after setting them, whereas all the other ones are working fine. This is the used code snipped:\n
      \n
      ```\n
      \n
      <span style="color:#323232;">pinMode(SHIFT_OUT_DATA, OUTPUT);\n
      </span><span style="color:#323232;">pinMode(SHIFT_OUT_CLK, OUTPUT);\n
      </span><span style="color:#323232;">pinMode(SHIFT_OUT_N_EN, OUTPUT);\n
      </span><span style="color:#323232;">pinMode(SHIFT_OUT_LATCH, OUTPUT);\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">digitalWrite(SHIFT_OUT_N_EN, LOW);\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">uint16_t input_bin = 0b1000000000000000;\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">for(int i=0; i&lt;17; i++){\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">    byte upper_byte = input_bin >> 8;\n
      </span><span style="color:#323232;">    byte lower_byte = input_bin &amp; 0x00FF;\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">    digitalWrite(SHIFT_OUT_LATCH, LOW);\n
      </span><span style="color:#323232;">    shiftDataOut(SHIFT_OUT_DATA, SHIFT_OUT_CLK, MSBFIRST, lower_byte);\n
      </span><span style="color:#323232;">    shiftDataOut(SHIFT_OUT_DATA, SHIFT_OUT_CLK, MSBFIRST, upper_byte);\n
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      </span><span style="color:#323232;">    digitalWrite(SHIFT_OUT_LATCH, HIGH);\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">    delay(10)\n
      </span><span style="color:#323232;">    input_bin = input_bin>>1;\n
      </span><span style="color:#323232;">} \n
      </span>\n
      ```\n
      \n
      Is there anything I’m doing wrong, or any idea on where the problem may lie? I’ve already tried looking for shorts and other error sources, but the design was manufactured on a PCB and no assembly issues are noticeable.
      """
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      date: 2023-09-27 21:22:49.0 +02:00
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}
"App\Security\Voter\UserVoter"
null
"App\Security\Voter\UserVoter"
App\Entity\EntryComment {#4083
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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
        ---
        """
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    +image: Proxies\__CG__\App\Entity\Image {#1978 …}
    +domain: Proxies\__CG__\App\Entity\Domain {#1889 …}
    +slug: "Shift-register-missing-bits"
    +title: "Shift register missing bits"
    +url: "https://discuss.tchncs.de/pictrs/image/7da4f08e-8d93-4cf1-99c9-22f2aea08d32.png"
    +body: """
      Hey friends,\n
      \n
      I have a two [daisy chained shift registers](https://i.imgur.com/tZBQ45e.png) ([74AHC595](https://www.diodes.com/assets/Datasheets/74AHC595.pdf)) which are controlled via an ESP32. I want to set one output to high at a time before switching to the next.\n
      \n
      The code seems to work, but the outputs O_9 and O_10 are not [staying high](https://i.imgur.com/v5OOE1K.png) ([zoom](https://i.imgur.com/VpMbdW3.png)) after setting them, whereas all the other ones are working fine. This is the used code snipped:\n
      \n
      ```\n
      \n
      <span style="color:#323232;">pinMode(SHIFT_OUT_DATA, OUTPUT);\n
      </span><span style="color:#323232;">pinMode(SHIFT_OUT_CLK, OUTPUT);\n
      </span><span style="color:#323232;">pinMode(SHIFT_OUT_N_EN, OUTPUT);\n
      </span><span style="color:#323232;">pinMode(SHIFT_OUT_LATCH, OUTPUT);\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">digitalWrite(SHIFT_OUT_N_EN, LOW);\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">uint16_t input_bin = 0b1000000000000000;\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">for(int i=0; i&lt;17; i++){\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">    byte upper_byte = input_bin >> 8;\n
      </span><span style="color:#323232;">    byte lower_byte = input_bin &amp; 0x00FF;\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">    digitalWrite(SHIFT_OUT_LATCH, LOW);\n
      </span><span style="color:#323232;">    shiftDataOut(SHIFT_OUT_DATA, SHIFT_OUT_CLK, MSBFIRST, lower_byte);\n
      </span><span style="color:#323232;">    shiftDataOut(SHIFT_OUT_DATA, SHIFT_OUT_CLK, MSBFIRST, upper_byte);\n
      </span><span style="color:#323232;">    usleep(10);\n
      </span><span style="color:#323232;">    digitalWrite(SHIFT_OUT_LATCH, HIGH);\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">    delay(10)\n
      </span><span style="color:#323232;">    input_bin = input_bin>>1;\n
      </span><span style="color:#323232;">} \n
      </span>\n
      ```\n
      \n
      Is there anything I’m doing wrong, or any idea on where the problem may lie? I’ve already tried looking for shorts and other error sources, but the design was manufactured on a PCB and no assembly issues are noticeable.
      """
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  +body: "What does shiftDataOut do? You loop over it but you give the whole byte to it anyway in each loop."
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        **For questions about component-level electronic circuits, tools and equipment.**\n
        \n
        Rules\n
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        1: Be nice.\n
        \n
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        \n
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    +slug: "Shift-register-missing-bits"
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    +url: "https://discuss.tchncs.de/pictrs/image/7da4f08e-8d93-4cf1-99c9-22f2aea08d32.png"
    +body: """
      Hey friends,\n
      \n
      I have a two [daisy chained shift registers](https://i.imgur.com/tZBQ45e.png) ([74AHC595](https://www.diodes.com/assets/Datasheets/74AHC595.pdf)) which are controlled via an ESP32. I want to set one output to high at a time before switching to the next.\n
      \n
      The code seems to work, but the outputs O_9 and O_10 are not [staying high](https://i.imgur.com/v5OOE1K.png) ([zoom](https://i.imgur.com/VpMbdW3.png)) after setting them, whereas all the other ones are working fine. This is the used code snipped:\n
      \n
      ```\n
      \n
      <span style="color:#323232;">pinMode(SHIFT_OUT_DATA, OUTPUT);\n
      </span><span style="color:#323232;">pinMode(SHIFT_OUT_CLK, OUTPUT);\n
      </span><span style="color:#323232;">pinMode(SHIFT_OUT_N_EN, OUTPUT);\n
      </span><span style="color:#323232;">pinMode(SHIFT_OUT_LATCH, OUTPUT);\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">digitalWrite(SHIFT_OUT_N_EN, LOW);\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">uint16_t input_bin = 0b1000000000000000;\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">for(int i=0; i&lt;17; i++){\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">    byte upper_byte = input_bin >> 8;\n
      </span><span style="color:#323232;">    byte lower_byte = input_bin &amp; 0x00FF;\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">    digitalWrite(SHIFT_OUT_LATCH, LOW);\n
      </span><span style="color:#323232;">    shiftDataOut(SHIFT_OUT_DATA, SHIFT_OUT_CLK, MSBFIRST, lower_byte);\n
      </span><span style="color:#323232;">    shiftDataOut(SHIFT_OUT_DATA, SHIFT_OUT_CLK, MSBFIRST, upper_byte);\n
      </span><span style="color:#323232;">    usleep(10);\n
      </span><span style="color:#323232;">    digitalWrite(SHIFT_OUT_LATCH, HIGH);\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">    delay(10)\n
      </span><span style="color:#323232;">    input_bin = input_bin>>1;\n
      </span><span style="color:#323232;">} \n
      </span>\n
      ```\n
      \n
      Is there anything I’m doing wrong, or any idea on where the problem may lie? I’ve already tried looking for shorts and other error sources, but the design was manufactured on a PCB and no assembly issues are noticeable.
