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 …}}	0.25 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 …}`}	0.04 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 {#2388
  +user: Proxies\__CG__\App\Entity\User {#1943 …}
  +magazine: App\Entity\Magazine {#266
    +icon: Proxies\__CG__\App\Entity\Image {#247 …}
    +name: "electronics@discuss.tchncs.de"
    +title: "electronics"
    +description: """
      **Projects, pictures, industry discussions and news about electronic engineering &amp; 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
      ---
      """
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    +entryCommentCount: 201
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      date: 2024-08-09 18:17:32.0 +02:00
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      date: 2024-06-29 17:40:46.0 +02:00
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      date: 2023-06-13 09:49:51.0 +02:00
    }
  }
  +image: Proxies\__CG__\App\Entity\Image {#1962 …}
  +domain: Proxies\__CG__\App\Entity\Domain {#1924 …}
  +slug: "Got-my-electric-cooler-box-working-again"
  +title: "Got my electric cooler box working again 😁"
  +url: "https://images2.imgbox.com/21/88/WZnJo5ol_o.jpg"
  +body: """
    This decade old electric cooler box gave up the ghost around 2 years ago, with the indoor outlet plug no longer working. The independent 12v input was still operational, so I kept it with the intention of *eventually* fixing it…\n
    \n
    And two years later, this is the eventually 😅. The integrated 10v ~45w unit had failed short on the primary side, with a burnt out Y-capacitor and some fried zeners. I started removing bits from the board to try and find all the broken components… but ended up letting out the magic smoke in the process, oops!\n
    \n
    I set out looking for a new power supply, and came across a 12v 45w unit from Meanwell. It was actually smaller than the cooler’s original power supply too, meaning more internal space to use later 🤫\n
    \n
    Spoiler![](https://images2.imgbox.com/33/21/KOCyFNev_o.jpg)\n
    \n
    After searching for a distributor that was actually willing to ship it to a home address, I ordered, and boom:\n
    \n
    ![](https://images2.imgbox.com/30/b9/Kz44bQkP_o.jpg)\n
    \n
    It’s so tiny compared to the original.\n
    \n
    Next I installed an Arduino Nano to control the TEC/peltier module &amp; fan via a cheap LED repeater. I was hoping to reuse the internal temperature sensors, but left them disconnected for now\n
    \n
    ![](https://images2.imgbox.com/9b/91/2KuktXIr_o.jpg)\n
    \n
    After hours writing the arduino code, I finally got it into a usable state. There were issues with brownouts rebooting the Arduino, however with the Meanwell supply in-circuit those mysteriously stopped.\n
    \n
    There are 3 power modes now for the module: 30W, 40W and 50W - with the first two using PWM, and the last one giving it all the beans. I wanted to PWM control the fan too, but decided against it since it sounded absolutely terrible at whatever PWM frequency the Nano is using.\n
    \n
    It powers on to 40W by default, which is under the 45W max rating of the PSU.\n
    \n
    Everything looks good so far running from the bench supply:\n
    \n
    ![](https://images2.imgbox.com/bc/75/tXk3hDZw_o.jpg)\n
    \n
    Now all that was left was to connect the internal supply, and the 12v vehicle input. I was actually supposed to use JST connectors for the Meanwell psu, but didn’t have anything on hand - so improvised with crimping spade terminals and friction fitting those on\n
    \n
    ![](https://images2.imgbox.com/90/35/YpnoC4SN_o.jpg)\n
    \n
    And the moment of truth. Up until this point I hadn’t actually checked if the replacement psu was working or not\n
    \n
    ![](https://images2.imgbox.com/ed/6a/kmJ4WqvX_o.jpg)\n
    \n
    Looking good! I don’t really like the LEDs though, so might do something about those in future.\n
    \n
    You might be wondering how exactly I change the power settings… well since the manufacturer decided it was good enough to shove all the cables in the back, I did the same with a pushbutton 🤫\n
    \n
    ![](https://images2.imgbox.com/d8/8a/Np4X8Wjl_o.jpg)\n
    \n
    Glad to have the electric cooler working again though, feels nice to save large things like this from going to the landfill and extend their life a bit. Excited to hear any thoughts and feedback!
    """
  +type: "image"
  +lang: "en"
  +isOc: false
  +hasEmbed: true
  +commentCount: 5
  +favouriteCount: 38
  +score: 0
  +isAdult: false
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  +lastActive: DateTime @1701252666 {#2410
    date: 2023-11-29 11:11:06.0 +01:00
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  +votes: Doctrine\ORM\PersistentCollection {#1973 …}
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  -id: 15482
  -titleTs: "'box':5 'cooler':4 'electr':3 'got':1 'work':6"
  -bodyTs: "'/30/b9/kz44bqkp_o.jpg)':162 '/33/21/kocyfnev_o.jpg)':139 '/90/35/ypnoc4sn_o.jpg)':370 '/9b/91/2kuktxir_o.jpg)':205 '/bc/75/txk3hdzw_o.jpg)':321 '/d8/8a/np4x8wjl_o.jpg)':451 '/ed/6a/kmj4wqvx_o.jpg)':395 '10v':51 '12v':25,112,335 '2':12 '3':241 '30w':248 '40w':249,296 '45w':52,113,303 '50w':251 'absolut':282 'across':110 'actual':119,147,340,383 'address':155 'ago':14 'anyth':354 'arduino':175,210,227 'around':11 'back':441 'bean':266 'bench':317 'bit':75,479 'board':78 'boom':159 'box':6 'broken':85 'brownout':224 'burnt':63 'cabl':438 'came':109 'capacitor':67 'chang':421 'cheap':185 'check':384 'circuit':235 'code':211 'compar':167 'compon':86 'connect':329 'connector':345 'control':178,271 'cooler':5,123,457 'crimp':360 'decad':2 'decid':276,429 'default':298 'didn':351 'disconnect':200 'distributor':144 'electr':4,456 'end':88 'enough':433 'eventu':38,48 'everyth':309 'exact':419 'excit':480 'extend':475 'fail':55 'fan':182,273 'far':313 'feedback':486 'feel':461 'final':213 'find':82 'first':254 'fit':365 'fix':39 'frequenc':287 'fri':70 'friction':364 'futur':413 'gave':7 'ghost':10 'give':262 'glad':452 'go':470 'good':311,397,432 'got':214 'hadn':381 'hand':356 'hear':482 'home':154 'hope':190 'hour':207 'howev':228 'images2.imgbox.com':138,161,204,320,369,394,450 'images2.imgbox.com/30/b9/kz44bqkp_o.jpg)':160 'images2.imgbox.com/33/21/kocyfnev_o.jpg)':137 'images2.imgbox.com/90/35/ypnoc4sn_o.jpg)':368 'images2.imgbox.com/9b/91/2kuktxir_o.jpg)':203 'images2.imgbox.com/bc/75/txk3hdzw_o.jpg)':319 'images2.imgbox.com/d8/8a/np4x8wjl_o.jpg)':449 'images2.imgbox.com/ed/6a/kmj4wqvx_o.jpg)':393 'improvis':358 'in-circuit':233 'independ':24 'indoor':17 'input':26,337 'instal':173 'integr':50 'intent':36 'intern':131,194,331 'issu':222 'jst':344 'kept':32 'landfil':473 'larg':465 'last':260 'later':44,135 'led':186,404 'left':198,326 'let':90 'life':477 'like':402,467 'longer':21 'look':102,310,396 'magic':93 'manufactur':428 'max':304 'mean':129 'meanwel':116,231,348 'might':407,415 'mode':243 'modul':181,247 'moment':373 'mysteri':237 'nano':176,289 'new':105 'next':171 'nice':462 'old':3 'one':261 'oop':98 'oper':29 'order':157 'origin':125,170 'outlet':18 'plug':19 'point':379 'power':106,126,242,293,423 'primari':59 'process':97 'psu':308,349,388 'pushbutton':448 'pwm':257,270,286 'rate':305 'realli':401 'reboot':225 'remov':74 'repeat':187 'replac':387 'reus':192 'run':314 'save':464 'search':141 'sensor':196 'set':100,424 'ship':150 'short':56 'shove':435 'side':60 'sinc':279,426 'smaller':120 'smoke':94 'someth':409 'sound':281 'space':132 'spade':361 'spoiler':136 'start':73 'state':219 'still':28 'stop':238 'suppli':107,127,232,318,332 'suppos':341 'tec/peltier':180 'temperatur':195 'termin':362 'terribl':283 'thing':466 'though':405,460 'thought':484 'tini':166 'tri':80 'truth':375 'two':42,255 'unit':53,114 'usabl':218 'use':134,256,291,343 'vehicl':336 'via':183 'want':268 'well':425 'whatev':285 'will':148 'wonder':417 'work':22,390,458 'write':208 'y':66 'y-capacitor':65 'year':13,43 'zener':71"
