GET https://kbin.spritesserver.nl/index.php/u/@charmed_electron@programming.dev/newest/2023-08-18::2023-08-18

Response
200 OK
IP
216.73.216.34
Profiled on
Token
9f922c

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 …}
}
 1.14 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 
Proxies\__CG__\App\Entity\Entry {#1582
  +user: Proxies\__CG__\App\Entity\User {#2459 …}
  +magazine: Proxies\__CG__\App\Entity\Magazine {#1574 …}
  +image: null
  +domain: Proxies\__CG__\App\Entity\Domain {#1718 …}
  +slug: "Is-harvesting-small-amounts-of-electricity-a-fools-errand"
  +title: "Is “harvesting” small amounts of electricity a fools errand?"
  +url: null
  +body: """
    Serious question from a beginner in electronics. For reasons I do not fully understand, I have become fixated on the idea of collecting small amounts of electricity from “interesting” sources. I don’t mean “free energy”, instead, I mean things like extracting a few mV from being so close to a AM radio tower using two tuned loop antennas in phase with each other, or getting a few mV from the rain’s kinetic energy with PTFE and using two electrodes which are shorted when a drop of rain hits it. In short, I’ve done small experiments to confirm that I can get a few mV and enough to get me excited but not much more. I know I’m not going to get much power out of this, but I’ve been able to charge a NiMH battery a few mV by being a quarter mile from an AM radio station with my antenna setup. It would be fascinating to me if I could store these small charges in something like a 5V USB power brick eventually.\n
    \n
    The smarter idea would be for me to harvest energy with the sun or from the wind or a stream. I’m tinkering with this as well, but larger amounts of electricity scare me for right now. I guess I’ve seen enough experimental sources of harvesting electricity and I’ve gotten the itch to invent, which is a dangerous itch for a newbie like me to have.\n
    \n
    The best advice I’ve seen online (ok, it was ChatGPT) is that it’s just not worth it to work with such small amounts of electricity, because the equipment required is too expensive and sophisticated (e.g, devices to read the charge of a capacitor without discharging it) to make anything that’s efficient enough to be worthwhile. Would you agree? Do you know of some other fascinating source of gathering electricity that I should also waste lots of time on?\n
    \n
    I just have all these electronic components and magnets and when I move them together the numbers on multimeter get bigger. it’s neat.
    """
  +type: "article"
  +lang: "en"
  +isOc: false
  +hasEmbed: false
  +commentCount: 43
  +favouriteCount: 39
  +score: 0
  +isAdult: false
  +sticky: false
  +lastActive: DateTime @1692697842 {#1566
    date: 2023-08-22 11:50:42.0 +02:00
  }
  +ip: null
  +adaAmount: 0
  +tags: null
  +mentions: null
  +comments: Doctrine\ORM\PersistentCollection {#1720 …}
  +votes: Doctrine\ORM\PersistentCollection {#1717 …}
  +reports: Doctrine\ORM\PersistentCollection {#1740 …}
  +favourites: Doctrine\ORM\PersistentCollection {#1629 …}
  +notifications: Doctrine\ORM\PersistentCollection {#1618 …}
  +badges: Doctrine\ORM\PersistentCollection {#1687 …}
  +children: [
    App\Entity\EntryComment {#1709
      +user: App\Entity\User {#264 …}
      +entry: Proxies\__CG__\App\Entity\Entry {#1582 …2}
      +magazine: Proxies\__CG__\App\Entity\Magazine {#1574 …}
      +image: null
      +parent: Proxies\__CG__\App\Entity\EntryComment {#1654 …}
      +root: Proxies\__CG__\App\Entity\EntryComment {#1650 …}
      +body: "Yes, the circuit in an rfid device gets its power by harvesting energy from the RF source it’s being illuminated with. A smaller version of wireless power transmission first invented by Tesla (the person, not the car company). Similar principles were used in the Cold War for surreptitious listening devices. Neat tech."