      """
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        **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
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        ---
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    +domain: Proxies\__CG__\App\Entity\Domain {#1889 …}
    +slug: "Shift-register-missing-bits"
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    +url: "https://discuss.tchncs.de/pictrs/image/7da4f08e-8d93-4cf1-99c9-22f2aea08d32.png"
    +body: """
      Hey friends,\n
      \n
      I have a two [daisy chained shift registers](https://i.imgur.com/tZBQ45e.png) ([74AHC595](https://www.diodes.com/assets/Datasheets/74AHC595.pdf)) which are controlled via an ESP32. I want to set one output to high at a time before switching to the next.\n
      \n
      The code seems to work, but the outputs O_9 and O_10 are not [staying high](https://i.imgur.com/v5OOE1K.png) ([zoom](https://i.imgur.com/VpMbdW3.png)) after setting them, whereas all the other ones are working fine. This is the used code snipped:\n
      \n
      ```\n
      \n
      <span style="color:#323232;">pinMode(SHIFT_OUT_DATA, OUTPUT);\n
      </span><span style="color:#323232;">pinMode(SHIFT_OUT_CLK, OUTPUT);\n
      </span><span style="color:#323232;">pinMode(SHIFT_OUT_N_EN, OUTPUT);\n
      </span><span style="color:#323232;">pinMode(SHIFT_OUT_LATCH, OUTPUT);\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">digitalWrite(SHIFT_OUT_N_EN, LOW);\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">uint16_t input_bin = 0b1000000000000000;\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">for(int i=0; i&lt;17; i++){\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">    byte upper_byte = input_bin >> 8;\n
      </span><span style="color:#323232;">    byte lower_byte = input_bin &amp; 0x00FF;\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">    digitalWrite(SHIFT_OUT_LATCH, LOW);\n
      </span><span style="color:#323232;">    shiftDataOut(SHIFT_OUT_DATA, SHIFT_OUT_CLK, MSBFIRST, lower_byte);\n
      </span><span style="color:#323232;">    shiftDataOut(SHIFT_OUT_DATA, SHIFT_OUT_CLK, MSBFIRST, upper_byte);\n
      </span><span style="color:#323232;">    usleep(10);\n
      </span><span style="color:#323232;">    digitalWrite(SHIFT_OUT_LATCH, HIGH);\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">    delay(10)\n
      </span><span style="color:#323232;">    input_bin = input_bin>>1;\n
      </span><span style="color:#323232;">} \n
      </span>\n
      ```\n
      \n
      Is there anything I’m doing wrong, or any idea on where the problem may lie? I’ve already tried looking for shorts and other error sources, but the design was manufactured on a PCB and no assembly issues are noticeable.
      """
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        \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
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        ---
        """
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    +slug: "Shift-register-missing-bits"
    +title: "Shift register missing bits"
    +url: "https://discuss.tchncs.de/pictrs/image/7da4f08e-8d93-4cf1-99c9-22f2aea08d32.png"
    +body: """
      Hey friends,\n
      \n
      I have a two [daisy chained shift registers](https://i.imgur.com/tZBQ45e.png) ([74AHC595](https://www.diodes.com/assets/Datasheets/74AHC595.pdf)) which are controlled via an ESP32. I want to set one output to high at a time before switching to the next.\n
      \n
      The code seems to work, but the outputs O_9 and O_10 are not [staying high](https://i.imgur.com/v5OOE1K.png) ([zoom](https://i.imgur.com/VpMbdW3.png)) after setting them, whereas all the other ones are working fine. This is the used code snipped:\n
      \n
      ```\n
      \n
      <span style="color:#323232;">pinMode(SHIFT_OUT_DATA, OUTPUT);\n
      </span><span style="color:#323232;">pinMode(SHIFT_OUT_CLK, OUTPUT);\n
      </span><span style="color:#323232;">pinMode(SHIFT_OUT_N_EN, OUTPUT);\n
      </span><span style="color:#323232;">pinMode(SHIFT_OUT_LATCH, OUTPUT);\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">digitalWrite(SHIFT_OUT_N_EN, LOW);\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">uint16_t input_bin = 0b1000000000000000;\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">for(int i=0; i&lt;17; i++){\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">    byte upper_byte = input_bin >> 8;\n
      </span><span style="color:#323232;">    byte lower_byte = input_bin &amp; 0x00FF;\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">    digitalWrite(SHIFT_OUT_LATCH, LOW);\n
      </span><span style="color:#323232;">    shiftDataOut(SHIFT_OUT_DATA, SHIFT_OUT_CLK, MSBFIRST, lower_byte);\n
      </span><span style="color:#323232;">    shiftDataOut(SHIFT_OUT_DATA, SHIFT_OUT_CLK, MSBFIRST, upper_byte);\n
      </span><span style="color:#323232;">    usleep(10);\n
      </span><span style="color:#323232;">    digitalWrite(SHIFT_OUT_LATCH, HIGH);\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">    delay(10)\n
      </span><span style="color:#323232;">    input_bin = input_bin>>1;\n
      </span><span style="color:#323232;">} \n
      </span>\n
      ```\n
      \n
      Is there anything I’m doing wrong, or any idea on where the problem may lie? I’ve already tried looking for shorts and other error sources, but the design was manufactured on a PCB and no assembly issues are noticeable.
