GET https://kbin.spritesserver.nl/m/askelectronics@discuss.tchncs.de/t/132/SOLVED-A-pull-up-resistor-increases-the-low-side-of-a/votes/down

Response
200 OK
IP
3.135.187.121
Profiled on
Token
9ee6e3

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 …}
}
 0.15 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 …}
}
 0.03 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
# 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

# Result Attributes Object
1 DENIED ROLE_USER 
null
 
"Scheb\TwoFactorBundle\Security\Authorization\Voter\TwoFactorInProgressVoter"
 ACCESS ABSTAIN 
"Symfony\Component\Security\Core\Authorization\Voter\RoleHierarchyVoter"
 ACCESS DENIED 
"App\Security\Voter\EntryCommentVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\EntryVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\MagazineVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\MessageThreadVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\MessageVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\NotificationVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\OAuth2UserConsentVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\PostCommentVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\PostVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\UserVoter"
 ACCESS ABSTAIN
Show voter details
2 DENIED moderate 
App\Entity\Entry {#1817
  +user: Proxies\__CG__\App\Entity\User {#1901 …}
  +magazine: App\Entity\Magazine {#285
    +icon: Proxies\__CG__\App\Entity\Image {#265 …}
    +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 {#293
      date: 2024-10-20 10:40:08.0 +02:00
    }
    +markedForDeletionAt: null
    +tags: null
    +moderators: Doctrine\ORM\PersistentCollection {#256 …}
    +ownershipRequests: Doctrine\ORM\PersistentCollection {#252 …}
    +moderatorRequests: Doctrine\ORM\PersistentCollection {#241 …}
    +entries: Doctrine\ORM\PersistentCollection {#199 …}
    +posts: Doctrine\ORM\PersistentCollection {#157 …}
    +subscriptions: Doctrine\ORM\PersistentCollection {#219 …}
    +bans: Doctrine\ORM\PersistentCollection {#136 …}
    +reports: Doctrine\ORM\PersistentCollection {#122 …}
    +badges: Doctrine\ORM\PersistentCollection {#100 …}
    +logs: Doctrine\ORM\PersistentCollection {#90 …}
    +awards: Doctrine\ORM\PersistentCollection {#79 …}
    +categories: Doctrine\ORM\PersistentCollection {#66 …}
    -id: 11
    +apId: "askelectronics@discuss.tchncs.de"
    +apProfileId: "https://discuss.tchncs.de/c/askelectronics"
    +apPublicUrl: "https://discuss.tchncs.de/c/askelectronics"
    +apFollowersUrl: "https://discuss.tchncs.de/c/askelectronics/followers"
    +apInboxUrl: "https://discuss.tchncs.de/inbox"
    +apDomain: "discuss.tchncs.de"
    +apPreferredUsername: "askelectronics"
    +apDiscoverable: true
    +apManuallyApprovesFollowers: null
    +privateKey: null
    +publicKey: null
    +apFetchedAt: DateTime @1727247714 {#296
      date: 2024-09-25 09:01:54.0 +02:00
    }
    +apDeletedAt: null
    +apTimeoutAt: null
    +visibility: "visible             "
    +createdAt: DateTimeImmutable @1687144409 {#299
      date: 2023-06-19 05:13:29.0 +02:00
    }
  }
  +image: Proxies\__CG__\App\Entity\Image {#1895 …}
  +domain: Proxies\__CG__\App\Entity\Domain {#1879 …}
  +slug: "SOLVED-A-pull-up-resistor-increases-the-low-side-of-a"
  +title: "[SOLVED] A pull-up resistor increases the low side of a signal, how can I counteract it?"
