GET https://kbin.spritesserver.nl/index.php/m/electronics@discuss.tchncs.de/t/2097/What-project-are-you-currently-working-on/comment/28061/votes/up

Response
200 OK
IP
216.73.216.88
Profiled on
Token
af2ec9

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 …}
}
 21.36 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
# 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\EntryComment {#1375
  +user: Proxies\__CG__\App\Entity\User {#1400 …}
  +entry: App\Entity\Entry {#2390 …}
  +magazine: App\Entity\Magazine {#308
    +icon: Proxies\__CG__\App\Entity\Image {#288 …}
    +name: "electronics@discuss.tchncs.de"
    +title: "electronics"
    +description: """
      **Projects, pictures, industry discussions and news about electronic engineering & component-level electronic circuits.**\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: No circuit design or repair, tools or component questions.\n
      \n
      5: No excessively promoting your own sites, social media, videos etc.\n
      \n
      ---\n
      \n
      *Ask questions in [discuss.tchncs.de/c/askelectronics](https://discuss.tchncs.de/c/askelectronics)*\n
      \n
      ---
      """
    +rules: null
    +subscriptionsCount: 1
    +entryCount: 43
    +entryCommentCount: 201
    +postCount: 1
    +postCommentCount: 3
    +isAdult: false
    +customCss: null
    +lastActive: DateTime @1723220252 {#321
      date: 2024-08-09 18:17:32.0 +02:00
    }
    +markedForDeletionAt: null
    +tags: null
    +moderators: Doctrine\ORM\PersistentCollection {#279 …}
    +ownershipRequests: Doctrine\ORM\PersistentCollection {#275 …}
    +moderatorRequests: Doctrine\ORM\PersistentCollection {#264 …}
    +entries: Doctrine\ORM\PersistentCollection {#222 …}
    +posts: Doctrine\ORM\PersistentCollection {#180 …}
    +subscriptions: Doctrine\ORM\PersistentCollection {#242 …}
    +bans: Doctrine\ORM\PersistentCollection {#159 …}
    +reports: Doctrine\ORM\PersistentCollection {#145 …}
    +badges: Doctrine\ORM\PersistentCollection {#123 …}
    +logs: Doctrine\ORM\PersistentCollection {#113 …}
    +awards: Doctrine\ORM\PersistentCollection {#102 …}
    +categories: Doctrine\ORM\PersistentCollection {#89 …}
    -id: 5
    +apId: "electronics@discuss.tchncs.de"
    +apProfileId: "https://discuss.tchncs.de/c/electronics"
    +apPublicUrl: "https://discuss.tchncs.de/c/electronics"
    +apFollowersUrl: "https://discuss.tchncs.de/c/electronics/followers"
    +apInboxUrl: "https://discuss.tchncs.de/inbox"
    +apDomain: "discuss.tchncs.de"
    +apPreferredUsername: "electronics"
    +apDiscoverable: true
    +apManuallyApprovesFollowers: null
    +privateKey: null
    +publicKey: null
    +apFetchedAt: DateTime @1719675646 {#324
      date: 2024-06-29 17:40:46.0 +02:00
    }
    +apDeletedAt: null
    +apTimeoutAt: null
    +visibility: "visible             "
    +createdAt: DateTimeImmutable @1686642591 {#320
      date: 2023-06-13 09:49:51.0 +02:00
    }
  }
  +image: null
  +parent: null
  +root: null
  +body: """
    An MPPT solar charge controller using Arduino as well as a homemade Li-Ion battery. Also an 18650 battery tester. So 3 projects simultaneously because they’re closely related.\n
    \n
    I’m using a CC CV boost converter to convert solar energy to the voltage for a 7s Li-Ion battery. The arduino reads voltage and current and will try to adjust the CC value to obtain an optimal wattage. I have removed the CC potentiometer and replaced that with an Arduino PWM pin with voltage divider that sets the corresponding current limit. This way a relation between CC pwm duty cycle and solar output can be set.\n
    \n
    DIY Li-Ion battery goes hand in hand with the solar project. I’m making a home battery out of salvaged laptop batteries. That requires a battery tester as well which I’m also making myself. The battery tester works by charging a battery with a TP4056 module and discharging as soon as it’s fully charged over a resistor while monitoring voltage/current over time. This happens 16x in parallel using multiplexers so 16 batteries can be tested simultaneously.\n
    \n
    I’m also taking safety very seriously so all batteries are equipped with both thermal fuses and current fuses. That involves 3D modelling battery holders, printing them, spot welding/soldering etc. As well as an additional monitoring system on top of a commercial BMS so that the battery status can be monitored remotely. I intend to have a smoke detector, thermostats and an emergency cutoff switch controlled by that second BMS.\n
    \n
    Once everything works to a somewhat satisfying degree I intend to post the projects in more detail.\n
    \n
    Every project tends to explode in scope in terms of what it all requires so I’m not making as much progress as I want but it has been very educational.