      """
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        **For questions about component-level electronic circuits, tools and equipment.**\n
        \n
        Rules\n
        -----\n
        \n
        1: Be nice.\n
        \n
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        \n
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    +domain: Proxies\__CG__\App\Entity\Domain {#1889 …}
    +slug: "Shift-register-missing-bits"
    +title: "Shift register missing bits"
    +url: "https://discuss.tchncs.de/pictrs/image/7da4f08e-8d93-4cf1-99c9-22f2aea08d32.png"
    +body: """
      Hey friends,\n
      \n
      I have a two [daisy chained shift registers](https://i.imgur.com/tZBQ45e.png) ([74AHC595](https://www.diodes.com/assets/Datasheets/74AHC595.pdf)) which are controlled via an ESP32. I want to set one output to high at a time before switching to the next.\n
      \n
      The code seems to work, but the outputs O_9 and O_10 are not [staying high](https://i.imgur.com/v5OOE1K.png) ([zoom](https://i.imgur.com/VpMbdW3.png)) after setting them, whereas all the other ones are working fine. This is the used code snipped:\n
      \n
      ```\n
      \n
      <span style="color:#323232;">pinMode(SHIFT_OUT_DATA, OUTPUT);\n
      </span><span style="color:#323232;">pinMode(SHIFT_OUT_CLK, OUTPUT);\n
      </span><span style="color:#323232;">pinMode(SHIFT_OUT_N_EN, OUTPUT);\n
      </span><span style="color:#323232;">pinMode(SHIFT_OUT_LATCH, OUTPUT);\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">digitalWrite(SHIFT_OUT_N_EN, LOW);\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">uint16_t input_bin = 0b1000000000000000;\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">for(int i=0; i&lt;17; i++){\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">    byte upper_byte = input_bin >> 8;\n
      </span><span style="color:#323232;">    byte lower_byte = input_bin &amp; 0x00FF;\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">    digitalWrite(SHIFT_OUT_LATCH, LOW);\n
      </span><span style="color:#323232;">    shiftDataOut(SHIFT_OUT_DATA, SHIFT_OUT_CLK, MSBFIRST, lower_byte);\n
      </span><span style="color:#323232;">    shiftDataOut(SHIFT_OUT_DATA, SHIFT_OUT_CLK, MSBFIRST, upper_byte);\n
      </span><span style="color:#323232;">    usleep(10);\n
      </span><span style="color:#323232;">    digitalWrite(SHIFT_OUT_LATCH, HIGH);\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">    delay(10)\n
      </span><span style="color:#323232;">    input_bin = input_bin>>1;\n
      </span><span style="color:#323232;">} \n
      </span>\n
      ```\n
      \n
      Is there anything I’m doing wrong, or any idea on where the problem may lie? I’ve already tried looking for shorts and other error sources, but the design was manufactured on a PCB and no assembly issues are noticeable.
      """
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      +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
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    +slug: "Shift-register-missing-bits"
    +title: "Shift register missing bits"
    +url: "https://discuss.tchncs.de/pictrs/image/7da4f08e-8d93-4cf1-99c9-22f2aea08d32.png"
    +body: """
      Hey friends,\n
      \n
      I have a two [daisy chained shift registers](https://i.imgur.com/tZBQ45e.png) ([74AHC595](https://www.diodes.com/assets/Datasheets/74AHC595.pdf)) which are controlled via an ESP32. I want to set one output to high at a time before switching to the next.\n
      \n
      The code seems to work, but the outputs O_9 and O_10 are not [staying high](https://i.imgur.com/v5OOE1K.png) ([zoom](https://i.imgur.com/VpMbdW3.png)) after setting them, whereas all the other ones are working fine. This is the used code snipped:\n
      \n
      ```\n
      \n
      <span style="color:#323232;">pinMode(SHIFT_OUT_DATA, OUTPUT);\n
      </span><span style="color:#323232;">pinMode(SHIFT_OUT_CLK, OUTPUT);\n
      </span><span style="color:#323232;">pinMode(SHIFT_OUT_N_EN, OUTPUT);\n
      </span><span style="color:#323232;">pinMode(SHIFT_OUT_LATCH, OUTPUT);\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">digitalWrite(SHIFT_OUT_N_EN, LOW);\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">uint16_t input_bin = 0b1000000000000000;\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">for(int i=0; i&lt;17; i++){\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">    byte upper_byte = input_bin >> 8;\n
      </span><span style="color:#323232;">    byte lower_byte = input_bin &amp; 0x00FF;\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">    digitalWrite(SHIFT_OUT_LATCH, LOW);\n
      </span><span style="color:#323232;">    shiftDataOut(SHIFT_OUT_DATA, SHIFT_OUT_CLK, MSBFIRST, lower_byte);\n
      </span><span style="color:#323232;">    shiftDataOut(SHIFT_OUT_DATA, SHIFT_OUT_CLK, MSBFIRST, upper_byte);\n
      </span><span style="color:#323232;">    usleep(10);\n
      </span><span style="color:#323232;">    digitalWrite(SHIFT_OUT_LATCH, HIGH);\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">    delay(10)\n
      </span><span style="color:#323232;">    input_bin = input_bin>>1;\n
      </span><span style="color:#323232;">} \n
      </span>\n
      ```\n
      \n
      Is there anything I’m doing wrong, or any idea on where the problem may lie? I’ve already tried looking for shorts and other error sources, but the design was manufactured on a PCB and no assembly issues are noticeable.