  +cross: false
  +upVotes: 0
  +downVotes: 0
  +ranking: 1700753560
  +visibility: "visible             "
  +apId: "https://lemmy.one/post/7096271"
  +editedAt: null
  +createdAt: DateTimeImmutable @1700667160 {#1850
    date: 2023-11-22 16:32:40.0 +01:00
  }
}
"App\Security\Voter\UserVoter"
App\Entity\Entry {#2388
  +user: Proxies\__CG__\App\Entity\User {#1943 …}
  +magazine: App\Entity\Magazine {#266
    +icon: Proxies\__CG__\App\Entity\Image {#247 …}
    +name: "electronics@discuss.tchncs.de"
    +title: "electronics"
    +description: """
      **Projects, pictures, industry discussions and news about electronic engineering &amp; 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 {#276
      date: 2024-08-09 18:17:32.0 +02:00
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    +markedForDeletionAt: null
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      date: 2023-06-13 09:49:51.0 +02:00
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  }
  +image: Proxies\__CG__\App\Entity\Image {#1962 …}
  +domain: Proxies\__CG__\App\Entity\Domain {#1924 …}
  +slug: "Got-my-electric-cooler-box-working-again"
  +title: "Got my electric cooler box working again 😁"
  +url: "https://images2.imgbox.com/21/88/WZnJo5ol_o.jpg"
  +body: """
    This decade old electric cooler box gave up the ghost around 2 years ago, with the indoor outlet plug no longer working. The independent 12v input was still operational, so I kept it with the intention of *eventually* fixing it…\n
    \n
    And two years later, this is the eventually 😅. The integrated 10v ~45w unit had failed short on the primary side, with a burnt out Y-capacitor and some fried zeners. I started removing bits from the board to try and find all the broken components… but ended up letting out the magic smoke in the process, oops!\n
    \n
    I set out looking for a new power supply, and came across a 12v 45w unit from Meanwell. It was actually smaller than the cooler’s original power supply too, meaning more internal space to use later 🤫\n
    \n
    Spoiler![](https://images2.imgbox.com/33/21/KOCyFNev_o.jpg)\n
    \n
    After searching for a distributor that was actually willing to ship it to a home address, I ordered, and boom:\n
    \n
    ![](https://images2.imgbox.com/30/b9/Kz44bQkP_o.jpg)\n
    \n
    It’s so tiny compared to the original.\n
    \n
    Next I installed an Arduino Nano to control the TEC/peltier module &amp; fan via a cheap LED repeater. I was hoping to reuse the internal temperature sensors, but left them disconnected for now\n
    \n
    ![](https://images2.imgbox.com/9b/91/2KuktXIr_o.jpg)\n
    \n
    After hours writing the arduino code, I finally got it into a usable state. There were issues with brownouts rebooting the Arduino, however with the Meanwell supply in-circuit those mysteriously stopped.\n
    \n
    There are 3 power modes now for the module: 30W, 40W and 50W - with the first two using PWM, and the last one giving it all the beans. I wanted to PWM control the fan too, but decided against it since it sounded absolutely terrible at whatever PWM frequency the Nano is using.\n
    \n
    It powers on to 40W by default, which is under the 45W max rating of the PSU.\n
    \n
    Everything looks good so far running from the bench supply:\n
    \n
    ![](https://images2.imgbox.com/bc/75/tXk3hDZw_o.jpg)\n
    \n
    Now all that was left was to connect the internal supply, and the 12v vehicle input. I was actually supposed to use JST connectors for the Meanwell psu, but didn’t have anything on hand - so improvised with crimping spade terminals and friction fitting those on\n
    \n
    ![](https://images2.imgbox.com/90/35/YpnoC4SN_o.jpg)\n
    \n
    And the moment of truth. Up until this point I hadn’t actually checked if the replacement psu was working or not\n
    \n
    ![](https://images2.imgbox.com/ed/6a/kmJ4WqvX_o.jpg)\n
    \n
    Looking good! I don’t really like the LEDs though, so might do something about those in future.\n
    \n
    You might be wondering how exactly I change the power settings… well since the manufacturer decided it was good enough to shove all the cables in the back, I did the same with a pushbutton 🤫\n
    \n
    ![](https://images2.imgbox.com/d8/8a/Np4X8Wjl_o.jpg)\n
    \n
    Glad to have the electric cooler working again though, feels nice to save large things like this from going to the landfill and extend their life a bit. Excited to hear any thoughts and feedback!
    """
  +type: "image"
  +lang: "en"
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    date: 2023-11-29 11:11:06.0 +01:00
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    This decade old electric cooler box gave up the ghost around 2 years ago, with the indoor outlet plug no longer working. The independent 12v input was still operational, so I kept it with the intention of *eventually* fixing it…\n
    \n
    And two years later, this is the eventually 😅. The integrated 10v ~45w unit had failed short on the primary side, with a burnt out Y-capacitor and some fried zeners. I started removing bits from the board to try and find all the broken components… but ended up letting out the magic smoke in the process, oops!\n
    \n
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    \n
    Spoiler![](https://images2.imgbox.com/33/21/KOCyFNev_o.jpg)\n
    \n
    After searching for a distributor that was actually willing to ship it to a home address, I ordered, and boom:\n
    \n
    ![](https://images2.imgbox.com/30/b9/Kz44bQkP_o.jpg)\n
    \n
    It’s so tiny compared to the original.\n
    \n
    Next I installed an Arduino Nano to control the TEC/peltier module &amp; fan via a cheap LED repeater. I was hoping to reuse the internal temperature sensors, but left them disconnected for now\n
    \n
    ![](https://images2.imgbox.com/9b/91/2KuktXIr_o.jpg)\n
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    After hours writing the arduino code, I finally got it into a usable state. There were issues with brownouts rebooting the Arduino, however with the Meanwell supply in-circuit those mysteriously stopped.\n
    \n
    There are 3 power modes now for the module: 30W, 40W and 50W - with the first two using PWM, and the last one giving it all the beans. I wanted to PWM control the fan too, but decided against it since it sounded absolutely terrible at whatever PWM frequency the Nano is using.\n
    \n
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    \n
    Everything looks good so far running from the bench supply:\n
    \n
    ![](https://images2.imgbox.com/bc/75/tXk3hDZw_o.jpg)\n
    \n
    Now all that was left was to connect the internal supply, and the 12v vehicle input. I was actually supposed to use JST connectors for the Meanwell psu, but didn’t have anything on hand - so improvised with crimping spade terminals and friction fitting those on\n
    \n
    ![](https://images2.imgbox.com/90/35/YpnoC4SN_o.jpg)\n
    \n
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    \n
    ![](https://images2.imgbox.com/ed/6a/kmJ4WqvX_o.jpg)\n
    \n
    Looking good! I don’t really like the LEDs though, so might do something about those in future.\n
    \n
    You might be wondering how exactly I change the power settings… well since the manufacturer decided it was good enough to shove all the cables in the back, I did the same with a pushbutton 🤫\n
    \n
    ![](https://images2.imgbox.com/d8/8a/Np4X8Wjl_o.jpg)\n
    \n
    Glad to have the electric cooler working again though, feels nice to save large things like this from going to the landfill and extend their life a bit. Excited to hear any thoughts and feedback!