      +lang: "en"
      +isAdult: false
      +favouriteCount: 6
      +score: 0
      +lastActive: DateTime @1692386205 {#1435
        date: 2023-08-18 21:16:45.0 +02:00
      }
      +ip: null
      +tags: null
      +mentions: [
        "@rarely@sh.itjust.works"
        "@usrtrv@lemmy.ml"
      ]
      +children: Doctrine\ORM\PersistentCollection {#1671 …}
      +nested: Doctrine\ORM\PersistentCollection {#1667 …}
      +votes: Doctrine\ORM\PersistentCollection {#1670 …}
      +reports: Doctrine\ORM\PersistentCollection {#1678 …}
      +favourites: Doctrine\ORM\PersistentCollection {#1551 …}
      +notifications: Doctrine\ORM\PersistentCollection {#1586 …}
      -id: 26202
      -bodyTs: "'car':38 'circuit':3 'cold':46 'compani':39 'devic':7,51 'energi':13 'first':30 'get':8 'harvest':12 'illumin':21 'invent':31 'listen':50 'neat':52 'person':35 'power':10,28 'principl':41 'rf':16 'rfid':6 'similar':40 'smaller':24 'sourc':17 'surreptiti':49 'tech':53 'tesla':33 'transmiss':29 'use':43 'version':25 'war':47 'wireless':27 'yes':1"
      +ranking: 0
      +commentCount: 0
      +upVotes: 0
      +downVotes: 0
      +visibility: "visible             "
      +apId: "https://programming.dev/comment/2094222"
      +editedAt: null
      +createdAt: DateTimeImmutable @1692386205 {#1438
        date: 2023-08-18 21:16:45.0 +02:00
      }
      +"title": 26202
    }
  ]
  -id: 1870
  -titleTs: "'amount':4 'electr':6 'errand':9 'fool':8 'harvest':2 'small':3"
  -bodyTs: "'5v':175 'abl':135 'advic':250 'agre':308 'also':323 'amount':25,209,272 'antenna':59,156 'anyth':298 'batteri':140 'becom':17 'beginn':5 'best':249 'bigger':349 'brick':178 'capacitor':292 'charg':137,170,289 'chatgpt':258 'close':49 'collect':23 'compon':335 'confirm':100 'could':166 'danger':239 'devic':285 'discharg':294 'done':96 'drop':87 'e.g':284 'effici':301 'electr':27,211,227,274,319 'electrod':81 'electron':7,334 'energi':36,75,189 'enough':109,222,302 'equip':277 'eventu':179 'excit':113 'expens':281 'experi':98 'experiment':223 'extract':42 'fascin':161,315 'fixat':18 'free':35 'fulli':13 'gather':318 'get':66,104,111,125,348 'go':123 'gotten':231 'guess':218 'harvest':188,226 'hit':90 'idea':21,182 'instead':37 'interest':29 'invent':235 'itch':233,240 'kinet':74 'know':119,311 'larger':208 'like':41,173,244 'loop':58 'lot':325 'm':121,201 'magnet':337 'make':297 'mean':34,39 'mile':148 'move':341 'much':116,126 'multimet':347 'mv':45,69,107,143 'neat':352 'newbi':243 'nimh':139 'number':345 'ok':255 'onlin':254 'phase':61 'power':127,177 'ptfe':77 'quarter':147 'question':2 'radio':53,152 'rain':72,89 'read':287 'reason':9 'requir':278 'right':215 'scare':212 'seen':221,253 'serious':1 'setup':157 'short':84,93 'small':24,97,169,271 'smarter':181 'someth':172 'sophist':283 'sourc':30,224,316 'station':153 'store':167 'stream':199 'sun':192 'thing':40 'time':327 'tinker':202 'togeth':343 'tower':54 'tune':57 'two':56,80 'understand':14 'usb':176 'use':55,79 've':95,133,220,230,252 'wast':324 'well':206 'wind':196 'without':293 'work':268 'worth':265 'worthwhil':305 'would':159,183,306"
  +cross: false
  +upVotes: 0
  +downVotes: 0
  +ranking: 1692469967
  +visibility: "visible             "
  +apId: "https://sh.itjust.works/post/3150095"
  +editedAt: null
  +createdAt: DateTimeImmutable @1692383567 {#1696
    date: 2023-08-18 20:32:47.0 +02:00
  }
  +__isInitialized__: true
   …2
}
 
"Scheb\TwoFactorBundle\Security\Authorization\Voter\TwoFactorInProgressVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\EntryCommentVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\EntryVoter"
 ACCESS DENIED 
"App\Security\Voter\MagazineVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\MessageThreadVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\MessageVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\NotificationVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\OAuth2UserConsentVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\PostCommentVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\PostVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\UserVoter"
 ACCESS ABSTAIN
Show voter details
3 DENIED edit 
Proxies\__CG__\App\Entity\Entry {#1582
  +user: Proxies\__CG__\App\Entity\User {#2459 …}
  +magazine: Proxies\__CG__\App\Entity\Magazine {#1574 …}
  +image: null
  +domain: Proxies\__CG__\App\Entity\Domain {#1718 …}
  +slug: "Is-harvesting-small-amounts-of-electricity-a-fools-errand"
  +title: "Is “harvesting” small amounts of electricity a fools errand?"