      """
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        **For questions about component-level electronic circuits, tools and equipment.**\n
        \n
        Rules\n
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        1: Be nice.\n
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    +slug: "Shift-register-missing-bits"
    +title: "Shift register missing bits"
    +url: "https://discuss.tchncs.de/pictrs/image/7da4f08e-8d93-4cf1-99c9-22f2aea08d32.png"
    +body: """
      Hey friends,\n
      \n
      I have a two [daisy chained shift registers](https://i.imgur.com/tZBQ45e.png) ([74AHC595](https://www.diodes.com/assets/Datasheets/74AHC595.pdf)) which are controlled via an ESP32. I want to set one output to high at a time before switching to the next.\n
      \n
      The code seems to work, but the outputs O_9 and O_10 are not [staying high](https://i.imgur.com/v5OOE1K.png) ([zoom](https://i.imgur.com/VpMbdW3.png)) after setting them, whereas all the other ones are working fine. This is the used code snipped:\n
      \n
      ```\n
      \n
      <span style="color:#323232;">pinMode(SHIFT_OUT_DATA, OUTPUT);\n
      </span><span style="color:#323232;">pinMode(SHIFT_OUT_CLK, OUTPUT);\n
      </span><span style="color:#323232;">pinMode(SHIFT_OUT_N_EN, OUTPUT);\n
      </span><span style="color:#323232;">pinMode(SHIFT_OUT_LATCH, OUTPUT);\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">digitalWrite(SHIFT_OUT_N_EN, LOW);\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">uint16_t input_bin = 0b1000000000000000;\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">for(int i=0; i&lt;17; i++){\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">    byte upper_byte = input_bin >> 8;\n
      </span><span style="color:#323232;">    byte lower_byte = input_bin &amp; 0x00FF;\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">    digitalWrite(SHIFT_OUT_LATCH, LOW);\n
      </span><span style="color:#323232;">    shiftDataOut(SHIFT_OUT_DATA, SHIFT_OUT_CLK, MSBFIRST, lower_byte);\n
      </span><span style="color:#323232;">    shiftDataOut(SHIFT_OUT_DATA, SHIFT_OUT_CLK, MSBFIRST, upper_byte);\n
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      </span><span style="color:#323232;">    digitalWrite(SHIFT_OUT_LATCH, HIGH);\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">    delay(10)\n
      </span><span style="color:#323232;">    input_bin = input_bin>>1;\n
      </span><span style="color:#323232;">} \n
      </span>\n
      ```\n
      \n
      Is there anything I’m doing wrong, or any idea on where the problem may lie? I’ve already tried looking for shorts and other error sources, but the design was manufactured on a PCB and no assembly issues are noticeable.
      """
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        **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
        ---
        """
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    +slug: "Shift-register-missing-bits"
    +title: "Shift register missing bits"
    +url: "https://discuss.tchncs.de/pictrs/image/7da4f08e-8d93-4cf1-99c9-22f2aea08d32.png"
    +body: """
      Hey friends,\n
      \n
      I have a two [daisy chained shift registers](https://i.imgur.com/tZBQ45e.png) ([74AHC595](https://www.diodes.com/assets/Datasheets/74AHC595.pdf)) which are controlled via an ESP32. I want to set one output to high at a time before switching to the next.\n
      \n
      The code seems to work, but the outputs O_9 and O_10 are not [staying high](https://i.imgur.com/v5OOE1K.png) ([zoom](https://i.imgur.com/VpMbdW3.png)) after setting them, whereas all the other ones are working fine. This is the used code snipped:\n
      \n
      ```\n
      \n
      <span style="color:#323232;">pinMode(SHIFT_OUT_DATA, OUTPUT);\n
      </span><span style="color:#323232;">pinMode(SHIFT_OUT_CLK, OUTPUT);\n
      </span><span style="color:#323232;">pinMode(SHIFT_OUT_N_EN, OUTPUT);\n
      </span><span style="color:#323232;">pinMode(SHIFT_OUT_LATCH, OUTPUT);\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">digitalWrite(SHIFT_OUT_N_EN, LOW);\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">uint16_t input_bin = 0b1000000000000000;\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">for(int i=0; i&lt;17; i++){\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">    byte upper_byte = input_bin >> 8;\n
      </span><span style="color:#323232;">    byte lower_byte = input_bin &amp; 0x00FF;\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">    digitalWrite(SHIFT_OUT_LATCH, LOW);\n
      </span><span style="color:#323232;">    shiftDataOut(SHIFT_OUT_DATA, SHIFT_OUT_CLK, MSBFIRST, lower_byte);\n
      </span><span style="color:#323232;">    shiftDataOut(SHIFT_OUT_DATA, SHIFT_OUT_CLK, MSBFIRST, upper_byte);\n
      </span><span style="color:#323232;">    usleep(10);\n
      </span><span style="color:#323232;">    digitalWrite(SHIFT_OUT_LATCH, HIGH);\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">    delay(10)\n
      </span><span style="color:#323232;">    input_bin = input_bin>>1;\n
      </span><span style="color:#323232;">} \n
      </span>\n
      ```\n
      \n
      Is there anything I’m doing wrong, or any idea on where the problem may lie? I’ve already tried looking for shorts and other error sources, but the design was manufactured on a PCB and no assembly issues are noticeable.
      """
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        **For questions about component-level electronic circuits, tools and equipment.**\n
        \n
        Rules\n
        -----\n
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        1: Be nice.\n
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    +slug: "Shift-register-missing-bits"
    +title: "Shift register missing bits"
    +url: "https://discuss.tchncs.de/pictrs/image/7da4f08e-8d93-4cf1-99c9-22f2aea08d32.png"
    +body: """
      Hey friends,\n
      \n
      I have a two [daisy chained shift registers](https://i.imgur.com/tZBQ45e.png) ([74AHC595](https://www.diodes.com/assets/Datasheets/74AHC595.pdf)) which are controlled via an ESP32. I want to set one output to high at a time before switching to the next.\n
      \n
      The code seems to work, but the outputs O_9 and O_10 are not [staying high](https://i.imgur.com/v5OOE1K.png) ([zoom](https://i.imgur.com/VpMbdW3.png)) after setting them, whereas all the other ones are working fine. This is the used code snipped:\n
      \n
      ```\n
      \n
      <span style="color:#323232;">pinMode(SHIFT_OUT_DATA, OUTPUT);\n
      </span><span style="color:#323232;">pinMode(SHIFT_OUT_CLK, OUTPUT);\n
      </span><span style="color:#323232;">pinMode(SHIFT_OUT_N_EN, OUTPUT);\n
      </span><span style="color:#323232;">pinMode(SHIFT_OUT_LATCH, OUTPUT);\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">digitalWrite(SHIFT_OUT_N_EN, LOW);\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">uint16_t input_bin = 0b1000000000000000;\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">for(int i=0; i&lt;17; i++){\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">    byte upper_byte = input_bin >> 8;\n
      </span><span style="color:#323232;">    byte lower_byte = input_bin &amp; 0x00FF;\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">    digitalWrite(SHIFT_OUT_LATCH, LOW);\n
      </span><span style="color:#323232;">    shiftDataOut(SHIFT_OUT_DATA, SHIFT_OUT_CLK, MSBFIRST, lower_byte);\n
      </span><span style="color:#323232;">    shiftDataOut(SHIFT_OUT_DATA, SHIFT_OUT_CLK, MSBFIRST, upper_byte);\n
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      </span><span style="color:#323232;">    delay(10)\n
      </span><span style="color:#323232;">    input_bin = input_bin>>1;\n
      </span><span style="color:#323232;">} \n
      </span>\n
      ```\n
      \n
      Is there anything I’m doing wrong, or any idea on where the problem may lie? I’ve already tried looking for shorts and other error sources, but the design was manufactured on a PCB and no assembly issues are noticeable.