    """
  +lang: "en"
  +isAdult: false
  +favouriteCount: 4
  +score: 0
  +lastActive: DateTime @1693902642 {#1842
    date: 2023-09-05 10:30:42.0 +02:00
  }
  +ip: null
  +tags: null
  +mentions: [
    "@Charliebeans@slrpnk.net"
  ]
  +children: Doctrine\ORM\PersistentCollection {#1367 …}
  +nested: Doctrine\ORM\PersistentCollection {#1898 …}
  +votes: Doctrine\ORM\PersistentCollection {#2432 …}
  +reports: Doctrine\ORM\PersistentCollection {#1848 …}
  +favourites: Doctrine\ORM\PersistentCollection {#2490 …}
  +notifications: Doctrine\ORM\PersistentCollection {#2409 …}
  -id: 28061
  -bodyTs: "'16':184 '16x':178 '18650':19 '3':23 '3d':211 '7s':48 'addit':224 'adjust':63 'also':17,144,192 'arduino':7,54,83 'batteri':16,20,52,114,128,133,137,148,154,185,199,213,236 'bms':232,259 'boost':37 'cc':35,65,76,100 'charg':4,152,167 'close':29 'commerci':231 'control':5,255 'convert':38,40 'correspond':92 'current':58,93,207 'cutoff':253 'cv':36 'cycl':103 'degre':267 'detail':276 'detector':248 'discharg':160 'divid':88 'diy':110 'duti':102 'educ':307 'emerg':252 'energi':42 'equip':201 'etc':219 'everi':277 'everyth':261 'explod':281 'fulli':166 'fuse':205,208 'goe':115 'hand':116,118 'happen':177 'holder':214 'home':127 'homemad':12 'intend':243,269 'involv':210 'ion':15,51,113 'laptop':132 'li':14,50,112 'li-ion':13,49,111 'limit':94 'm':32,124,143,191,293 'make':125,145,295 'model':212 'modul':158 'monitor':172,225,240 'mppt':2 'much':297 'multiplex':182 'obtain':68 'optim':70 'output':106 'parallel':180 'pin':85 'post':271 'potentiomet':77 'print':215 'progress':298 'project':24,122,273,278 'pwm':84,101 're':28 'read':55 'relat':30,98 'remot':241 'remov':74 'replac':79 'requir':135,290 'resistor':170 'safeti':194 'salvag':131 'satisfi':266 'scope':283 'second':258 'serious':196 'set':90,109 'simultan':25,189 'smoke':247 'solar':3,41,105,121 'somewhat':265 'soon':162 'spot':217 'status':237 'switch':254 'system':226 'take':193 'tend':279 'term':285 'test':188 'tester':21,138,149 'thermal':204 'thermostat':249 'time':175 'top':228 'tp4056':157 'tri':61 'use':6,33,181 'valu':66 'voltag':45,56,87 'voltage/current':173 'want':301 'wattag':71 'way':96 'welding/soldering':218 'well':9,140,221 'work':150,262"
  +ranking: 0
  +commentCount: 0
  +upVotes: 0
  +downVotes: 0
  +visibility: "visible             "
  +apId: "https://discuss.tchncs.de/comment/2684955"
  +editedAt: DateTimeImmutable @1693903486 {#1971
    date: 2023-09-05 10:44:46.0 +02:00
  }
  +createdAt: DateTimeImmutable @1693902642 {#1366
    date: 2023-09-05 10:30:42.0 +02:00
  }
}
 
"Scheb\TwoFactorBundle\Security\Authorization\Voter\TwoFactorInProgressVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\EntryCommentVoter"
 ACCESS DENIED 
"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
3 DENIED edit 
App\Entity\EntryComment {#1375
  +user: Proxies\__CG__\App\Entity\User {#1400 …}
  +entry: App\Entity\Entry {#2390 …}
  +magazine: App\Entity\Magazine {#308
    +icon: Proxies\__CG__\App\Entity\Image {#288 …}
    +name: "electronics@discuss.tchncs.de"
    +title: "electronics"
    +description: """
      **Projects, pictures, industry discussions and news about electronic engineering & component-level electronic circuits.**\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: No circuit design or repair, tools or component questions.\n
      \n
      5: No excessively promoting your own sites, social media, videos etc.\n
      \n
      ---\n
      \n
      *Ask questions in [discuss.tchncs.de/c/askelectronics](https://discuss.tchncs.de/c/askelectronics)*\n
      \n
      ---
      """
    +rules: null