  +url: null
  +body: """
    Serious question from a beginner in electronics. For reasons I do not fully understand, I have become fixated on the idea of collecting small amounts of electricity from “interesting” sources. I don’t mean “free energy”, instead, I mean things like extracting a few mV from being so close to a AM radio tower using two tuned loop antennas in phase with each other, or getting a few mV from the rain’s kinetic energy with PTFE and using two electrodes which are shorted when a drop of rain hits it. In short, I’ve done small experiments to confirm that I can get a few mV and enough to get me excited but not much more. I know I’m not going to get much power out of this, but I’ve been able to charge a NiMH battery a few mV by being a quarter mile from an AM radio station with my antenna setup. It would be fascinating to me if I could store these small charges in something like a 5V USB power brick eventually.\n
    \n
    The smarter idea would be for me to harvest energy with the sun or from the wind or a stream. I’m tinkering with this as well, but larger amounts of electricity scare me for right now. I guess I’ve seen enough experimental sources of harvesting electricity and I’ve gotten the itch to invent, which is a dangerous itch for a newbie like me to have.\n
    \n
    The best advice I’ve seen online (ok, it was ChatGPT) is that it’s just not worth it to work with such small amounts of electricity, because the equipment required is too expensive and sophisticated (e.g, devices to read the charge of a capacitor without discharging it) to make anything that’s efficient enough to be worthwhile. Would you agree? Do you know of some other fascinating source of gathering electricity that I should also waste lots of time on?\n
    \n
    I just have all these electronic components and magnets and when I move them together the numbers on multimeter get bigger. it’s neat.
    """
  +type: "article"
  +lang: "en"
  +isOc: false
  +hasEmbed: false
  +commentCount: 43
  +favouriteCount: 39
  +score: 0
  +isAdult: false
  +sticky: false
  +lastActive: DateTime @1692697842 {#1566
    date: 2023-08-22 11:50:42.0 +02:00
  }
  +ip: null
  +adaAmount: 0
  +tags: null
  +mentions: null
  +comments: Doctrine\ORM\PersistentCollection {#1720 …}
  +votes: Doctrine\ORM\PersistentCollection {#1717 …}
  +reports: Doctrine\ORM\PersistentCollection {#1740 …}
  +favourites: Doctrine\ORM\PersistentCollection {#1629 …}
  +notifications: Doctrine\ORM\PersistentCollection {#1618 …}
  +badges: Doctrine\ORM\PersistentCollection {#1687 …}
  +children: [
    App\Entity\EntryComment {#1709
      +user: App\Entity\User {#264 …}
      +entry: Proxies\__CG__\App\Entity\Entry {#1582 …2}
      +magazine: Proxies\__CG__\App\Entity\Magazine {#1574 …}
      +image: null
      +parent: Proxies\__CG__\App\Entity\EntryComment {#1654 …}
      +root: Proxies\__CG__\App\Entity\EntryComment {#1650 …}
      +body: "Yes, the circuit in an rfid device gets its power by harvesting energy from the RF source it’s being illuminated with. A smaller version of wireless power transmission first invented by Tesla (the person, not the car company). Similar principles were used in the Cold War for surreptitious listening devices. Neat tech."