  +url: "https://electronics.stackexchange.com/q/670924/107963"
  +body: """
    Solution\n
    --------\n
    \n
    Using an open drain buffer like the `74LVC1G07` did the trick. Note that this part only works for inputs with a pull-up resistor. There are other parts from the same lineup that can work with any input.\n
    \n
    Problem\n
    -------\n
    \n
    > I have an ebike computer that has two inputs that accept square wave signals. The range is 0-5V. One of the inputs has no pull-up/down resistors on it. When I hook up a device producing signal, the signal is detected correctly. Both highs and lows are detected correctly. The other input has a built-in pull-up resistor. When I hook the same signal to it, only the high side is detected. Measuring the voltage of the low side, it's a bit higher than when hooked to the other input and I'm guessing it isn't crossing the low threshold the computer expects in order to register the low.\n
    \n
    > Am I right in thinking that the pull-up resistor is increasing the lows?\n
    \n
    > Is it possible to counteract the internal pull-up resistor by hooking a pull-down resistor to the input?\n
    \n
    > I'm a software guy with decent soldering skills and minimal knowledge in electronics so please answer like I'm not the brightest electronic bulb on the tree.\n
    \n
    > Thank you in advance!\n
    \n
    Cross-posting my question from StackExchange.
    """
  +type: "link"
  +lang: "en"
  +isOc: false
  +hasEmbed: false
  +commentCount: 6
  +favouriteCount: 3
  +score: 0
  +isAdult: false
  +sticky: false
  +lastActive: DateTime @1687328506 {#1360
    date: 2023-06-21 08:21:46.0 +02:00
  }
  +ip: null
  +adaAmount: 0
  +tags: null
  +mentions: null
  +comments: Doctrine\ORM\PersistentCollection {#1951 …}
  +votes: Doctrine\ORM\PersistentCollection {#1395 …}
  +reports: Doctrine\ORM\PersistentCollection {#2400 …}
  +favourites: Doctrine\ORM\PersistentCollection {#1890 …}
  +notifications: Doctrine\ORM\PersistentCollection {#1902 …}
  +badges: Doctrine\ORM\PersistentCollection {#1891 …}
  +children: []
  -id: 132
  -titleTs: "'counteract':17 'increas':7 'low':9 'pull':4 'pull-up':3 'resistor':6 'side':10 'signal':13 'solv':1"
  -bodyTs: "'-5':60 '/down':71 '0':59 '74lvc1g07':9 'accept':52 'advanc':227 'answer':212 'bit':131 'brightest':218 'buffer':6 'built':101 'built-in':100 'bulb':220 'comput':46,152 'correct':87,94 'counteract':179 'cross':147,229 'cross-post':228 'decent':202 'detect':86,93,120 'devic':80 'drain':5 'ebik':45 'electron':209,219 'expect':153 'guess':143 'guy':200 'high':89,117 'higher':132 'hook':77,109,135,187 'increas':172 'input':20,40,50,65,97,139,195 'intern':181 'isn':145 'knowledg':207 'like':7,213 'lineup':34 'low':91,126,149,159,174 'm':142,197,215 'measur':121 'minim':206 'note':13 'one':62 'open':4 'order':155 'part':16,30 'pleas':211 'possibl':177 'post':230 'problem':41 'produc':81 'pull':24,69,104,168,183,190 'pull-down':189 'pull-up':23,68,103,167,182 'question':232 'rang':57 'regist':157 'resistor':26,72,106,170,185,192 'right':162 'side':118,127 'signal':55,82,84,112 'skill':204 'softwar':199 'solder':203 'solut':1 'squar':53 'stackexchang':234 'thank':224 'think':164 'threshold':150 'tree':223 'trick':12 'two':49 'use':2 'v':61 'voltag':123 'wave':54 'work':18,37"
  +cross: false
  +upVotes: 0
  +downVotes: 0
  +ranking: 1687130578
  +visibility: "visible             "
  +apId: "https://lemmy.ca/post/738378"
  +editedAt: DateTimeImmutable @1687363171 {#1853
    date: 2023-06-21 17:59:31.0 +02:00
  }
  +createdAt: DateTimeImmutable @1687102078 {#1850
    date: 2023-06-18 17:27:58.0 +02:00
  }
}
 
"Scheb\TwoFactorBundle\Security\Authorization\Voter\TwoFactorInProgressVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\EntryCommentVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\EntryVoter"
 ACCESS DENIED 