    +subscriptionsCount: 1
    +entryCount: 43
    +entryCommentCount: 201
    +postCount: 1
    +postCommentCount: 3
    +isAdult: false
    +customCss: null
    +lastActive: DateTime @1723220252 {#321
      date: 2024-08-09 18:17:32.0 +02:00
    }
    +markedForDeletionAt: null
    +tags: null
    +moderators: Doctrine\ORM\PersistentCollection {#279 …}
    +ownershipRequests: Doctrine\ORM\PersistentCollection {#275 …}
    +moderatorRequests: Doctrine\ORM\PersistentCollection {#264 …}
    +entries: Doctrine\ORM\PersistentCollection {#222 …}
    +posts: Doctrine\ORM\PersistentCollection {#180 …}
    +subscriptions: Doctrine\ORM\PersistentCollection {#242 …}
    +bans: Doctrine\ORM\PersistentCollection {#159 …}
    +reports: Doctrine\ORM\PersistentCollection {#145 …}
    +badges: Doctrine\ORM\PersistentCollection {#123 …}
    +logs: Doctrine\ORM\PersistentCollection {#113 …}
    +awards: Doctrine\ORM\PersistentCollection {#102 …}
    +categories: Doctrine\ORM\PersistentCollection {#89 …}
    -id: 5
    +apId: "electronics@discuss.tchncs.de"
    +apProfileId: "https://discuss.tchncs.de/c/electronics"
    +apPublicUrl: "https://discuss.tchncs.de/c/electronics"
    +apFollowersUrl: "https://discuss.tchncs.de/c/electronics/followers"
    +apInboxUrl: "https://discuss.tchncs.de/inbox"
    +apDomain: "discuss.tchncs.de"
    +apPreferredUsername: "electronics"
    +apDiscoverable: true
    +apManuallyApprovesFollowers: null
    +privateKey: null
    +publicKey: null
    +apFetchedAt: DateTime @1719675646 {#324
      date: 2024-06-29 17:40:46.0 +02:00
    }
    +apDeletedAt: null
    +apTimeoutAt: null
    +visibility: "visible             "
    +createdAt: DateTimeImmutable @1686642591 {#320
      date: 2023-06-13 09:49:51.0 +02:00
    }
  }
  +image: null
  +parent: null
  +root: null
  +body: """
    An MPPT solar charge controller using Arduino as well as a homemade Li-Ion battery. Also an 18650 battery tester. So 3 projects simultaneously because they’re closely related.\n
    \n
    I’m using a CC CV boost converter to convert solar energy to the voltage for a 7s Li-Ion battery. The arduino reads voltage and current and will try to adjust the CC value to obtain an optimal wattage. I have removed the CC potentiometer and replaced that with an Arduino PWM pin with voltage divider that sets the corresponding current limit. This way a relation between CC pwm duty cycle and solar output can be set.\n
    \n
    DIY Li-Ion battery goes hand in hand with the solar project. I’m making a home battery out of salvaged laptop batteries. That requires a battery tester as well which I’m also making myself. The battery tester works by charging a battery with a TP4056 module and discharging as soon as it’s fully charged over a resistor while monitoring voltage/current over time. This happens 16x in parallel using multiplexers so 16 batteries can be tested simultaneously.\n
    \n
    I’m also taking safety very seriously so all batteries are equipped with both thermal fuses and current fuses. That involves 3D modelling battery holders, printing them, spot welding/soldering etc. As well as an additional monitoring system on top of a commercial BMS so that the battery status can be monitored remotely. I intend to have a smoke detector, thermostats and an emergency cutoff switch controlled by that second BMS.\n
    \n
    Once everything works to a somewhat satisfying degree I intend to post the projects in more detail.\n
    \n
    Every project tends to explode in scope in terms of what it all requires so I’m not making as much progress as I want but it has been very educational.