      +lang: "en"
      +isAdult: false
      +favouriteCount: 6
      +score: 0
      +lastActive: DateTime @1692386205 {#1435
        date: 2023-08-18 21:16:45.0 +02:00
      }
      +ip: null
      +tags: null
      +mentions: [
        "@rarely@sh.itjust.works"
        "@usrtrv@lemmy.ml"
      ]
      +children: Doctrine\ORM\PersistentCollection {#1671 …}
      +nested: Doctrine\ORM\PersistentCollection {#1667 …}
      +votes: Doctrine\ORM\PersistentCollection {#1670 …}
      +reports: Doctrine\ORM\PersistentCollection {#1678 …}
      +favourites: Doctrine\ORM\PersistentCollection {#1551 …}
      +notifications: Doctrine\ORM\PersistentCollection {#1586 …}
      -id: 26202
      -bodyTs: "'car':38 'circuit':3 'cold':46 'compani':39 'devic':7,51 'energi':13 'first':30 'get':8 'harvest':12 'illumin':21 'invent':31 'listen':50 'neat':52 'person':35 'power':10,28 'principl':41 'rf':16 'rfid':6 'similar':40 'smaller':24 'sourc':17 'surreptiti':49 'tech':53 'tesla':33 'transmiss':29 'use':43 'version':25 'war':47 'wireless':27 'yes':1"
      +ranking: 0
      +commentCount: 0
      +upVotes: 0
      +downVotes: 0
      +visibility: "visible             "
      +apId: "https://programming.dev/comment/2094222"
      +editedAt: null
      +createdAt: DateTimeImmutable @1692386205 {#1438
        date: 2023-08-18 21:16:45.0 +02:00
      }
      +"title": 26202
    }
  ]
  -id: 1870
  -titleTs: "'amount':4 'electr':6 'errand':9 'fool':8 'harvest':2 'small':3"
  -bodyTs: "'5v':175 'abl':135 'advic':250 'agre':308 'also':323 'amount':25,209,272 'antenna':59,156 'anyth':298 'batteri':140 'becom':17 'beginn':5 'best':249 'bigger':349 'brick':178 'capacitor':292 'charg':137,170,289 'chatgpt':258 'close':49 'collect':23 'compon':335 'confirm':100 'could':166 'danger':239 'devic':285 'discharg':294 'done':96 'drop':87 'e.g':284 'effici':301 'electr':27,211,227,274,319 'electrod':81 'electron':7,334 'energi':36,75,189 'enough':109,222,302 'equip':277 'eventu':179 'excit':113 'expens':281 'experi':98 'experiment':223 'extract':42 'fascin':161,315 'fixat':18 'free':35 'fulli':13 'gather':318 'get':66,104,111,125,348 'go':123 'gotten':231 'guess':218 'harvest':188,226 'hit':90 'idea':21,182 'instead':37 'interest':29 'invent':235 'itch':233,240 'kinet':74 'know':119,311 'larger':208 'like':41,173,244 'loop':58 'lot':325 'm':121,201 'magnet':337 'make':297 'mean':34,39 'mile':148 'move':341 'much':116,126 'multimet':347 'mv':45,69,107,143 'neat':352 'newbi':243 'nimh':139 'number':345 'ok':255 'onlin':254 'phase':61 'power':127,177 'ptfe':77 'quarter':147 'question':2 'radio':53,152 'rain':72,89 'read':287 'reason':9 'requir':278 'right':215 'scare':212 'seen':221,253 'serious':1 'setup':157 'short':84,93 'small':24,97,169,271 'smarter':181 'someth':172 'sophist':283 'sourc':30,224,316 'station':153 'store':167 'stream':199 'sun':192 'thing':40 'time':327 'tinker':202 'togeth':343 'tower':54 'tune':57 'two':56,80 'understand':14 'usb':176 'use':55,79 've':95,133,220,230,252 'wast':324 'well':206 'wind':196 'without':293 'work':268 'worth':265 'worthwhil':305 'would':159,183,306"
  +cross: false
  +upVotes: 0
  +downVotes: 0
  +ranking: 1692469967
  +visibility: "visible             "
  +apId: "https://sh.itjust.works/post/3150095"
  +editedAt: null
  +createdAt: DateTimeImmutable @1692383567 {#1696
    date: 2023-08-18 20:32:47.0 +02:00
  }
  +__isInitialized__: true
   …2
}
 
"Scheb\TwoFactorBundle\Security\Authorization\Voter\TwoFactorInProgressVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\EntryCommentVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\EntryVoter"
 ACCESS DENIED 
"App\Security\Voter\MagazineVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\MessageThreadVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\MessageVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\NotificationVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\OAuth2UserConsentVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\PostCommentVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\PostVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\UserVoter"
 ACCESS ABSTAIN
Show voter details
4 DENIED moderate 
Proxies\__CG__\App\Entity\Entry {#1582
  +user: Proxies\__CG__\App\Entity\User {#2459 …}
  +magazine: Proxies\__CG__\App\Entity\Magazine {#1574 …}
  +image: null
  +domain: Proxies\__CG__\App\Entity\Domain {#1718 …}
  +slug: "Is-harvesting-small-amounts-of-electricity-a-fools-errand"
  +title: "Is “harvesting” small amounts of electricity a fools errand?"