"App\Security\Voter\MagazineVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\MessageThreadVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\MessageVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\NotificationVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\OAuth2UserConsentVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\PostCommentVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\PostVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\UserVoter"
 ACCESS ABSTAIN
Show voter details
3 DENIED edit 
App\Entity\Entry {#1817
  +user: Proxies\__CG__\App\Entity\User {#1901 …}
  +magazine: App\Entity\Magazine {#285
    +icon: Proxies\__CG__\App\Entity\Image {#265 …}
    +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 {#293
      date: 2024-10-20 10:40:08.0 +02:00
    }
    +markedForDeletionAt: null
    +tags: null
    +moderators: Doctrine\ORM\PersistentCollection {#256 …}
    +ownershipRequests: Doctrine\ORM\PersistentCollection {#252 …}
    +moderatorRequests: Doctrine\ORM\PersistentCollection {#241 …}
    +entries: Doctrine\ORM\PersistentCollection {#199 …}
    +posts: Doctrine\ORM\PersistentCollection {#157 …}
    +subscriptions: Doctrine\ORM\PersistentCollection {#219 …}
    +bans: Doctrine\ORM\PersistentCollection {#136 …}
    +reports: Doctrine\ORM\PersistentCollection {#122 …}
    +badges: Doctrine\ORM\PersistentCollection {#100 …}
    +logs: Doctrine\ORM\PersistentCollection {#90 …}
    +awards: Doctrine\ORM\PersistentCollection {#79 …}
    +categories: Doctrine\ORM\PersistentCollection {#66 …}
    -id: 11
    +apId: "askelectronics@discuss.tchncs.de"
    +apProfileId: "https://discuss.tchncs.de/c/askelectronics"
    +apPublicUrl: "https://discuss.tchncs.de/c/askelectronics"
    +apFollowersUrl: "https://discuss.tchncs.de/c/askelectronics/followers"
    +apInboxUrl: "https://discuss.tchncs.de/inbox"
    +apDomain: "discuss.tchncs.de"
    +apPreferredUsername: "askelectronics"
    +apDiscoverable: true
    +apManuallyApprovesFollowers: null
    +privateKey: null
    +publicKey: null
    +apFetchedAt: DateTime @1727247714 {#296
      date: 2024-09-25 09:01:54.0 +02:00
    }
    +apDeletedAt: null
    +apTimeoutAt: null
    +visibility: "visible             "
    +createdAt: DateTimeImmutable @1687144409 {#299
      date: 2023-06-19 05:13:29.0 +02:00
    }
  }
  +image: Proxies\__CG__\App\Entity\Image {#1895 …}
  +domain: Proxies\__CG__\App\Entity\Domain {#1879 …}
  +slug: "SOLVED-A-pull-up-resistor-increases-the-low-side-of-a"
  +title: "[SOLVED] A pull-up resistor increases the low side of a signal, how can I counteract it?"
  +url: "https://electronics.stackexchange.com/q/670924/107963"
  +body: """
    Solution\n
    --------\n
    \n
    Using an open drain buffer like the `74LVC1G07` did the trick. Note that this part only works for inputs with a pull-up resistor. There are other parts from the same lineup that can work with any input.\n
    \n
    Problem\n
    -------\n
    \n
    > I have an ebike computer that has two inputs that accept square wave signals. The range is 0-5V. One of the inputs has no pull-up/down resistors on it. When I hook up a device producing signal, the signal is detected correctly. Both highs and lows are detected correctly. The other input has a built-in pull-up resistor. When I hook the same signal to it, only the high side is detected. Measuring the voltage of the low side, it's a bit higher than when hooked to the other input and I'm guessing it isn't crossing the low threshold the computer expects in order to register the low.\n
    \n
    > Am I right in thinking that the pull-up resistor is increasing the lows?\n
    \n
    > Is it possible to counteract the internal pull-up resistor by hooking a pull-down resistor to the input?\n
    \n
    > I'm a software guy with decent soldering skills and minimal knowledge in electronics so please answer like I'm not the brightest electronic bulb on the tree.\n
    \n
    > Thank you in advance!\n
    \n
    Cross-posting my question from StackExchange.