    """
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    +body: """
      This decade old electric cooler box gave up the ghost around 2 years ago, with the indoor outlet plug no longer working. The independent 12v input was still operational, so I kept it with the intention of *eventually* fixing it…\n
      \n
      And two years later, this is the eventually 😅. The integrated 10v ~45w unit had failed short on the primary side, with a burnt out Y-capacitor and some fried zeners. I started removing bits from the board to try and find all the broken components… but ended up letting out the magic smoke in the process, oops!\n
      \n
      I set out looking for a new power supply, and came across a 12v 45w unit from Meanwell. It was actually smaller than the cooler’s original power supply too, meaning more internal space to use later 🤫\n
      \n
      Spoiler![](https://images2.imgbox.com/33/21/KOCyFNev_o.jpg)\n
      \n
      After searching for a distributor that was actually willing to ship it to a home address, I ordered, and boom:\n
      \n
      ![](https://images2.imgbox.com/30/b9/Kz44bQkP_o.jpg)\n
      \n
      It’s so tiny compared to the original.\n
      \n
      Next I installed an Arduino Nano to control the TEC/peltier module &amp; fan via a cheap LED repeater. I was hoping to reuse the internal temperature sensors, but left them disconnected for now\n
      \n
      ![](https://images2.imgbox.com/9b/91/2KuktXIr_o.jpg)\n
      \n
      After hours writing the arduino code, I finally got it into a usable state. There were issues with brownouts rebooting the Arduino, however with the Meanwell supply in-circuit those mysteriously stopped.\n
      \n
      There are 3 power modes now for the module: 30W, 40W and 50W - with the first two using PWM, and the last one giving it all the beans. I wanted to PWM control the fan too, but decided against it since it sounded absolutely terrible at whatever PWM frequency the Nano is using.\n
      \n
      It powers on to 40W by default, which is under the 45W max rating of the PSU.\n
      \n
      Everything looks good so far running from the bench supply:\n
      \n
      ![](https://images2.imgbox.com/bc/75/tXk3hDZw_o.jpg)\n
      \n
      Now all that was left was to connect the internal supply, and the 12v vehicle input. I was actually supposed to use JST connectors for the Meanwell psu, but didn’t have anything on hand - so improvised with crimping spade terminals and friction fitting those on\n
      \n
      ![](https://images2.imgbox.com/90/35/YpnoC4SN_o.jpg)\n
      \n
      And the moment of truth. Up until this point I hadn’t actually checked if the replacement psu was working or not\n
      \n
      ![](https://images2.imgbox.com/ed/6a/kmJ4WqvX_o.jpg)\n
      \n
      Looking good! I don’t really like the LEDs though, so might do something about those in future.\n
      \n
      You might be wondering how exactly I change the power settings… well since the manufacturer decided it was good enough to shove all the cables in the back, I did the same with a pushbutton 🤫\n
      \n
      ![](https://images2.imgbox.com/d8/8a/Np4X8Wjl_o.jpg)\n
      \n
      Glad to have the electric cooler working again though, feels nice to save large things like this from going to the landfill and extend their life a bit. Excited to hear any thoughts and feedback!
      """
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    +url: "https://images2.imgbox.com/21/88/WZnJo5ol_o.jpg"
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      This decade old electric cooler box gave up the ghost around 2 years ago, with the indoor outlet plug no longer working. The independent 12v input was still operational, so I kept it with the intention of *eventually* fixing it…\n
      \n
      And two years later, this is the eventually 😅. The integrated 10v ~45w unit had failed short on the primary side, with a burnt out Y-capacitor and some fried zeners. I started removing bits from the board to try and find all the broken components… but ended up letting out the magic smoke in the process, oops!\n
      \n
      I set out looking for a new power supply, and came across a 12v 45w unit from Meanwell. It was actually smaller than the cooler’s original power supply too, meaning more internal space to use later 🤫\n
      \n
      Spoiler![](https://images2.imgbox.com/33/21/KOCyFNev_o.jpg)\n
      \n
      After searching for a distributor that was actually willing to ship it to a home address, I ordered, and boom:\n
      \n
      ![](https://images2.imgbox.com/30/b9/Kz44bQkP_o.jpg)\n
      \n
      It’s so tiny compared to the original.\n
      \n
      Next I installed an Arduino Nano to control the TEC/peltier module &amp; fan via a cheap LED repeater. I was hoping to reuse the internal temperature sensors, but left them disconnected for now\n
      \n
      ![](https://images2.imgbox.com/9b/91/2KuktXIr_o.jpg)\n
      \n
      After hours writing the arduino code, I finally got it into a usable state. There were issues with brownouts rebooting the Arduino, however with the Meanwell supply in-circuit those mysteriously stopped.\n
      \n
      There are 3 power modes now for the module: 30W, 40W and 50W - with the first two using PWM, and the last one giving it all the beans. I wanted to PWM control the fan too, but decided against it since it sounded absolutely terrible at whatever PWM frequency the Nano is using.\n
      \n
      It powers on to 40W by default, which is under the 45W max rating of the PSU.\n
      \n
      Everything looks good so far running from the bench supply:\n
      \n
      ![](https://images2.imgbox.com/bc/75/tXk3hDZw_o.jpg)\n
      \n
      Now all that was left was to connect the internal supply, and the 12v vehicle input. I was actually supposed to use JST connectors for the Meanwell psu, but didn’t have anything on hand - so improvised with crimping spade terminals and friction fitting those on\n
      \n
      ![](https://images2.imgbox.com/90/35/YpnoC4SN_o.jpg)\n
      \n
      And the moment of truth. Up until this point I hadn’t actually checked if the replacement psu was working or not\n
      \n
      ![](https://images2.imgbox.com/ed/6a/kmJ4WqvX_o.jpg)\n
      \n
      Looking good! I don’t really like the LEDs though, so might do something about those in future.\n
      \n
      You might be wondering how exactly I change the power settings… well since the manufacturer decided it was good enough to shove all the cables in the back, I did the same with a pushbutton 🤫\n
      \n
      ![](https://images2.imgbox.com/d8/8a/Np4X8Wjl_o.jpg)\n
      \n
      Glad to have the electric cooler working again though, feels nice to save large things like this from going to the landfill and extend their life a bit. Excited to hear any thoughts and feedback!
      """
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"App\Security\Voter\UserVoter"
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      +title: "electronics"
      +description: """
        **Projects, pictures, industry discussions and news about electronic engineering &amp; component-level electronic circuits.**\n
        \n
        Rules\n
        -----\n
        \n
        1: Be nice.\n
        \n
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        \n
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        \n
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        \n
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        \n
        *Ask questions in [discuss.tchncs.de/c/askelectronics](https://discuss.tchncs.de/c/askelectronics)*\n
        \n
        ---
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    +title: "Got my electric cooler box working again 😁"
    +url: "https://images2.imgbox.com/21/88/WZnJo5ol_o.jpg"
    +body: """
      This decade old electric cooler box gave up the ghost around 2 years ago, with the indoor outlet plug no longer working. The independent 12v input was still operational, so I kept it with the intention of *eventually* fixing it…\n
      \n
      And two years later, this is the eventually 😅. The integrated 10v ~45w unit had failed short on the primary side, with a burnt out Y-capacitor and some fried zeners. I started removing bits from the board to try and find all the broken components… but ended up letting out the magic smoke in the process, oops!\n
      \n
      I set out looking for a new power supply, and came across a 12v 45w unit from Meanwell. It was actually smaller than the cooler’s original power supply too, meaning more internal space to use later 🤫\n
      \n
      Spoiler![](https://images2.imgbox.com/33/21/KOCyFNev_o.jpg)\n
      \n
      After searching for a distributor that was actually willing to ship it to a home address, I ordered, and boom:\n
      \n
      ![](https://images2.imgbox.com/30/b9/Kz44bQkP_o.jpg)\n
      \n
      It’s so tiny compared to the original.\n
      \n
      Next I installed an Arduino Nano to control the TEC/peltier module &amp; fan via a cheap LED repeater. I was hoping to reuse the internal temperature sensors, but left them disconnected for now\n
      \n
      ![](https://images2.imgbox.com/9b/91/2KuktXIr_o.jpg)\n
      \n
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      \n
      There are 3 power modes now for the module: 30W, 40W and 50W - with the first two using PWM, and the last one giving it all the beans. I wanted to PWM control the fan too, but decided against it since it sounded absolutely terrible at whatever PWM frequency the Nano is using.\n
      \n
      It powers on to 40W by default, which is under the 45W max rating of the PSU.\n
      \n
      Everything looks good so far running from the bench supply:\n
      \n
      ![](https://images2.imgbox.com/bc/75/tXk3hDZw_o.jpg)\n
      \n
      Now all that was left was to connect the internal supply, and the 12v vehicle input. I was actually supposed to use JST connectors for the Meanwell psu, but didn’t have anything on hand - so improvised with crimping spade terminals and friction fitting those on\n
      \n
      ![](https://images2.imgbox.com/90/35/YpnoC4SN_o.jpg)\n
      \n
      And the moment of truth. Up until this point I hadn’t actually checked if the replacement psu was working or not\n
      \n
      ![](https://images2.imgbox.com/ed/6a/kmJ4WqvX_o.jpg)\n
      \n
      Looking good! I don’t really like the LEDs though, so might do something about those in future.\n
      \n
      You might be wondering how exactly I change the power settings… well since the manufacturer decided it was good enough to shove all the cables in the back, I did the same with a pushbutton 🤫\n
      \n
      ![](https://images2.imgbox.com/d8/8a/Np4X8Wjl_o.jpg)\n
      \n
      Glad to have the electric cooler working again though, feels nice to save large things like this from going to the landfill and extend their life a bit. Excited to hear any thoughts and feedback!