  +url: null
  +body: """
    Serious question from a beginner in electronics. For reasons I do not fully understand, I have become fixated on the idea of collecting small amounts of electricity from “interesting” sources. I don’t mean “free energy”, instead, I mean things like extracting a few mV from being so close to a AM radio tower using two tuned loop antennas in phase with each other, or getting a few mV from the rain’s kinetic energy with PTFE and using two electrodes which are shorted when a drop of rain hits it. In short, I’ve done small experiments to confirm that I can get a few mV and enough to get me excited but not much more. I know I’m not going to get much power out of this, but I’ve been able to charge a NiMH battery a few mV by being a quarter mile from an AM radio station with my antenna setup. It would be fascinating to me if I could store these small charges in something like a 5V USB power brick eventually.\n
    \n
    The smarter idea would be for me to harvest energy with the sun or from the wind or a stream. I’m tinkering with this as well, but larger amounts of electricity scare me for right now. I guess I’ve seen enough experimental sources of harvesting electricity and I’ve gotten the itch to invent, which is a dangerous itch for a newbie like me to have.\n
    \n
    The best advice I’ve seen online (ok, it was ChatGPT) is that it’s just not worth it to work with such small amounts of electricity, because the equipment required is too expensive and sophisticated (e.g, devices to read the charge of a capacitor without discharging it) to make anything that’s efficient enough to be worthwhile. Would you agree? Do you know of some other fascinating source of gathering electricity that I should also waste lots of time on?\n
    \n
    I just have all these electronic components and magnets and when I move them together the numbers on multimeter get bigger. it’s neat.
    """
  +type: "article"
  +lang: "en"
  +isOc: false
  +hasEmbed: false
  +commentCount: 43
  +favouriteCount: 39
  +score: 0
  +isAdult: false
  +sticky: false
  +lastActive: DateTime @1692697842 {#1566
    date: 2023-08-22 11:50:42.0 +02:00
  }
  +ip: null
  +adaAmount: 0
  +tags: null
  +mentions: null
  +comments: Doctrine\ORM\PersistentCollection {#1720 …}
  +votes: Doctrine\ORM\PersistentCollection {#1717 …}
  +reports: Doctrine\ORM\PersistentCollection {#1740 …}
  +favourites: Doctrine\ORM\PersistentCollection {#1629 …}
  +notifications: Doctrine\ORM\PersistentCollection {#1618 …}
  +badges: Doctrine\ORM\PersistentCollection {#1687 …}
  +children: [
    App\Entity\EntryComment {#1709
      +user: App\Entity\User {#264 …}
      +entry: Proxies\__CG__\App\Entity\Entry {#1582 …2}
      +magazine: Proxies\__CG__\App\Entity\Magazine {#1574 …}
      +image: null
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      Serious question from a beginner in electronics. For reasons I do not fully understand, I have become fixated on the idea of collecting small amounts of electricity from “interesting” sources. I don’t mean “free energy”, instead, I mean things like extracting a few mV from being so close to a AM radio tower using two tuned loop antennas in phase with each other, or getting a few mV from the rain’s kinetic energy with PTFE and using two electrodes which are shorted when a drop of rain hits it. In short, I’ve done small experiments to confirm that I can get a few mV and enough to get me excited but not much more. I know I’m not going to get much power out of this, but I’ve been able to charge a NiMH battery a few mV by being a quarter mile from an AM radio station with my antenna setup. It would be fascinating to me if I could store these small charges in something like a 5V USB power brick eventually.\n
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      The smarter idea would be for me to harvest energy with the sun or from the wind or a stream. I’m tinkering with this as well, but larger amounts of electricity scare me for right now. I guess I’ve seen enough experimental sources of harvesting electricity and I’ve gotten the itch to invent, which is a dangerous itch for a newbie like me to have.\n
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      \n
      I just have all these electronic components and magnets and when I move them together the numbers on multimeter get bigger. it’s neat.