    """
  +type: "link"
  +lang: "en"
  +isOc: false
  +hasEmbed: false
  +commentCount: 6
  +favouriteCount: 3
  +score: 0
  +isAdult: false
  +sticky: false
  +lastActive: DateTime @1687328506 {#1360
    date: 2023-06-21 08:21:46.0 +02:00
  }
  +ip: null
  +adaAmount: 0
  +tags: null
  +mentions: null
  +comments: Doctrine\ORM\PersistentCollection {#1951 …}
  +votes: Doctrine\ORM\PersistentCollection {#1395 …}
  +reports: Doctrine\ORM\PersistentCollection {#2400 …}
  +favourites: Doctrine\ORM\PersistentCollection {#1890 …}
  +notifications: Doctrine\ORM\PersistentCollection {#1902 …}
  +badges: Doctrine\ORM\PersistentCollection {#1891 …}
  +children: []
  -id: 132
  -titleTs: "'counteract':17 'increas':7 'low':9 'pull':4 'pull-up':3 'resistor':6 'side':10 'signal':13 'solv':1"
  -bodyTs: "'-5':60 '/down':71 '0':59 '74lvc1g07':9 'accept':52 'advanc':227 'answer':212 'bit':131 'brightest':218 'buffer':6 'built':101 'built-in':100 'bulb':220 'comput':46,152 'correct':87,94 'counteract':179 'cross':147,229 'cross-post':228 'decent':202 'detect':86,93,120 'devic':80 'drain':5 'ebik':45 'electron':209,219 'expect':153 'guess':143 'guy':200 'high':89,117 'higher':132 'hook':77,109,135,187 'increas':172 'input':20,40,50,65,97,139,195 'intern':181 'isn':145 'knowledg':207 'like':7,213 'lineup':34 'low':91,126,149,159,174 'm':142,197,215 'measur':121 'minim':206 'note':13 'one':62 'open':4 'order':155 'part':16,30 'pleas':211 'possibl':177 'post':230 'problem':41 'produc':81 'pull':24,69,104,168,183,190 'pull-down':189 'pull-up':23,68,103,167,182 'question':232 'rang':57 'regist':157 'resistor':26,72,106,170,185,192 'right':162 'side':118,127 'signal':55,82,84,112 'skill':204 'softwar':199 'solder':203 'solut':1 'squar':53 'stackexchang':234 'thank':224 'think':164 'threshold':150 'tree':223 'trick':12 'two':49 'use':2 'v':61 'voltag':123 'wave':54 'work':18,37"
  +cross: false
  +upVotes: 0
  +downVotes: 0
  +ranking: 1687130578
  +visibility: "visible             "
  +apId: "https://lemmy.ca/post/738378"
  +editedAt: DateTimeImmutable @1687363171 {#1853
    date: 2023-06-21 17:59:31.0 +02:00
  }
  +createdAt: DateTimeImmutable @1687102078 {#1850
    date: 2023-06-18 17:27:58.0 +02:00
  }
}
 
"Scheb\TwoFactorBundle\Security\Authorization\Voter\TwoFactorInProgressVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\EntryCommentVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\EntryVoter"
 ACCESS DENIED 
"App\Security\Voter\MagazineVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\MessageThreadVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\MessageVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\NotificationVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\OAuth2UserConsentVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\PostCommentVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\PostVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\UserVoter"
 ACCESS ABSTAIN
Show voter details
4 DENIED moderate 
App\Entity\Entry {#1817
  +user: Proxies\__CG__\App\Entity\User {#1901 …}
  +magazine: App\Entity\Magazine {#285
    +icon: Proxies\__CG__\App\Entity\Image {#265 …}
    +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 {#293
      date: 2024-10-20 10:40:08.0 +02:00
    }
    +markedForDeletionAt: null
    +tags: null
    +moderators: Doctrine\ORM\PersistentCollection {#256 …}
    +ownershipRequests: Doctrine\ORM\PersistentCollection {#252 …}
    +moderatorRequests: Doctrine\ORM\PersistentCollection {#241 …}
    +entries: Doctrine\ORM\PersistentCollection {#199 …}
    +posts: Doctrine\ORM\PersistentCollection {#157 …}
    +subscriptions: Doctrine\ORM\PersistentCollection {#219 …}
    +bans: Doctrine\ORM\PersistentCollection {#136 …}
    +reports: Doctrine\ORM\PersistentCollection {#122 …}
    +badges: Doctrine\ORM\PersistentCollection {#100 …}
    +logs: Doctrine\ORM\PersistentCollection {#90 …}
    +awards: Doctrine\ORM\PersistentCollection {#79 …}
    +categories: Doctrine\ORM\PersistentCollection {#66 …}
    -id: 11
    +apId: "askelectronics@discuss.tchncs.de"
    +apProfileId: "https://discuss.tchncs.de/c/askelectronics"
    +apPublicUrl: "https://discuss.tchncs.de/c/askelectronics"
    +apFollowersUrl: "https://discuss.tchncs.de/c/askelectronics/followers"
    +apInboxUrl: "https://discuss.tchncs.de/inbox"
    +apDomain: "discuss.tchncs.de"
    +apPreferredUsername: "askelectronics"
    +apDiscoverable: true
    +apManuallyApprovesFollowers: null
    +privateKey: null
    +publicKey: null
    +apFetchedAt: DateTime @1727247714 {#296
      date: 2024-09-25 09:01:54.0 +02:00
    }
    +apDeletedAt: null
    +apTimeoutAt: null
    +visibility: "visible             "
    +createdAt: DateTimeImmutable @1687144409 {#299
      date: 2023-06-19 05:13:29.0 +02:00
    }
  }
  +image: Proxies\__CG__\App\Entity\Image {#1895 …}
  +domain: Proxies\__CG__\App\Entity\Domain {#1879 …}
  +slug: "SOLVED-A-pull-up-resistor-increases-the-low-side-of-a"
  +title: "[SOLVED] A pull-up resistor increases the low side of a signal, how can I counteract it?"