    """
  +lang: "en"
  +isAdult: false
  +favouriteCount: 4
  +score: 0
  +lastActive: DateTime @1693902642 {#1842
    date: 2023-09-05 10:30:42.0 +02:00
  }
  +ip: null
  +tags: null
  +mentions: [
    "@Charliebeans@slrpnk.net"
  ]
  +children: Doctrine\ORM\PersistentCollection {#1367 …}
  +nested: Doctrine\ORM\PersistentCollection {#1898 …}
  +votes: Doctrine\ORM\PersistentCollection {#2432 …}
  +reports: Doctrine\ORM\PersistentCollection {#1848 …}
  +favourites: Doctrine\ORM\PersistentCollection {#2490 …}
  +notifications: Doctrine\ORM\PersistentCollection {#2409 …}
  -id: 28061
  -bodyTs: "'16':184 '16x':178 '18650':19 '3':23 '3d':211 '7s':48 'addit':224 'adjust':63 'also':17,144,192 'arduino':7,54,83 'batteri':16,20,52,114,128,133,137,148,154,185,199,213,236 'bms':232,259 'boost':37 'cc':35,65,76,100 'charg':4,152,167 'close':29 'commerci':231 'control':5,255 'convert':38,40 'correspond':92 'current':58,93,207 'cutoff':253 'cv':36 'cycl':103 'degre':267 'detail':276 'detector':248 'discharg':160 'divid':88 'diy':110 'duti':102 'educ':307 'emerg':252 'energi':42 'equip':201 'etc':219 'everi':277 'everyth':261 'explod':281 'fulli':166 'fuse':205,208 'goe':115 'hand':116,118 'happen':177 'holder':214 'home':127 'homemad':12 'intend':243,269 'involv':210 'ion':15,51,113 'laptop':132 'li':14,50,112 'li-ion':13,49,111 'limit':94 'm':32,124,143,191,293 'make':125,145,295 'model':212 'modul':158 'monitor':172,225,240 'mppt':2 'much':297 'multiplex':182 'obtain':68 'optim':70 'output':106 'parallel':180 'pin':85 'post':271 'potentiomet':77 'print':215 'progress':298 'project':24,122,273,278 'pwm':84,101 're':28 'read':55 'relat':30,98 'remot':241 'remov':74 'replac':79 'requir':135,290 'resistor':170 'safeti':194 'salvag':131 'satisfi':266 'scope':283 'second':258 'serious':196 'set':90,109 'simultan':25,189 'smoke':247 'solar':3,41,105,121 'somewhat':265 'soon':162 'spot':217 'status':237 'switch':254 'system':226 'take':193 'tend':279 'term':285 'test':188 'tester':21,138,149 'thermal':204 'thermostat':249 'time':175 'top':228 'tp4056':157 'tri':61 'use':6,33,181 'valu':66 'voltag':45,56,87 'voltage/current':173 'want':301 'wattag':71 'way':96 'welding/soldering':218 'well':9,140,221 'work':150,262"
  +ranking: 0
  +commentCount: 0
  +upVotes: 0
  +downVotes: 0
  +visibility: "visible             "
  +apId: "https://discuss.tchncs.de/comment/2684955"
  +editedAt: DateTimeImmutable @1693903486 {#1971
    date: 2023-09-05 10:44:46.0 +02:00
  }
  +createdAt: DateTimeImmutable @1693902642 {#1366
    date: 2023-09-05 10:30:42.0 +02:00
  }
}
 
"Scheb\TwoFactorBundle\Security\Authorization\Voter\TwoFactorInProgressVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\EntryCommentVoter"
 ACCESS DENIED 
"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
4 DENIED moderate 
App\Entity\EntryComment {#1375
  +user: Proxies\__CG__\App\Entity\User {#1400 …}
  +entry: App\Entity\Entry {#2390 …}
  +magazine: App\Entity\Magazine {#308
    +icon: Proxies\__CG__\App\Entity\Image {#288 …}
    +name: "electronics@discuss.tchncs.de"
    +title: "electronics"
    +description: """
      **Projects, pictures, industry discussions and news about electronic engineering & component-level electronic circuits.**\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: No circuit design or repair, tools or component questions.\n
      \n
      5: No excessively promoting your own sites, social media, videos etc.\n