      """
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        \n
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        \n
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        \n
        ---\n
        \n
        *Ask questions in [discuss.tchncs.de/c/askelectronics](https://discuss.tchncs.de/c/askelectronics)*\n
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        ---
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    +slug: "Got-my-electric-cooler-box-working-again"
    +title: "Got my electric cooler box working again 😁"
    +url: "https://images2.imgbox.com/21/88/WZnJo5ol_o.jpg"
    +body: """
      This decade old electric cooler box gave up the ghost around 2 years ago, with the indoor outlet plug no longer working. The independent 12v input was still operational, so I kept it with the intention of *eventually* fixing it…\n
      \n
      And two years later, this is the eventually 😅. The integrated 10v ~45w unit had failed short on the primary side, with a burnt out Y-capacitor and some fried zeners. I started removing bits from the board to try and find all the broken components… but ended up letting out the magic smoke in the process, oops!\n
      \n
      I set out looking for a new power supply, and came across a 12v 45w unit from Meanwell. It was actually smaller than the cooler’s original power supply too, meaning more internal space to use later 🤫\n
      \n
      Spoiler![](https://images2.imgbox.com/33/21/KOCyFNev_o.jpg)\n
      \n
      After searching for a distributor that was actually willing to ship it to a home address, I ordered, and boom:\n
      \n
      ![](https://images2.imgbox.com/30/b9/Kz44bQkP_o.jpg)\n
      \n
      It’s so tiny compared to the original.\n
      \n
      Next I installed an Arduino Nano to control the TEC/peltier module &amp; fan via a cheap LED repeater. I was hoping to reuse the internal temperature sensors, but left them disconnected for now\n
      \n
      ![](https://images2.imgbox.com/9b/91/2KuktXIr_o.jpg)\n
      \n
      After hours writing the arduino code, I finally got it into a usable state. There were issues with brownouts rebooting the Arduino, however with the Meanwell supply in-circuit those mysteriously stopped.\n
      \n
      There are 3 power modes now for the module: 30W, 40W and 50W - with the first two using PWM, and the last one giving it all the beans. I wanted to PWM control the fan too, but decided against it since it sounded absolutely terrible at whatever PWM frequency the Nano is using.\n
      \n
      It powers on to 40W by default, which is under the 45W max rating of the PSU.\n
      \n
      Everything looks good so far running from the bench supply:\n
      \n
      ![](https://images2.imgbox.com/bc/75/tXk3hDZw_o.jpg)\n
      \n
      Now all that was left was to connect the internal supply, and the 12v vehicle input. I was actually supposed to use JST connectors for the Meanwell psu, but didn’t have anything on hand - so improvised with crimping spade terminals and friction fitting those on\n
      \n
      ![](https://images2.imgbox.com/90/35/YpnoC4SN_o.jpg)\n
      \n
      And the moment of truth. Up until this point I hadn’t actually checked if the replacement psu was working or not\n
      \n
      ![](https://images2.imgbox.com/ed/6a/kmJ4WqvX_o.jpg)\n
      \n
      Looking good! I don’t really like the LEDs though, so might do something about those in future.\n
      \n
      You might be wondering how exactly I change the power settings… well since the manufacturer decided it was good enough to shove all the cables in the back, I did the same with a pushbutton 🤫\n
      \n
      ![](https://images2.imgbox.com/d8/8a/Np4X8Wjl_o.jpg)\n
      \n
      Glad to have the electric cooler working again though, feels nice to save large things like this from going to the landfill and extend their life a bit. Excited to hear any thoughts and feedback!
      """
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  +body: "@ [tunnel rush](https://tunnel-run.com) That is quite impressive."
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"App\Security\Voter\UserVoter"
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        \n
        ---\n
        \n
        *Ask questions in [discuss.tchncs.de/c/askelectronics](https://discuss.tchncs.de/c/askelectronics)*\n
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    +title: "Got my electric cooler box working again 😁"
    +url: "https://images2.imgbox.com/21/88/WZnJo5ol_o.jpg"
    +body: """
      This decade old electric cooler box gave up the ghost around 2 years ago, with the indoor outlet plug no longer working. The independent 12v input was still operational, so I kept it with the intention of *eventually* fixing it…\n
      \n
      And two years later, this is the eventually 😅. The integrated 10v ~45w unit had failed short on the primary side, with a burnt out Y-capacitor and some fried zeners. I started removing bits from the board to try and find all the broken components… but ended up letting out the magic smoke in the process, oops!\n
      \n
      I set out looking for a new power supply, and came across a 12v 45w unit from Meanwell. It was actually smaller than the cooler’s original power supply too, meaning more internal space to use later 🤫\n
      \n
      Spoiler![](https://images2.imgbox.com/33/21/KOCyFNev_o.jpg)\n
      \n
      After searching for a distributor that was actually willing to ship it to a home address, I ordered, and boom:\n
      \n
      ![](https://images2.imgbox.com/30/b9/Kz44bQkP_o.jpg)\n
      \n
      It’s so tiny compared to the original.\n
      \n
      Next I installed an Arduino Nano to control the TEC/peltier module &amp; fan via a cheap LED repeater. I was hoping to reuse the internal temperature sensors, but left them disconnected for now\n
      \n
      ![](https://images2.imgbox.com/9b/91/2KuktXIr_o.jpg)\n
      \n
      After hours writing the arduino code, I finally got it into a usable state. There were issues with brownouts rebooting the Arduino, however with the Meanwell supply in-circuit those mysteriously stopped.\n
      \n
      There are 3 power modes now for the module: 30W, 40W and 50W - with the first two using PWM, and the last one giving it all the beans. I wanted to PWM control the fan too, but decided against it since it sounded absolutely terrible at whatever PWM frequency the Nano is using.\n
      \n
      It powers on to 40W by default, which is under the 45W max rating of the PSU.\n
      \n
      Everything looks good so far running from the bench supply:\n
      \n
      ![](https://images2.imgbox.com/bc/75/tXk3hDZw_o.jpg)\n
      \n
      Now all that was left was to connect the internal supply, and the 12v vehicle input. I was actually supposed to use JST connectors for the Meanwell psu, but didn’t have anything on hand - so improvised with crimping spade terminals and friction fitting those on\n
      \n
      ![](https://images2.imgbox.com/90/35/YpnoC4SN_o.jpg)\n
      \n
      And the moment of truth. Up until this point I hadn’t actually checked if the replacement psu was working or not\n
      \n
      ![](https://images2.imgbox.com/ed/6a/kmJ4WqvX_o.jpg)\n
      \n
      Looking good! I don’t really like the LEDs though, so might do something about those in future.\n
      \n
      You might be wondering how exactly I change the power settings… well since the manufacturer decided it was good enough to shove all the cables in the back, I did the same with a pushbutton 🤫\n
      \n
      ![](https://images2.imgbox.com/d8/8a/Np4X8Wjl_o.jpg)\n
      \n
      Glad to have the electric cooler working again though, feels nice to save large things like this from going to the landfill and extend their life a bit. Excited to hear any thoughts and feedback!