      """
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}
"App\Security\Voter\UserVoter"
null
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App\Entity\EntryComment {#4356
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        **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
        ---
        """
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    +domain: Proxies\__CG__\App\Entity\Domain {#1889 …}
    +slug: "Shift-register-missing-bits"
    +title: "Shift register missing bits"
    +url: "https://discuss.tchncs.de/pictrs/image/7da4f08e-8d93-4cf1-99c9-22f2aea08d32.png"
    +body: """
      Hey friends,\n
      \n
      I have a two [daisy chained shift registers](https://i.imgur.com/tZBQ45e.png) ([74AHC595](https://www.diodes.com/assets/Datasheets/74AHC595.pdf)) which are controlled via an ESP32. I want to set one output to high at a time before switching to the next.\n
      \n
      The code seems to work, but the outputs O_9 and O_10 are not [staying high](https://i.imgur.com/v5OOE1K.png) ([zoom](https://i.imgur.com/VpMbdW3.png)) after setting them, whereas all the other ones are working fine. This is the used code snipped:\n
      \n
      ```\n
      \n
      <span style="color:#323232;">pinMode(SHIFT_OUT_DATA, OUTPUT);\n
      </span><span style="color:#323232;">pinMode(SHIFT_OUT_CLK, OUTPUT);\n
      </span><span style="color:#323232;">pinMode(SHIFT_OUT_N_EN, OUTPUT);\n
      </span><span style="color:#323232;">pinMode(SHIFT_OUT_LATCH, OUTPUT);\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">digitalWrite(SHIFT_OUT_N_EN, LOW);\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">uint16_t input_bin = 0b1000000000000000;\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">for(int i=0; i&lt;17; i++){\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">    byte upper_byte = input_bin >> 8;\n
      </span><span style="color:#323232;">    byte lower_byte = input_bin &amp; 0x00FF;\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">    digitalWrite(SHIFT_OUT_LATCH, LOW);\n
      </span><span style="color:#323232;">    shiftDataOut(SHIFT_OUT_DATA, SHIFT_OUT_CLK, MSBFIRST, lower_byte);\n
      </span><span style="color:#323232;">    shiftDataOut(SHIFT_OUT_DATA, SHIFT_OUT_CLK, MSBFIRST, upper_byte);\n
      </span><span style="color:#323232;">    usleep(10);\n
      </span><span style="color:#323232;">    digitalWrite(SHIFT_OUT_LATCH, HIGH);\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">    delay(10)\n
      </span><span style="color:#323232;">    input_bin = input_bin>>1;\n
      </span><span style="color:#323232;">} \n
      </span>\n
      ```\n
      \n
      Is there anything I’m doing wrong, or any idea on where the problem may lie? I’ve already tried looking for shorts and other error sources, but the design was manufactured on a PCB and no assembly issues are noticeable.
      """
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  +body: "Hmmmm do you want to write to both shift register at the same time? I say this because you’re looping 16 times, but seem to be sending the high and low bytes out 16 times over rather than one bit each time, although you are shifting the input."
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        \n
        Rules\n
        -----\n
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    +body: """
      Hey friends,\n
      \n
      I have a two [daisy chained shift registers](https://i.imgur.com/tZBQ45e.png) ([74AHC595](https://www.diodes.com/assets/Datasheets/74AHC595.pdf)) which are controlled via an ESP32. I want to set one output to high at a time before switching to the next.\n
      \n
      The code seems to work, but the outputs O_9 and O_10 are not [staying high](https://i.imgur.com/v5OOE1K.png) ([zoom](https://i.imgur.com/VpMbdW3.png)) after setting them, whereas all the other ones are working fine. This is the used code snipped:\n
      \n
      ```\n
      \n
      <span style="color:#323232;">pinMode(SHIFT_OUT_DATA, OUTPUT);\n
      </span><span style="color:#323232;">pinMode(SHIFT_OUT_CLK, OUTPUT);\n
      </span><span style="color:#323232;">pinMode(SHIFT_OUT_N_EN, OUTPUT);\n
      </span><span style="color:#323232;">pinMode(SHIFT_OUT_LATCH, OUTPUT);\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">digitalWrite(SHIFT_OUT_N_EN, LOW);\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">uint16_t input_bin = 0b1000000000000000;\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">for(int i=0; i&lt;17; i++){\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">    byte upper_byte = input_bin >> 8;\n
      </span><span style="color:#323232;">    byte lower_byte = input_bin &amp; 0x00FF;\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">    digitalWrite(SHIFT_OUT_LATCH, LOW);\n
      </span><span style="color:#323232;">    shiftDataOut(SHIFT_OUT_DATA, SHIFT_OUT_CLK, MSBFIRST, lower_byte);\n
      </span><span style="color:#323232;">    shiftDataOut(SHIFT_OUT_DATA, SHIFT_OUT_CLK, MSBFIRST, upper_byte);\n
      </span><span style="color:#323232;">    usleep(10);\n
      </span><span style="color:#323232;">    digitalWrite(SHIFT_OUT_LATCH, HIGH);\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">    delay(10)\n
      </span><span style="color:#323232;">    input_bin = input_bin>>1;\n
      </span><span style="color:#323232;">} \n
      </span>\n
      ```\n
      \n
      Is there anything I’m doing wrong, or any idea on where the problem may lie? I’ve already tried looking for shorts and other error sources, but the design was manufactured on a PCB and no assembly issues are noticeable.
      """
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  +body: "Hmmmm do you want to write to both shift register at the same time? I say this because you’re looping 16 times, but seem to be sending the high and low bytes out 16 times over rather than one bit each time, although you are shifting the input."