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     …2
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      Serious question from a beginner in electronics. For reasons I do not fully understand, I have become fixated on the idea of collecting small amounts of electricity from “interesting” sources. I don’t mean “free energy”, instead, I mean things like extracting a few mV from being so close to a AM radio tower using two tuned loop antennas in phase with each other, or getting a few mV from the rain’s kinetic energy with PTFE and using two electrodes which are shorted when a drop of rain hits it. In short, I’ve done small experiments to confirm that I can get a few mV and enough to get me excited but not much more. I know I’m not going to get much power out of this, but I’ve been able to charge a NiMH battery a few mV by being a quarter mile from an AM radio station with my antenna setup. It would be fascinating to me if I could store these small charges in something like a 5V USB power brick eventually.\n
      \n
      The smarter idea would be for me to harvest energy with the sun or from the wind or a stream. I’m tinkering with this as well, but larger amounts of electricity scare me for right now. I guess I’ve seen enough experimental sources of harvesting electricity and I’ve gotten the itch to invent, which is a dangerous itch for a newbie like me to have.\n
      \n
      The best advice I’ve seen online (ok, it was ChatGPT) is that it’s just not worth it to work with such small amounts of electricity, because the equipment required is too expensive and sophisticated (e.g, devices to read the charge of a capacitor without discharging it) to make anything that’s efficient enough to be worthwhile. Would you agree? Do you know of some other fascinating source of gathering electricity that I should also waste lots of time on?\n
      \n
      I just have all these electronic components and magnets and when I move them together the numbers on multimeter get bigger. it’s neat.
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      Serious question from a beginner in electronics. For reasons I do not fully understand, I have become fixated on the idea of collecting small amounts of electricity from “interesting” sources. I don’t mean “free energy”, instead, I mean things like extracting a few mV from being so close to a AM radio tower using two tuned loop antennas in phase with each other, or getting a few mV from the rain’s kinetic energy with PTFE and using two electrodes which are shorted when a drop of rain hits it. In short, I’ve done small experiments to confirm that I can get a few mV and enough to get me excited but not much more. I know I’m not going to get much power out of this, but I’ve been able to charge a NiMH battery a few mV by being a quarter mile from an AM radio station with my antenna setup. It would be fascinating to me if I could store these small charges in something like a 5V USB power brick eventually.\n
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      The smarter idea would be for me to harvest energy with the sun or from the wind or a stream. I’m tinkering with this as well, but larger amounts of electricity scare me for right now. I guess I’ve seen enough experimental sources of harvesting electricity and I’ve gotten the itch to invent, which is a dangerous itch for a newbie like me to have.\n
      \n
      The best advice I’ve seen online (ok, it was ChatGPT) is that it’s just not worth it to work with such small amounts of electricity, because the equipment required is too expensive and sophisticated (e.g, devices to read the charge of a capacitor without discharging it) to make anything that’s efficient enough to be worthwhile. Would you agree? Do you know of some other fascinating source of gathering electricity that I should also waste lots of time on?\n
      \n
      I just have all these electronic components and magnets and when I move them together the numbers on multimeter get bigger. it’s neat.
      """
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  +body: "Yes, the circuit in an rfid device gets its power by harvesting energy from the RF source it’s being illuminated with. A smaller version of wireless power transmission first invented by Tesla (the person, not the car company). Similar principles were used in the Cold War for surreptitious listening devices. Neat tech."
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