      """
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    +title: "Got my electric cooler box working again 😁"
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    +body: """
      This decade old electric cooler box gave up the ghost around 2 years ago, with the indoor outlet plug no longer working. The independent 12v input was still operational, so I kept it with the intention of *eventually* fixing it…\n
      \n
      And two years later, this is the eventually 😅. The integrated 10v ~45w unit had failed short on the primary side, with a burnt out Y-capacitor and some fried zeners. I started removing bits from the board to try and find all the broken components… but ended up letting out the magic smoke in the process, oops!\n
      \n
      I set out looking for a new power supply, and came across a 12v 45w unit from Meanwell. It was actually smaller than the cooler’s original power supply too, meaning more internal space to use later 🤫\n
      \n
      Spoiler![](https://images2.imgbox.com/33/21/KOCyFNev_o.jpg)\n
      \n
      After searching for a distributor that was actually willing to ship it to a home address, I ordered, and boom:\n
      \n
      ![](https://images2.imgbox.com/30/b9/Kz44bQkP_o.jpg)\n
      \n
      It’s so tiny compared to the original.\n
      \n
      Next I installed an Arduino Nano to control the TEC/peltier module &amp; fan via a cheap LED repeater. I was hoping to reuse the internal temperature sensors, but left them disconnected for now\n
      \n
      ![](https://images2.imgbox.com/9b/91/2KuktXIr_o.jpg)\n
      \n
      After hours writing the arduino code, I finally got it into a usable state. There were issues with brownouts rebooting the Arduino, however with the Meanwell supply in-circuit those mysteriously stopped.\n
      \n
      There are 3 power modes now for the module: 30W, 40W and 50W - with the first two using PWM, and the last one giving it all the beans. I wanted to PWM control the fan too, but decided against it since it sounded absolutely terrible at whatever PWM frequency the Nano is using.\n
      \n
      It powers on to 40W by default, which is under the 45W max rating of the PSU.\n
      \n
      Everything looks good so far running from the bench supply:\n
      \n
      ![](https://images2.imgbox.com/bc/75/tXk3hDZw_o.jpg)\n
      \n
      Now all that was left was to connect the internal supply, and the 12v vehicle input. I was actually supposed to use JST connectors for the Meanwell psu, but didn’t have anything on hand - so improvised with crimping spade terminals and friction fitting those on\n
      \n
      ![](https://images2.imgbox.com/90/35/YpnoC4SN_o.jpg)\n
      \n
      And the moment of truth. Up until this point I hadn’t actually checked if the replacement psu was working or not\n
      \n
      ![](https://images2.imgbox.com/ed/6a/kmJ4WqvX_o.jpg)\n
      \n
      Looking good! I don’t really like the LEDs though, so might do something about those in future.\n
      \n
      You might be wondering how exactly I change the power settings… well since the manufacturer decided it was good enough to shove all the cables in the back, I did the same with a pushbutton 🤫\n
      \n
      ![](https://images2.imgbox.com/d8/8a/Np4X8Wjl_o.jpg)\n
      \n
      Glad to have the electric cooler working again though, feels nice to save large things like this from going to the landfill and extend their life a bit. Excited to hear any thoughts and feedback!
      """
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      This decade old electric cooler box gave up the ghost around 2 years ago, with the indoor outlet plug no longer working. The independent 12v input was still operational, so I kept it with the intention of *eventually* fixing it…\n
      \n
      And two years later, this is the eventually 😅. The integrated 10v ~45w unit had failed short on the primary side, with a burnt out Y-capacitor and some fried zeners. I started removing bits from the board to try and find all the broken components… but ended up letting out the magic smoke in the process, oops!\n
      \n
      I set out looking for a new power supply, and came across a 12v 45w unit from Meanwell. It was actually smaller than the cooler’s original power supply too, meaning more internal space to use later 🤫\n
      \n
      Spoiler![](https://images2.imgbox.com/33/21/KOCyFNev_o.jpg)\n
      \n
      After searching for a distributor that was actually willing to ship it to a home address, I ordered, and boom:\n
      \n
      ![](https://images2.imgbox.com/30/b9/Kz44bQkP_o.jpg)\n
      \n
      It’s so tiny compared to the original.\n
      \n
      Next I installed an Arduino Nano to control the TEC/peltier module &amp; fan via a cheap LED repeater. I was hoping to reuse the internal temperature sensors, but left them disconnected for now\n
      \n
      ![](https://images2.imgbox.com/9b/91/2KuktXIr_o.jpg)\n
      \n
      After hours writing the arduino code, I finally got it into a usable state. There were issues with brownouts rebooting the Arduino, however with the Meanwell supply in-circuit those mysteriously stopped.\n
      \n
      There are 3 power modes now for the module: 30W, 40W and 50W - with the first two using PWM, and the last one giving it all the beans. I wanted to PWM control the fan too, but decided against it since it sounded absolutely terrible at whatever PWM frequency the Nano is using.\n
      \n
      It powers on to 40W by default, which is under the 45W max rating of the PSU.\n
      \n
      Everything looks good so far running from the bench supply:\n
      \n
      ![](https://images2.imgbox.com/bc/75/tXk3hDZw_o.jpg)\n
      \n
      Now all that was left was to connect the internal supply, and the 12v vehicle input. I was actually supposed to use JST connectors for the Meanwell psu, but didn’t have anything on hand - so improvised with crimping spade terminals and friction fitting those on\n
      \n
      ![](https://images2.imgbox.com/90/35/YpnoC4SN_o.jpg)\n
      \n
      And the moment of truth. Up until this point I hadn’t actually checked if the replacement psu was working or not\n
      \n
      ![](https://images2.imgbox.com/ed/6a/kmJ4WqvX_o.jpg)\n
      \n
      Looking good! I don’t really like the LEDs though, so might do something about those in future.\n
      \n
      You might be wondering how exactly I change the power settings… well since the manufacturer decided it was good enough to shove all the cables in the back, I did the same with a pushbutton 🤫\n
      \n
      ![](https://images2.imgbox.com/d8/8a/Np4X8Wjl_o.jpg)\n
      \n
      Glad to have the electric cooler working again though, feels nice to save large things like this from going to the landfill and extend their life a bit. Excited to hear any thoughts and feedback!
      """
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      +description: """
        **Projects, pictures, industry discussions and news about electronic engineering &amp; 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
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        \n
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        \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
        ---
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    +title: "Got my electric cooler box working again 😁"
    +url: "https://images2.imgbox.com/21/88/WZnJo5ol_o.jpg"
    +body: """
      This decade old electric cooler box gave up the ghost around 2 years ago, with the indoor outlet plug no longer working. The independent 12v input was still operational, so I kept it with the intention of *eventually* fixing it…\n
      \n
      And two years later, this is the eventually 😅. The integrated 10v ~45w unit had failed short on the primary side, with a burnt out Y-capacitor and some fried zeners. I started removing bits from the board to try and find all the broken components… but ended up letting out the magic smoke in the process, oops!\n
      \n
      I set out looking for a new power supply, and came across a 12v 45w unit from Meanwell. It was actually smaller than the cooler’s original power supply too, meaning more internal space to use later 🤫\n
      \n
      Spoiler![](https://images2.imgbox.com/33/21/KOCyFNev_o.jpg)\n
      \n
      After searching for a distributor that was actually willing to ship it to a home address, I ordered, and boom:\n
      \n
      ![](https://images2.imgbox.com/30/b9/Kz44bQkP_o.jpg)\n
      \n
      It’s so tiny compared to the original.\n
      \n
      Next I installed an Arduino Nano to control the TEC/peltier module &amp; fan via a cheap LED repeater. I was hoping to reuse the internal temperature sensors, but left them disconnected for now\n
      \n
      ![](https://images2.imgbox.com/9b/91/2KuktXIr_o.jpg)\n
      \n
      After hours writing the arduino code, I finally got it into a usable state. There were issues with brownouts rebooting the Arduino, however with the Meanwell supply in-circuit those mysteriously stopped.\n
      \n
      There are 3 power modes now for the module: 30W, 40W and 50W - with the first two using PWM, and the last one giving it all the beans. I wanted to PWM control the fan too, but decided against it since it sounded absolutely terrible at whatever PWM frequency the Nano is using.\n
      \n
      It powers on to 40W by default, which is under the 45W max rating of the PSU.\n
      \n
      Everything looks good so far running from the bench supply:\n
      \n
      ![](https://images2.imgbox.com/bc/75/tXk3hDZw_o.jpg)\n
      \n
      Now all that was left was to connect the internal supply, and the 12v vehicle input. I was actually supposed to use JST connectors for the Meanwell psu, but didn’t have anything on hand - so improvised with crimping spade terminals and friction fitting those on\n
      \n
      ![](https://images2.imgbox.com/90/35/YpnoC4SN_o.jpg)\n
      \n
      And the moment of truth. Up until this point I hadn’t actually checked if the replacement psu was working or not\n
      \n
      ![](https://images2.imgbox.com/ed/6a/kmJ4WqvX_o.jpg)\n
      \n
      Looking good! I don’t really like the LEDs though, so might do something about those in future.\n
      \n
      You might be wondering how exactly I change the power settings… well since the manufacturer decided it was good enough to shove all the cables in the back, I did the same with a pushbutton 🤫\n
      \n
      ![](https://images2.imgbox.com/d8/8a/Np4X8Wjl_o.jpg)\n
      \n
      Glad to have the electric cooler working again though, feels nice to save large things like this from going to the landfill and extend their life a bit. Excited to hear any thoughts and feedback!