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        \n
        Rules\n
        -----\n
        \n
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        \n
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    +slug: "Shift-register-missing-bits"
    +title: "Shift register missing bits"
    +url: "https://discuss.tchncs.de/pictrs/image/7da4f08e-8d93-4cf1-99c9-22f2aea08d32.png"
    +body: """
      Hey friends,\n
      \n
      I have a two [daisy chained shift registers](https://i.imgur.com/tZBQ45e.png) ([74AHC595](https://www.diodes.com/assets/Datasheets/74AHC595.pdf)) which are controlled via an ESP32. I want to set one output to high at a time before switching to the next.\n
      \n
      The code seems to work, but the outputs O_9 and O_10 are not [staying high](https://i.imgur.com/v5OOE1K.png) ([zoom](https://i.imgur.com/VpMbdW3.png)) after setting them, whereas all the other ones are working fine. This is the used code snipped:\n
      \n
      ```\n
      \n
      <span style="color:#323232;">pinMode(SHIFT_OUT_DATA, OUTPUT);\n
      </span><span style="color:#323232;">pinMode(SHIFT_OUT_CLK, OUTPUT);\n
      </span><span style="color:#323232;">pinMode(SHIFT_OUT_N_EN, OUTPUT);\n
      </span><span style="color:#323232;">pinMode(SHIFT_OUT_LATCH, OUTPUT);\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">digitalWrite(SHIFT_OUT_N_EN, LOW);\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">uint16_t input_bin = 0b1000000000000000;\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">for(int i=0; i&lt;17; i++){\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">    byte upper_byte = input_bin >> 8;\n
      </span><span style="color:#323232;">    byte lower_byte = input_bin &amp; 0x00FF;\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">    digitalWrite(SHIFT_OUT_LATCH, LOW);\n
      </span><span style="color:#323232;">    shiftDataOut(SHIFT_OUT_DATA, SHIFT_OUT_CLK, MSBFIRST, lower_byte);\n
      </span><span style="color:#323232;">    shiftDataOut(SHIFT_OUT_DATA, SHIFT_OUT_CLK, MSBFIRST, upper_byte);\n
      </span><span style="color:#323232;">    usleep(10);\n
      </span><span style="color:#323232;">    digitalWrite(SHIFT_OUT_LATCH, HIGH);\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">    delay(10)\n
      </span><span style="color:#323232;">    input_bin = input_bin>>1;\n
      </span><span style="color:#323232;">} \n
      </span>\n
      ```\n
      \n
      Is there anything I’m doing wrong, or any idea on where the problem may lie? I’ve already tried looking for shorts and other error sources, but the design was manufactured on a PCB and no assembly issues are noticeable.
      """
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  +body: "Hmmmm do you want to write to both shift register at the same time? I say this because you’re looping 16 times, but seem to be sending the high and low bytes out 16 times over rather than one bit each time, although you are shifting the input."
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        \n
        Rules\n
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    +slug: "Shift-register-missing-bits"
    +title: "Shift register missing bits"
    +url: "https://discuss.tchncs.de/pictrs/image/7da4f08e-8d93-4cf1-99c9-22f2aea08d32.png"
    +body: """
      Hey friends,\n
      \n
      I have a two [daisy chained shift registers](https://i.imgur.com/tZBQ45e.png) ([74AHC595](https://www.diodes.com/assets/Datasheets/74AHC595.pdf)) which are controlled via an ESP32. I want to set one output to high at a time before switching to the next.\n
      \n
      The code seems to work, but the outputs O_9 and O_10 are not [staying high](https://i.imgur.com/v5OOE1K.png) ([zoom](https://i.imgur.com/VpMbdW3.png)) after setting them, whereas all the other ones are working fine. This is the used code snipped:\n
      \n
      ```\n
      \n
      <span style="color:#323232;">pinMode(SHIFT_OUT_DATA, OUTPUT);\n
      </span><span style="color:#323232;">pinMode(SHIFT_OUT_CLK, OUTPUT);\n
      </span><span style="color:#323232;">pinMode(SHIFT_OUT_N_EN, OUTPUT);\n
      </span><span style="color:#323232;">pinMode(SHIFT_OUT_LATCH, OUTPUT);\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">digitalWrite(SHIFT_OUT_N_EN, LOW);\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">uint16_t input_bin = 0b1000000000000000;\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">for(int i=0; i&lt;17; i++){\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">    byte upper_byte = input_bin >> 8;\n
      </span><span style="color:#323232;">    byte lower_byte = input_bin &amp; 0x00FF;\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">    digitalWrite(SHIFT_OUT_LATCH, LOW);\n
      </span><span style="color:#323232;">    shiftDataOut(SHIFT_OUT_DATA, SHIFT_OUT_CLK, MSBFIRST, lower_byte);\n
      </span><span style="color:#323232;">    shiftDataOut(SHIFT_OUT_DATA, SHIFT_OUT_CLK, MSBFIRST, upper_byte);\n
      </span><span style="color:#323232;">    usleep(10);\n
      </span><span style="color:#323232;">    digitalWrite(SHIFT_OUT_LATCH, HIGH);\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">    delay(10)\n
      </span><span style="color:#323232;">    input_bin = input_bin>>1;\n
      </span><span style="color:#323232;">} \n
      </span>\n
      ```\n
      \n
      Is there anything I’m doing wrong, or any idea on where the problem may lie? I’ve already tried looking for shorts and other error sources, but the design was manufactured on a PCB and no assembly issues are noticeable.
      """
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  }
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  +body: "Maybe I’m getting ahead of myself, but maybe try using digitalWrite for a single bit instead of shiftDataOut?"
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      +title: "askelectronics"
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        **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
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        ---
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    +image: Proxies\__CG__\App\Entity\Image {#1978 …}
    +domain: Proxies\__CG__\App\Entity\Domain {#1889 …}
    +slug: "Shift-register-missing-bits"
    +title: "Shift register missing bits"
    +url: "https://discuss.tchncs.de/pictrs/image/7da4f08e-8d93-4cf1-99c9-22f2aea08d32.png"
    +body: """
      Hey friends,\n
      \n
      I have a two [daisy chained shift registers](https://i.imgur.com/tZBQ45e.png) ([74AHC595](https://www.diodes.com/assets/Datasheets/74AHC595.pdf)) which are controlled via an ESP32. I want to set one output to high at a time before switching to the next.\n
      \n
      The code seems to work, but the outputs O_9 and O_10 are not [staying high](https://i.imgur.com/v5OOE1K.png) ([zoom](https://i.imgur.com/VpMbdW3.png)) after setting them, whereas all the other ones are working fine. This is the used code snipped:\n
      \n
      ```\n
      \n
      <span style="color:#323232;">pinMode(SHIFT_OUT_DATA, OUTPUT);\n
      </span><span style="color:#323232;">pinMode(SHIFT_OUT_CLK, OUTPUT);\n
      </span><span style="color:#323232;">pinMode(SHIFT_OUT_N_EN, OUTPUT);\n
      </span><span style="color:#323232;">pinMode(SHIFT_OUT_LATCH, OUTPUT);\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">digitalWrite(SHIFT_OUT_N_EN, LOW);\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">uint16_t input_bin = 0b1000000000000000;\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">for(int i=0; i&lt;17; i++){\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">    byte upper_byte = input_bin >> 8;\n
      </span><span style="color:#323232;">    byte lower_byte = input_bin &amp; 0x00FF;\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">    digitalWrite(SHIFT_OUT_LATCH, LOW);\n
      </span><span style="color:#323232;">    shiftDataOut(SHIFT_OUT_DATA, SHIFT_OUT_CLK, MSBFIRST, lower_byte);\n
      </span><span style="color:#323232;">    shiftDataOut(SHIFT_OUT_DATA, SHIFT_OUT_CLK, MSBFIRST, upper_byte);\n
      </span><span style="color:#323232;">    usleep(10);\n
      </span><span style="color:#323232;">    digitalWrite(SHIFT_OUT_LATCH, HIGH);\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">    delay(10)\n
      </span><span style="color:#323232;">    input_bin = input_bin>>1;\n
      </span><span style="color:#323232;">} \n
      </span>\n
      ```\n
      \n
      Is there anything I’m doing wrong, or any idea on where the problem may lie? I’ve already tried looking for shorts and other error sources, but the design was manufactured on a PCB and no assembly issues are noticeable.