  +url: "https://electronics.stackexchange.com/q/670924/107963"
  +body: """
    Solution\n
    --------\n
    \n
    Using an open drain buffer like the `74LVC1G07` did the trick. Note that this part only works for inputs with a pull-up resistor. There are other parts from the same lineup that can work with any input.\n
    \n
    Problem\n
    -------\n
    \n
    > I have an ebike computer that has two inputs that accept square wave signals. The range is 0-5V. One of the inputs has no pull-up/down resistors on it. When I hook up a device producing signal, the signal is detected correctly. Both highs and lows are detected correctly. The other input has a built-in pull-up resistor. When I hook the same signal to it, only the high side is detected. Measuring the voltage of the low side, it's a bit higher than when hooked to the other input and I'm guessing it isn't crossing the low threshold the computer expects in order to register the low.\n
    \n
    > Am I right in thinking that the pull-up resistor is increasing the lows?\n
    \n
    > Is it possible to counteract the internal pull-up resistor by hooking a pull-down resistor to the input?\n
    \n
    > I'm a software guy with decent soldering skills and minimal knowledge in electronics so please answer like I'm not the brightest electronic bulb on the tree.\n
    \n
    > Thank you in advance!\n
    \n
    Cross-posting my question from StackExchange.
    """
  +type: "link"
  +lang: "en"
  +isOc: false
  +hasEmbed: false
  +commentCount: 6
  +favouriteCount: 3
  +score: 0
  +isAdult: false
  +sticky: false
  +lastActive: DateTime @1687328506 {#1360
    date: 2023-06-21 08:21:46.0 +02:00
  }
  +ip: null
  +adaAmount: 0
  +tags: null
  +mentions: null
  +comments: Doctrine\ORM\PersistentCollection {#1951 …}
  +votes: Doctrine\ORM\PersistentCollection {#1395 …}
  +reports: Doctrine\ORM\PersistentCollection {#2400 …}
  +favourites: Doctrine\ORM\PersistentCollection {#1890 …}
  +notifications: Doctrine\ORM\PersistentCollection {#1902 …}
  +badges: Doctrine\ORM\PersistentCollection {#1891 …}
  +children: []
  -id: 132
  -titleTs: "'counteract':17 'increas':7 'low':9 'pull':4 'pull-up':3 'resistor':6 'side':10 'signal':13 'solv':1"
  -bodyTs: "'-5':60 '/down':71 '0':59 '74lvc1g07':9 'accept':52 'advanc':227 'answer':212 'bit':131 'brightest':218 'buffer':6 'built':101 'built-in':100 'bulb':220 'comput':46,152 'correct':87,94 'counteract':179 'cross':147,229 'cross-post':228 'decent':202 'detect':86,93,120 'devic':80 'drain':5 'ebik':45 'electron':209,219 'expect':153 'guess':143 'guy':200 'high':89,117 'higher':132 'hook':77,109,135,187 'increas':172 'input':20,40,50,65,97,139,195 'intern':181 'isn':145 'knowledg':207 'like':7,213 'lineup':34 'low':91,126,149,159,174 'm':142,197,215 'measur':121 'minim':206 'note':13 'one':62 'open':4 'order':155 'part':16,30 'pleas':211 'possibl':177 'post':230 'problem':41 'produc':81 'pull':24,69,104,168,183,190 'pull-down':189 'pull-up':23,68,103,167,182 'question':232 'rang':57 'regist':157 'resistor':26,72,106,170,185,192 'right':162 'side':118,127 'signal':55,82,84,112 'skill':204 'softwar':199 'solder':203 'solut':1 'squar':53 'stackexchang':234 'thank':224 'think':164 'threshold':150 'tree':223 'trick':12 'two':49 'use':2 'v':61 'voltag':123 'wave':54 'work':18,37"
  +cross: false
  +upVotes: 0
  +downVotes: 0
  +ranking: 1687130578