      \n
      ---\n
      \n
      *Ask questions in [discuss.tchncs.de/c/askelectronics](https://discuss.tchncs.de/c/askelectronics)*\n
      \n
      ---
      """
    +rules: null
    +subscriptionsCount: 1
    +entryCount: 43
    +entryCommentCount: 201
    +postCount: 1
    +postCommentCount: 3
    +isAdult: false
    +customCss: null
    +lastActive: DateTime @1723220252 {#321
      date: 2024-08-09 18:17:32.0 +02:00
    }
    +markedForDeletionAt: null
    +tags: null
    +moderators: Doctrine\ORM\PersistentCollection {#279 …}
    +ownershipRequests: Doctrine\ORM\PersistentCollection {#275 …}
    +moderatorRequests: Doctrine\ORM\PersistentCollection {#264 …}
    +entries: Doctrine\ORM\PersistentCollection {#222 …}
    +posts: Doctrine\ORM\PersistentCollection {#180 …}
    +subscriptions: Doctrine\ORM\PersistentCollection {#242 …}
    +bans: Doctrine\ORM\PersistentCollection {#159 …}
    +reports: Doctrine\ORM\PersistentCollection {#145 …}
    +badges: Doctrine\ORM\PersistentCollection {#123 …}
    +logs: Doctrine\ORM\PersistentCollection {#113 …}
    +awards: Doctrine\ORM\PersistentCollection {#102 …}
    +categories: Doctrine\ORM\PersistentCollection {#89 …}
    -id: 5
    +apId: "electronics@discuss.tchncs.de"
    +apProfileId: "https://discuss.tchncs.de/c/electronics"
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    An MPPT solar charge controller using Arduino as well as a homemade Li-Ion battery. Also an 18650 battery tester. So 3 projects simultaneously because they’re closely related.\n
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    I’m using a CC CV boost converter to convert solar energy to the voltage for a 7s Li-Ion battery. The arduino reads voltage and current and will try to adjust the CC value to obtain an optimal wattage. I have removed the CC potentiometer and replaced that with an Arduino PWM pin with voltage divider that sets the corresponding current limit. This way a relation between CC pwm duty cycle and solar output can be set.\n
    \n
    DIY Li-Ion battery goes hand in hand with the solar project. I’m making a home battery out of salvaged laptop batteries. That requires a battery tester as well which I’m also making myself. The battery tester works by charging a battery with a TP4056 module and discharging as soon as it’s fully charged over a resistor while monitoring voltage/current over time. This happens 16x in parallel using multiplexers so 16 batteries can be tested simultaneously.\n
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    I’m also taking safety very seriously so all batteries are equipped with both thermal fuses and current fuses. That involves 3D modelling battery holders, printing them, spot welding/soldering etc. As well as an additional monitoring system on top of a commercial BMS so that the battery status can be monitored remotely. I intend to have a smoke detector, thermostats and an emergency cutoff switch controlled by that second BMS.\n
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    Once everything works to a somewhat satisfying degree I intend to post the projects in more detail.\n
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    Every project tends to explode in scope in terms of what it all requires so I’m not making as much progress as I want but it has been very educational.
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