      """
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          date: 2023-09-28 04:35:40.0 +02:00
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      +root: App\Entity\EntryComment {#4190}
      +body: "Also try upping the usleep call?"
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    +root: App\Entity\EntryComment {#4190}
    +body: "Hmmmm do you want to write to both shift register at the same time? I say this because you’re looping 16 times, but seem to be sending the high and low bytes out 16 times over rather than one bit each time, although you are shifting the input."
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  +body: "Maybe I’m getting ahead of myself, but maybe try using digitalWrite for a single bit instead of shiftDataOut?"
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}
"App\Security\Voter\UserVoter"
App\Entity\EntryComment {#4370
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      +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
        ---
        """
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    +image: Proxies\__CG__\App\Entity\Image {#1978 …}
    +domain: Proxies\__CG__\App\Entity\Domain {#1889 …}
    +slug: "Shift-register-missing-bits"
    +title: "Shift register missing bits"
    +url: "https://discuss.tchncs.de/pictrs/image/7da4f08e-8d93-4cf1-99c9-22f2aea08d32.png"
    +body: """
      Hey friends,\n
      \n
      I have a two [daisy chained shift registers](https://i.imgur.com/tZBQ45e.png) ([74AHC595](https://www.diodes.com/assets/Datasheets/74AHC595.pdf)) which are controlled via an ESP32. I want to set one output to high at a time before switching to the next.\n
      \n
      The code seems to work, but the outputs O_9 and O_10 are not [staying high](https://i.imgur.com/v5OOE1K.png) ([zoom](https://i.imgur.com/VpMbdW3.png)) after setting them, whereas all the other ones are working fine. This is the used code snipped:\n
      \n
      ```\n
      \n
      <span style="color:#323232;">pinMode(SHIFT_OUT_DATA, OUTPUT);\n
      </span><span style="color:#323232;">pinMode(SHIFT_OUT_CLK, OUTPUT);\n
      </span><span style="color:#323232;">pinMode(SHIFT_OUT_N_EN, OUTPUT);\n
      </span><span style="color:#323232;">pinMode(SHIFT_OUT_LATCH, OUTPUT);\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">digitalWrite(SHIFT_OUT_N_EN, LOW);\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">uint16_t input_bin = 0b1000000000000000;\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">for(int i=0; i&lt;17; i++){\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">    byte upper_byte = input_bin >> 8;\n
      </span><span style="color:#323232;">    byte lower_byte = input_bin &amp; 0x00FF;\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">    digitalWrite(SHIFT_OUT_LATCH, LOW);\n
      </span><span style="color:#323232;">    shiftDataOut(SHIFT_OUT_DATA, SHIFT_OUT_CLK, MSBFIRST, lower_byte);\n
      </span><span style="color:#323232;">    shiftDataOut(SHIFT_OUT_DATA, SHIFT_OUT_CLK, MSBFIRST, upper_byte);\n
      </span><span style="color:#323232;">    usleep(10);\n
      </span><span style="color:#323232;">    digitalWrite(SHIFT_OUT_LATCH, HIGH);\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">    delay(10)\n
      </span><span style="color:#323232;">    input_bin = input_bin>>1;\n
      </span><span style="color:#323232;">} \n
      </span>\n
      ```\n
      \n
      Is there anything I’m doing wrong, or any idea on where the problem may lie? I’ve already tried looking for shorts and other error sources, but the design was manufactured on a PCB and no assembly issues are noticeable.
      """
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        Rules\n
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    +body: """
      Hey friends,\n
      \n
      I have a two [daisy chained shift registers](https://i.imgur.com/tZBQ45e.png) ([74AHC595](https://www.diodes.com/assets/Datasheets/74AHC595.pdf)) which are controlled via an ESP32. I want to set one output to high at a time before switching to the next.\n
      \n
      The code seems to work, but the outputs O_9 and O_10 are not [staying high](https://i.imgur.com/v5OOE1K.png) ([zoom](https://i.imgur.com/VpMbdW3.png)) after setting them, whereas all the other ones are working fine. This is the used code snipped:\n
      \n
      ```\n
      \n
      <span style="color:#323232;">pinMode(SHIFT_OUT_DATA, OUTPUT);\n
      </span><span style="color:#323232;">pinMode(SHIFT_OUT_CLK, OUTPUT);\n
      </span><span style="color:#323232;">pinMode(SHIFT_OUT_N_EN, OUTPUT);\n
      </span><span style="color:#323232;">pinMode(SHIFT_OUT_LATCH, OUTPUT);\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">digitalWrite(SHIFT_OUT_N_EN, LOW);\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">uint16_t input_bin = 0b1000000000000000;\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">for(int i=0; i&lt;17; i++){\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">    byte upper_byte = input_bin >> 8;\n
      </span><span style="color:#323232;">    byte lower_byte = input_bin &amp; 0x00FF;\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">    digitalWrite(SHIFT_OUT_LATCH, LOW);\n
      </span><span style="color:#323232;">    shiftDataOut(SHIFT_OUT_DATA, SHIFT_OUT_CLK, MSBFIRST, lower_byte);\n
      </span><span style="color:#323232;">    shiftDataOut(SHIFT_OUT_DATA, SHIFT_OUT_CLK, MSBFIRST, upper_byte);\n
      </span><span style="color:#323232;">    usleep(10);\n
      </span><span style="color:#323232;">    digitalWrite(SHIFT_OUT_LATCH, HIGH);\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">    delay(10)\n
      </span><span style="color:#323232;">    input_bin = input_bin>>1;\n
      </span><span style="color:#323232;">} \n
      </span>\n
      ```\n
      \n
      Is there anything I’m doing wrong, or any idea on where the problem may lie? I’ve already tried looking for shorts and other error sources, but the design was manufactured on a PCB and no assembly issues are noticeable.