      """
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      This decade old electric cooler box gave up the ghost around 2 years ago, with the indoor outlet plug no longer working. The independent 12v input was still operational, so I kept it with the intention of *eventually* fixing it…\n
      \n
      And two years later, this is the eventually 😅. The integrated 10v ~45w unit had failed short on the primary side, with a burnt out Y-capacitor and some fried zeners. I started removing bits from the board to try and find all the broken components… but ended up letting out the magic smoke in the process, oops!\n
      \n
      I set out looking for a new power supply, and came across a 12v 45w unit from Meanwell. It was actually smaller than the cooler’s original power supply too, meaning more internal space to use later 🤫\n
      \n
      Spoiler![](https://images2.imgbox.com/33/21/KOCyFNev_o.jpg)\n
      \n
      After searching for a distributor that was actually willing to ship it to a home address, I ordered, and boom:\n
      \n
      ![](https://images2.imgbox.com/30/b9/Kz44bQkP_o.jpg)\n
      \n
      It’s so tiny compared to the original.\n
      \n
      Next I installed an Arduino Nano to control the TEC/peltier module &amp; fan via a cheap LED repeater. I was hoping to reuse the internal temperature sensors, but left them disconnected for now\n
      \n
      ![](https://images2.imgbox.com/9b/91/2KuktXIr_o.jpg)\n
      \n
      After hours writing the arduino code, I finally got it into a usable state. There were issues with brownouts rebooting the Arduino, however with the Meanwell supply in-circuit those mysteriously stopped.\n
      \n
      There are 3 power modes now for the module: 30W, 40W and 50W - with the first two using PWM, and the last one giving it all the beans. I wanted to PWM control the fan too, but decided against it since it sounded absolutely terrible at whatever PWM frequency the Nano is using.\n
      \n
      It powers on to 40W by default, which is under the 45W max rating of the PSU.\n
      \n
      Everything looks good so far running from the bench supply:\n
      \n
      ![](https://images2.imgbox.com/bc/75/tXk3hDZw_o.jpg)\n
      \n
      Now all that was left was to connect the internal supply, and the 12v vehicle input. I was actually supposed to use JST connectors for the Meanwell psu, but didn’t have anything on hand - so improvised with crimping spade terminals and friction fitting those on\n
      \n
      ![](https://images2.imgbox.com/90/35/YpnoC4SN_o.jpg)\n
      \n
      And the moment of truth. Up until this point I hadn’t actually checked if the replacement psu was working or not\n
      \n
      ![](https://images2.imgbox.com/ed/6a/kmJ4WqvX_o.jpg)\n
      \n
      Looking good! I don’t really like the LEDs though, so might do something about those in future.\n
      \n
      You might be wondering how exactly I change the power settings… well since the manufacturer decided it was good enough to shove all the cables in the back, I did the same with a pushbutton 🤫\n
      \n
      ![](https://images2.imgbox.com/d8/8a/Np4X8Wjl_o.jpg)\n
      \n
      Glad to have the electric cooler working again though, feels nice to save large things like this from going to the landfill and extend their life a bit. Excited to hear any thoughts and feedback!
      """
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        \n
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        \n
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        \n
        ---\n
        \n
        *Ask questions in [discuss.tchncs.de/c/askelectronics](https://discuss.tchncs.de/c/askelectronics)*\n
        \n
        ---
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    +url: "https://images2.imgbox.com/21/88/WZnJo5ol_o.jpg"
    +body: """
      This decade old electric cooler box gave up the ghost around 2 years ago, with the indoor outlet plug no longer working. The independent 12v input was still operational, so I kept it with the intention of *eventually* fixing it…\n
      \n
      And two years later, this is the eventually 😅. The integrated 10v ~45w unit had failed short on the primary side, with a burnt out Y-capacitor and some fried zeners. I started removing bits from the board to try and find all the broken components… but ended up letting out the magic smoke in the process, oops!\n
      \n
      I set out looking for a new power supply, and came across a 12v 45w unit from Meanwell. It was actually smaller than the cooler’s original power supply too, meaning more internal space to use later 🤫\n
      \n
      Spoiler![](https://images2.imgbox.com/33/21/KOCyFNev_o.jpg)\n
      \n
      After searching for a distributor that was actually willing to ship it to a home address, I ordered, and boom:\n
      \n
      ![](https://images2.imgbox.com/30/b9/Kz44bQkP_o.jpg)\n
      \n
      It’s so tiny compared to the original.\n
      \n
      Next I installed an Arduino Nano to control the TEC/peltier module &amp; fan via a cheap LED repeater. I was hoping to reuse the internal temperature sensors, but left them disconnected for now\n
      \n
      ![](https://images2.imgbox.com/9b/91/2KuktXIr_o.jpg)\n
      \n
      After hours writing the arduino code, I finally got it into a usable state. There were issues with brownouts rebooting the Arduino, however with the Meanwell supply in-circuit those mysteriously stopped.\n
      \n
      There are 3 power modes now for the module: 30W, 40W and 50W - with the first two using PWM, and the last one giving it all the beans. I wanted to PWM control the fan too, but decided against it since it sounded absolutely terrible at whatever PWM frequency the Nano is using.\n
      \n
      It powers on to 40W by default, which is under the 45W max rating of the PSU.\n
      \n
      Everything looks good so far running from the bench supply:\n
      \n
      ![](https://images2.imgbox.com/bc/75/tXk3hDZw_o.jpg)\n
      \n
      Now all that was left was to connect the internal supply, and the 12v vehicle input. I was actually supposed to use JST connectors for the Meanwell psu, but didn’t have anything on hand - so improvised with crimping spade terminals and friction fitting those on\n
      \n
      ![](https://images2.imgbox.com/90/35/YpnoC4SN_o.jpg)\n
      \n
      And the moment of truth. Up until this point I hadn’t actually checked if the replacement psu was working or not\n
      \n
      ![](https://images2.imgbox.com/ed/6a/kmJ4WqvX_o.jpg)\n
      \n
      Looking good! I don’t really like the LEDs though, so might do something about those in future.\n
      \n
      You might be wondering how exactly I change the power settings… well since the manufacturer decided it was good enough to shove all the cables in the back, I did the same with a pushbutton 🤫\n
      \n
      ![](https://images2.imgbox.com/d8/8a/Np4X8Wjl_o.jpg)\n
      \n
      Glad to have the electric cooler working again though, feels nice to save large things like this from going to the landfill and extend their life a bit. Excited to hear any thoughts and feedback!