  +visibility: "visible             "
  +apId: "https://lemmy.ca/post/738378"
  +editedAt: DateTimeImmutable @1687363171 {#1853
    date: 2023-06-21 17:59:31.0 +02:00
  }
  +createdAt: DateTimeImmutable @1687102078 {#1850
    date: 2023-06-18 17:27:58.0 +02:00
  }
}
 
"Scheb\TwoFactorBundle\Security\Authorization\Voter\TwoFactorInProgressVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\EntryCommentVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\EntryVoter"
 ACCESS DENIED 
"App\Security\Voter\MagazineVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\MessageThreadVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\MessageVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\NotificationVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\OAuth2UserConsentVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\PostCommentVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\PostVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\UserVoter"
 ACCESS ABSTAIN
Show voter details
5 DENIED edit 
App\Entity\Magazine {#285
  +icon: Proxies\__CG__\App\Entity\Image {#265 …}
  +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 {#293
    date: 2024-10-20 10:40:08.0 +02:00
  }
  +markedForDeletionAt: null
  +tags: null
  +moderators: Doctrine\ORM\PersistentCollection {#256 …}
  +ownershipRequests: Doctrine\ORM\PersistentCollection {#252 …}
  +moderatorRequests: Doctrine\ORM\PersistentCollection {#241 …}
  +entries: Doctrine\ORM\PersistentCollection {#199 …}
  +posts: Doctrine\ORM\PersistentCollection {#157 …}
  +subscriptions: Doctrine\ORM\PersistentCollection {#219 …}
  +bans: Doctrine\ORM\PersistentCollection {#136 …}
  +reports: Doctrine\ORM\PersistentCollection {#122 …}
  +badges: Doctrine\ORM\PersistentCollection {#100 …}
  +logs: Doctrine\ORM\PersistentCollection {#90 …}
  +awards: Doctrine\ORM\PersistentCollection {#79 …}
  +categories: Doctrine\ORM\PersistentCollection {#66 …}
  -id: 11
  +apId: "askelectronics@discuss.tchncs.de"
  +apProfileId: "https://discuss.tchncs.de/c/askelectronics"
  +apPublicUrl: "https://discuss.tchncs.de/c/askelectronics"
  +apFollowersUrl: "https://discuss.tchncs.de/c/askelectronics/followers"
  +apInboxUrl: "https://discuss.tchncs.de/inbox"
  +apDomain: "discuss.tchncs.de"
  +apPreferredUsername: "askelectronics"
  +apDiscoverable: true
  +apManuallyApprovesFollowers: null
  +privateKey: null
  +publicKey: null
  +apFetchedAt: DateTime @1727247714 {#296
    date: 2024-09-25 09:01:54.0 +02:00
  }
  +apDeletedAt: null
  +apTimeoutAt: null
  +visibility: "visible             "
  +createdAt: DateTimeImmutable @1687144409 {#299
    date: 2023-06-19 05:13:29.0 +02:00
  }
}
 
"Scheb\TwoFactorBundle\Security\Authorization\Voter\TwoFactorInProgressVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\EntryCommentVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\EntryVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\MagazineVoter"
 ACCESS DENIED 
"App\Security\Voter\MessageThreadVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\MessageVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\NotificationVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\OAuth2UserConsentVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\PostCommentVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\PostVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\UserVoter"
 ACCESS ABSTAIN
Show voter details