      """
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        Rules\n
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    +slug: "Shift-register-missing-bits"
    +title: "Shift register missing bits"
    +url: "https://discuss.tchncs.de/pictrs/image/7da4f08e-8d93-4cf1-99c9-22f2aea08d32.png"
    +body: """
      Hey friends,\n
      \n
      I have a two [daisy chained shift registers](https://i.imgur.com/tZBQ45e.png) ([74AHC595](https://www.diodes.com/assets/Datasheets/74AHC595.pdf)) which are controlled via an ESP32. I want to set one output to high at a time before switching to the next.\n
      \n
      The code seems to work, but the outputs O_9 and O_10 are not [staying high](https://i.imgur.com/v5OOE1K.png) ([zoom](https://i.imgur.com/VpMbdW3.png)) after setting them, whereas all the other ones are working fine. This is the used code snipped:\n
      \n
      ```\n
      \n
      <span style="color:#323232;">pinMode(SHIFT_OUT_DATA, OUTPUT);\n
      </span><span style="color:#323232;">pinMode(SHIFT_OUT_CLK, OUTPUT);\n
      </span><span style="color:#323232;">pinMode(SHIFT_OUT_N_EN, OUTPUT);\n
      </span><span style="color:#323232;">pinMode(SHIFT_OUT_LATCH, OUTPUT);\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">digitalWrite(SHIFT_OUT_N_EN, LOW);\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">uint16_t input_bin = 0b1000000000000000;\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">for(int i=0; i&lt;17; i++){\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">    byte upper_byte = input_bin >> 8;\n
      </span><span style="color:#323232;">    byte lower_byte = input_bin &amp; 0x00FF;\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">    digitalWrite(SHIFT_OUT_LATCH, LOW);\n
      </span><span style="color:#323232;">    shiftDataOut(SHIFT_OUT_DATA, SHIFT_OUT_CLK, MSBFIRST, lower_byte);\n
      </span><span style="color:#323232;">    shiftDataOut(SHIFT_OUT_DATA, SHIFT_OUT_CLK, MSBFIRST, upper_byte);\n
      </span><span style="color:#323232;">    usleep(10);\n
      </span><span style="color:#323232;">    digitalWrite(SHIFT_OUT_LATCH, HIGH);\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">    delay(10)\n
      </span><span style="color:#323232;">    input_bin = input_bin>>1;\n
      </span><span style="color:#323232;">} \n
      </span>\n
      ```\n
      \n
      Is there anything I’m doing wrong, or any idea on where the problem may lie? I’ve already tried looking for shorts and other error sources, but the design was manufactured on a PCB and no assembly issues are noticeable.
      """
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      +body: "Hmmmm do you want to write to both shift register at the same time? I say this because you’re looping 16 times, but seem to be sending the high and low bytes out 16 times over rather than one bit each time, although you are shifting the input."
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    +body: "Maybe I’m getting ahead of myself, but maybe try using digitalWrite for a single bit instead of shiftDataOut?"
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      +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
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    +image: Proxies\__CG__\App\Entity\Image {#1978 …}
    +domain: Proxies\__CG__\App\Entity\Domain {#1889 …}
    +slug: "Shift-register-missing-bits"
    +title: "Shift register missing bits"
    +url: "https://discuss.tchncs.de/pictrs/image/7da4f08e-8d93-4cf1-99c9-22f2aea08d32.png"
    +body: """
      Hey friends,\n
      \n
      I have a two [daisy chained shift registers](https://i.imgur.com/tZBQ45e.png) ([74AHC595](https://www.diodes.com/assets/Datasheets/74AHC595.pdf)) which are controlled via an ESP32. I want to set one output to high at a time before switching to the next.\n
      \n
      The code seems to work, but the outputs O_9 and O_10 are not [staying high](https://i.imgur.com/v5OOE1K.png) ([zoom](https://i.imgur.com/VpMbdW3.png)) after setting them, whereas all the other ones are working fine. This is the used code snipped:\n
      \n
      ```\n
      \n
      <span style="color:#323232;">pinMode(SHIFT_OUT_DATA, OUTPUT);\n
      </span><span style="color:#323232;">pinMode(SHIFT_OUT_CLK, OUTPUT);\n
      </span><span style="color:#323232;">pinMode(SHIFT_OUT_N_EN, OUTPUT);\n
      </span><span style="color:#323232;">pinMode(SHIFT_OUT_LATCH, OUTPUT);\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">digitalWrite(SHIFT_OUT_N_EN, LOW);\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">uint16_t input_bin = 0b1000000000000000;\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">for(int i=0; i&lt;17; i++){\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">    byte upper_byte = input_bin >> 8;\n
      </span><span style="color:#323232;">    byte lower_byte = input_bin &amp; 0x00FF;\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">    digitalWrite(SHIFT_OUT_LATCH, LOW);\n
      </span><span style="color:#323232;">    shiftDataOut(SHIFT_OUT_DATA, SHIFT_OUT_CLK, MSBFIRST, lower_byte);\n
      </span><span style="color:#323232;">    shiftDataOut(SHIFT_OUT_DATA, SHIFT_OUT_CLK, MSBFIRST, upper_byte);\n
      </span><span style="color:#323232;">    usleep(10);\n
      </span><span style="color:#323232;">    digitalWrite(SHIFT_OUT_LATCH, HIGH);\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;">    delay(10)\n
      </span><span style="color:#323232;">    input_bin = input_bin>>1;\n
      </span><span style="color:#323232;">} \n
      </span>\n
      ```\n
      \n
      Is there anything I’m doing wrong, or any idea on where the problem may lie? I’ve already tried looking for shorts and other error sources, but the design was manufactured on a PCB and no assembly issues are noticeable.
      """
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      +body: "Hmmmm do you want to write to both shift register at the same time? I say this because you’re looping 16 times, but seem to be sending the high and low bytes out 16 times over rather than one bit each time, although you are shifting the input."
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    +body: "Maybe I’m getting ahead of myself, but maybe try using digitalWrite for a single bit instead of shiftDataOut?"
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    \n
    Rules\n
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