      """
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    Neat, thanks for the info!\n
    \n
    I did some further reading into this and found out the PWM pins I’m using are controlled by their own separate timer (instead of the one used by the Arduino core for millis(), micros() etc) so definitely will be trying this out the next time I rip the cooler open 😁
    """
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    +slug: "Got-my-electric-cooler-box-working-again"
    +title: "Got my electric cooler box working again 😁"
    +url: "https://images2.imgbox.com/21/88/WZnJo5ol_o.jpg"
    +body: """
      This decade old electric cooler box gave up the ghost around 2 years ago, with the indoor outlet plug no longer working. The independent 12v input was still operational, so I kept it with the intention of *eventually* fixing it…\n
      \n
      And two years later, this is the eventually 😅. The integrated 10v ~45w unit had failed short on the primary side, with a burnt out Y-capacitor and some fried zeners. I started removing bits from the board to try and find all the broken components… but ended up letting out the magic smoke in the process, oops!\n
      \n
      I set out looking for a new power supply, and came across a 12v 45w unit from Meanwell. It was actually smaller than the cooler’s original power supply too, meaning more internal space to use later 🤫\n
      \n
      Spoiler![](https://images2.imgbox.com/33/21/KOCyFNev_o.jpg)\n
      \n
      After searching for a distributor that was actually willing to ship it to a home address, I ordered, and boom:\n
      \n
      ![](https://images2.imgbox.com/30/b9/Kz44bQkP_o.jpg)\n
      \n
      It’s so tiny compared to the original.\n
      \n
      Next I installed an Arduino Nano to control the TEC/peltier module &amp; fan via a cheap LED repeater. I was hoping to reuse the internal temperature sensors, but left them disconnected for now\n
      \n
      ![](https://images2.imgbox.com/9b/91/2KuktXIr_o.jpg)\n
      \n
      After hours writing the arduino code, I finally got it into a usable state. There were issues with brownouts rebooting the Arduino, however with the Meanwell supply in-circuit those mysteriously stopped.\n
      \n
      There are 3 power modes now for the module: 30W, 40W and 50W - with the first two using PWM, and the last one giving it all the beans. I wanted to PWM control the fan too, but decided against it since it sounded absolutely terrible at whatever PWM frequency the Nano is using.\n
      \n
      It powers on to 40W by default, which is under the 45W max rating of the PSU.\n
      \n
      Everything looks good so far running from the bench supply:\n
      \n
      ![](https://images2.imgbox.com/bc/75/tXk3hDZw_o.jpg)\n
      \n
      Now all that was left was to connect the internal supply, and the 12v vehicle input. I was actually supposed to use JST connectors for the Meanwell psu, but didn’t have anything on hand - so improvised with crimping spade terminals and friction fitting those on\n
      \n
      ![](https://images2.imgbox.com/90/35/YpnoC4SN_o.jpg)\n
      \n
      And the moment of truth. Up until this point I hadn’t actually checked if the replacement psu was working or not\n
      \n
      ![](https://images2.imgbox.com/ed/6a/kmJ4WqvX_o.jpg)\n
      \n
      Looking good! I don’t really like the LEDs though, so might do something about those in future.\n
      \n
      You might be wondering how exactly I change the power settings… well since the manufacturer decided it was good enough to shove all the cables in the back, I did the same with a pushbutton 🤫\n
      \n
      ![](https://images2.imgbox.com/d8/8a/Np4X8Wjl_o.jpg)\n
      \n
      Glad to have the electric cooler working again though, feels nice to save large things like this from going to the landfill and extend their life a bit. Excited to hear any thoughts and feedback!
      """
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    Neat, thanks for the info!\n
    \n
    I did some further reading into this and found out the PWM pins I’m using are controlled by their own separate timer (instead of the one used by the Arduino core for millis(), micros() etc) so definitely will be trying this out the next time I rip the cooler open 😁
    """
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    +url: "https://images2.imgbox.com/21/88/WZnJo5ol_o.jpg"
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      This decade old electric cooler box gave up the ghost around 2 years ago, with the indoor outlet plug no longer working. The independent 12v input was still operational, so I kept it with the intention of *eventually* fixing it…\n
      \n
      And two years later, this is the eventually 😅. The integrated 10v ~45w unit had failed short on the primary side, with a burnt out Y-capacitor and some fried zeners. I started removing bits from the board to try and find all the broken components… but ended up letting out the magic smoke in the process, oops!\n
      \n
      I set out looking for a new power supply, and came across a 12v 45w unit from Meanwell. It was actually smaller than the cooler’s original power supply too, meaning more internal space to use later 🤫\n
      \n
      Spoiler![](https://images2.imgbox.com/33/21/KOCyFNev_o.jpg)\n
      \n
      After searching for a distributor that was actually willing to ship it to a home address, I ordered, and boom:\n
      \n
      ![](https://images2.imgbox.com/30/b9/Kz44bQkP_o.jpg)\n
      \n
      It’s so tiny compared to the original.\n
      \n
      Next I installed an Arduino Nano to control the TEC/peltier module &amp; fan via a cheap LED repeater. I was hoping to reuse the internal temperature sensors, but left them disconnected for now\n
      \n
      ![](https://images2.imgbox.com/9b/91/2KuktXIr_o.jpg)\n
      \n
      After hours writing the arduino code, I finally got it into a usable state. There were issues with brownouts rebooting the Arduino, however with the Meanwell supply in-circuit those mysteriously stopped.\n
      \n
      There are 3 power modes now for the module: 30W, 40W and 50W - with the first two using PWM, and the last one giving it all the beans. I wanted to PWM control the fan too, but decided against it since it sounded absolutely terrible at whatever PWM frequency the Nano is using.\n
      \n
      It powers on to 40W by default, which is under the 45W max rating of the PSU.\n
      \n
      Everything looks good so far running from the bench supply:\n
      \n
      ![](https://images2.imgbox.com/bc/75/tXk3hDZw_o.jpg)\n
      \n
      Now all that was left was to connect the internal supply, and the 12v vehicle input. I was actually supposed to use JST connectors for the Meanwell psu, but didn’t have anything on hand - so improvised with crimping spade terminals and friction fitting those on\n
      \n
      ![](https://images2.imgbox.com/90/35/YpnoC4SN_o.jpg)\n
      \n
      And the moment of truth. Up until this point I hadn’t actually checked if the replacement psu was working or not\n
      \n
      ![](https://images2.imgbox.com/ed/6a/kmJ4WqvX_o.jpg)\n
      \n
      Looking good! I don’t really like the LEDs though, so might do something about those in future.\n
      \n
      You might be wondering how exactly I change the power settings… well since the manufacturer decided it was good enough to shove all the cables in the back, I did the same with a pushbutton 🤫\n
      \n
      ![](https://images2.imgbox.com/d8/8a/Np4X8Wjl_o.jpg)\n
      \n
      Glad to have the electric cooler working again though, feels nice to save large things like this from going to the landfill and extend their life a bit. Excited to hear any thoughts and feedback!
      """
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    +body: "The Nano’s PWM frequency can be adjusted from the default 490 Hz, with a maximum of 4MHz, at which point the resolution is 4. At a resolution of 256 (which is more than enough for this application), the maximum PWM frequency is 62.5 kHz, which is far outside our hearing range, though can still barely be heard by some younger cats"
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  +body: """
    Neat, thanks for the info!\n
    \n
    I did some further reading into this and found out the PWM pins I’m using are controlled by their own separate timer (instead of the one used by the Arduino core for millis(), micros() etc) so definitely will be trying this out the next time I rip the cooler open 😁
    """
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        ---\n
        \n
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    +title: "Got my electric cooler box working again 😁"
    +url: "https://images2.imgbox.com/21/88/WZnJo5ol_o.jpg"
    +body: """
      This decade old electric cooler box gave up the ghost around 2 years ago, with the indoor outlet plug no longer working. The independent 12v input was still operational, so I kept it with the intention of *eventually* fixing it…\n
      \n
      And two years later, this is the eventually 😅. The integrated 10v ~45w unit had failed short on the primary side, with a burnt out Y-capacitor and some fried zeners. I started removing bits from the board to try and find all the broken components… but ended up letting out the magic smoke in the process, oops!\n
      \n
      I set out looking for a new power supply, and came across a 12v 45w unit from Meanwell. It was actually smaller than the cooler’s original power supply too, meaning more internal space to use later 🤫\n
      \n
      Spoiler![](https://images2.imgbox.com/33/21/KOCyFNev_o.jpg)\n
      \n
      After searching for a distributor that was actually willing to ship it to a home address, I ordered, and boom:\n
      \n
      ![](https://images2.imgbox.com/30/b9/Kz44bQkP_o.jpg)\n
      \n
      It’s so tiny compared to the original.\n
      \n
      Next I installed an Arduino Nano to control the TEC/peltier module &amp; fan via a cheap LED repeater. I was hoping to reuse the internal temperature sensors, but left them disconnected for now\n
      \n
      ![](https://images2.imgbox.com/9b/91/2KuktXIr_o.jpg)\n
      \n
      After hours writing the arduino code, I finally got it into a usable state. There were issues with brownouts rebooting the Arduino, however with the Meanwell supply in-circuit those mysteriously stopped.\n
      \n
      There are 3 power modes now for the module: 30W, 40W and 50W - with the first two using PWM, and the last one giving it all the beans. I wanted to PWM control the fan too, but decided against it since it sounded absolutely terrible at whatever PWM frequency the Nano is using.\n
      \n
      It powers on to 40W by default, which is under the 45W max rating of the PSU.\n
      \n
      Everything looks good so far running from the bench supply:\n
      \n
      ![](https://images2.imgbox.com/bc/75/tXk3hDZw_o.jpg)\n
      \n
      Now all that was left was to connect the internal supply, and the 12v vehicle input. I was actually supposed to use JST connectors for the Meanwell psu, but didn’t have anything on hand - so improvised with crimping spade terminals and friction fitting those on\n
      \n
      ![](https://images2.imgbox.com/90/35/YpnoC4SN_o.jpg)\n
      \n
      And the moment of truth. Up until this point I hadn’t actually checked if the replacement psu was working or not\n
      \n
      ![](https://images2.imgbox.com/ed/6a/kmJ4WqvX_o.jpg)\n
      \n
      Looking good! I don’t really like the LEDs though, so might do something about those in future.\n
      \n
      You might be wondering how exactly I change the power settings… well since the manufacturer decided it was good enough to shove all the cables in the back, I did the same with a pushbutton 🤫\n
      \n
      ![](https://images2.imgbox.com/d8/8a/Np4X8Wjl_o.jpg)\n
      \n
      Glad to have the electric cooler working again though, feels nice to save large things like this from going to the landfill and extend their life a bit. Excited to hear any thoughts and feedback!
      """
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    That’s really neat. You’ve already got an Arduino in there, add an esp32 and connect it to Homeassistant!\n
    \n
    I agree it’s nice to fix something that big and save the garbage that it could have produced.
    """
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      This decade old electric cooler box gave up the ghost around 2 years ago, with the indoor outlet plug no longer working. The independent 12v input was still operational, so I kept it with the intention of *eventually* fixing it…\n
      \n
      And two years later, this is the eventually 😅. The integrated 10v ~45w unit had failed short on the primary side, with a burnt out Y-capacitor and some fried zeners. I started removing bits from the board to try and find all the broken components… but ended up letting out the magic smoke in the process, oops!\n
      \n
      I set out looking for a new power supply, and came across a 12v 45w unit from Meanwell. It was actually smaller than the cooler’s original power supply too, meaning more internal space to use later 🤫\n
      \n
      Spoiler![](https://images2.imgbox.com/33/21/KOCyFNev_o.jpg)\n
      \n
      After searching for a distributor that was actually willing to ship it to a home address, I ordered, and boom:\n
      \n
      ![](https://images2.imgbox.com/30/b9/Kz44bQkP_o.jpg)\n
      \n
      It’s so tiny compared to the original.\n
      \n
      Next I installed an Arduino Nano to control the TEC/peltier module &amp; fan via a cheap LED repeater. I was hoping to reuse the internal temperature sensors, but left them disconnected for now\n
      \n
      ![](https://images2.imgbox.com/9b/91/2KuktXIr_o.jpg)\n
      \n
      After hours writing the arduino code, I finally got it into a usable state. There were issues with brownouts rebooting the Arduino, however with the Meanwell supply in-circuit those mysteriously stopped.\n
      \n
      There are 3 power modes now for the module: 30W, 40W and 50W - with the first two using PWM, and the last one giving it all the beans. I wanted to PWM control the fan too, but decided against it since it sounded absolutely terrible at whatever PWM frequency the Nano is using.\n
      \n
      It powers on to 40W by default, which is under the 45W max rating of the PSU.\n
      \n
      Everything looks good so far running from the bench supply:\n
      \n
      ![](https://images2.imgbox.com/bc/75/tXk3hDZw_o.jpg)\n
      \n
      Now all that was left was to connect the internal supply, and the 12v vehicle input. I was actually supposed to use JST connectors for the Meanwell psu, but didn’t have anything on hand - so improvised with crimping spade terminals and friction fitting those on\n
      \n
      ![](https://images2.imgbox.com/90/35/YpnoC4SN_o.jpg)\n
      \n
      And the moment of truth. Up until this point I hadn’t actually checked if the replacement psu was working or not\n
      \n
      ![](https://images2.imgbox.com/ed/6a/kmJ4WqvX_o.jpg)\n
      \n
      Looking good! I don’t really like the LEDs though, so might do something about those in future.\n
      \n
      You might be wondering how exactly I change the power settings… well since the manufacturer decided it was good enough to shove all the cables in the back, I did the same with a pushbutton 🤫\n
      \n
      ![](https://images2.imgbox.com/d8/8a/Np4X8Wjl_o.jpg)\n
      \n
      Glad to have the electric cooler working again though, feels nice to save large things like this from going to the landfill and extend their life a bit. Excited to hear any thoughts and feedback!
      """
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    That’s really neat. You’ve already got an Arduino in there, add an esp32 and connect it to Homeassistant!\n
    \n
    I agree it’s nice to fix something that big and save the garbage that it could have produced.
    """
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        **Projects, pictures, industry discussions and news about electronic engineering &amp; component-level electronic circuits.**\n
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        -----\n
        \n
        1: Be nice.\n
        \n
        2: Be on-topic (eg: *Electronic*, not *electrical*).\n
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        \n
        ---\n
        \n
        *Ask questions in [discuss.tchncs.de/c/askelectronics](https://discuss.tchncs.de/c/askelectronics)*\n
        \n
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    +slug: "Got-my-electric-cooler-box-working-again"
    +title: "Got my electric cooler box working again 😁"
    +url: "https://images2.imgbox.com/21/88/WZnJo5ol_o.jpg"
    +body: """
      This decade old electric cooler box gave up the ghost around 2 years ago, with the indoor outlet plug no longer working. The independent 12v input was still operational, so I kept it with the intention of *eventually* fixing it…\n
      \n
      And two years later, this is the eventually 😅. The integrated 10v ~45w unit had failed short on the primary side, with a burnt out Y-capacitor and some fried zeners. I started removing bits from the board to try and find all the broken components… but ended up letting out the magic smoke in the process, oops!\n
      \n
      I set out looking for a new power supply, and came across a 12v 45w unit from Meanwell. It was actually smaller than the cooler’s original power supply too, meaning more internal space to use later 🤫\n
      \n
      Spoiler![](https://images2.imgbox.com/33/21/KOCyFNev_o.jpg)\n
      \n
      After searching for a distributor that was actually willing to ship it to a home address, I ordered, and boom:\n
      \n
      ![](https://images2.imgbox.com/30/b9/Kz44bQkP_o.jpg)\n
      \n
      It’s so tiny compared to the original.\n
      \n
      Next I installed an Arduino Nano to control the TEC/peltier module &amp; fan via a cheap LED repeater. I was hoping to reuse the internal temperature sensors, but left them disconnected for now\n
      \n
      ![](https://images2.imgbox.com/9b/91/2KuktXIr_o.jpg)\n
      \n
      After hours writing the arduino code, I finally got it into a usable state. There were issues with brownouts rebooting the Arduino, however with the Meanwell supply in-circuit those mysteriously stopped.\n
      \n
      There are 3 power modes now for the module: 30W, 40W and 50W - with the first two using PWM, and the last one giving it all the beans. I wanted to PWM control the fan too, but decided against it since it sounded absolutely terrible at whatever PWM frequency the Nano is using.\n
      \n
      It powers on to 40W by default, which is under the 45W max rating of the PSU.\n
      \n
      Everything looks good so far running from the bench supply:\n
      \n
      ![](https://images2.imgbox.com/bc/75/tXk3hDZw_o.jpg)\n
      \n
      Now all that was left was to connect the internal supply, and the 12v vehicle input. I was actually supposed to use JST connectors for the Meanwell psu, but didn’t have anything on hand - so improvised with crimping spade terminals and friction fitting those on\n
      \n
      ![](https://images2.imgbox.com/90/35/YpnoC4SN_o.jpg)\n
      \n
      And the moment of truth. Up until this point I hadn’t actually checked if the replacement psu was working or not\n
      \n
      ![](https://images2.imgbox.com/ed/6a/kmJ4WqvX_o.jpg)\n
      \n
      Looking good! I don’t really like the LEDs though, so might do something about those in future.\n
      \n
      You might be wondering how exactly I change the power settings… well since the manufacturer decided it was good enough to shove all the cables in the back, I did the same with a pushbutton 🤫\n
      \n
      ![](https://images2.imgbox.com/d8/8a/Np4X8Wjl_o.jpg)\n
      \n
      Glad to have the electric cooler working again though, feels nice to save large things like this from going to the landfill and extend their life a bit. Excited to hear any thoughts and feedback!
      """
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    That’s really neat. You’ve already got an Arduino in there, add an esp32 and connect it to Homeassistant!\n
    \n
    I agree it’s nice to fix something that big and save the garbage that it could have produced.
    """
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  +title: "electronics"
  +description: """
    **Projects, pictures, industry discussions and news about electronic engineering &amp; 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
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    ---
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