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   myrmepropagandist (futurebird@sauropods.win)'s status on Saturday, 09-Dec-2023 23:59:01 JST myrmepropagandist

   Is there a simple way to count how many LEDs are using the wireless power from the ring?

   • Embed this notice
     🎓 Doc Freemo :jpf: 🇳🇱 (freemo@qoto.org)'s status on Saturday, 09-Dec-2023 23:58:54 JST 🎓 Doc Freemo :jpf: 🇳🇱

     in reply to

     • Trammell Hudson
     • Stephan Matthiesen

     @futurebird

     No you could in fact use a LED as an element in your rectivfier and then place the current limiting resistor across it.

     The issue with that is the diode would only be lit up half the cycle and the energy wasted on the other half of the cycle. The result would be the LED would be half bright and half energy wasted as heat.

     That said it would work and the led would be smooth as the frequency is likely high enough not to be evident directly.

     @th @StephanMatthiesen

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     myrmepropagandist (futurebird@sauropods.win)'s status on Saturday, 09-Dec-2023 23:58:56 JST myrmepropagandist

     in reply to

     • Trammell Hudson
     • Stephan Matthiesen

     @th @StephanMatthiesen To change from AC to DC more smoothly otherwise they would get slowly damaged i think??

   • Embed this notice
     Trammell Hudson (th@social.v.st)'s status on Saturday, 09-Dec-2023 23:58:57 JST Trammell Hudson

     in reply to

     • Stephan Matthiesen

     @futurebird @StephanMatthiesen what’s the reason for the bridge rectifier since the D in LED also stands for diode?

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     myrmepropagandist (futurebird@sauropods.win)'s status on Saturday, 09-Dec-2023 23:58:58 JST myrmepropagandist

     in reply to

     • Stephan Matthiesen

     @StephanMatthiesen Yes, that’s correct: they use the magnetic field projected by the AC in the ring coil to induce their own AC in a tiny coil hidden under each LED package— then a precious little group of square-dancing diodes rectifies the current back in to much more respectable DC which lights up the diode. (as much i understand it it so far)

   • Embed this notice
     Stephan Matthiesen (stephanmatthiesen@troet.cafe)'s status on Saturday, 09-Dec-2023 23:58:59 JST Stephan Matthiesen

     in reply to

     @futurebird
     Sorry if I misunderstand this, but if they don't have any other power source, then all the ones that light up get their power from the ring, don't they?

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     🎓 Doc Freemo :jpf: 🇳🇱 (freemo@qoto.org)'s status on Sunday, 10-Dec-2023 00:04:02 JST 🎓 Doc Freemo :jpf: 🇳🇱

     in reply to

     • Stephan Matthiesen

     @futurebird

     Since this is the case, as you state (and more or less I agree it is correcT)... I dont understand your question. Do you not already know the answer to how many? You count the ones that give off light.... I feel like im misunderstanding the question?

     @StephanMatthiesen

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     🎓 Doc Freemo :jpf: 🇳🇱 (freemo@qoto.org)'s status on Sunday, 10-Dec-2023 00:22:36 JST 🎓 Doc Freemo :jpf: 🇳🇱

     in reply to

     • raimoncoding

     @raimoncoding

     It is exactly the same thing we have when we charge a phone wireless. It is also how transformers work, and NFC chips get power (like your credit card).

     It only works at very short distances or at very low power.

     @futurebird

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     raimoncoding (raimoncoding@techhub.social)'s status on Sunday, 10-Dec-2023 00:22:41 JST raimoncoding

     in reply to

     @futurebird I didn’t knew there’s something like wireless power 😳

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     🎓 Doc Freemo :jpf: 🇳🇱 (freemo@qoto.org)'s status on Sunday, 10-Dec-2023 00:26:18 JST 🎓 Doc Freemo :jpf: 🇳🇱

     in reply to

     • Bernie Forcefully Does It

     @futurebird

     Drop in current wouldnt tell you anyway. Yes it varies, but you wouldnt be able to tell the difference between two leds farther away and one led closer in.

     If you specifically want to detect it through the main coil you cant do it without changing the design as far as I can think of.

     The simplest solution would be to make the individual devices resonant with the main coil but resonant at different frequences. That would give you something uniquely identifiable to potentially key in on.

     @BernieDoesIt

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     myrmepropagandist (futurebird@sauropods.win)'s status on Sunday, 10-Dec-2023 00:26:19 JST myrmepropagandist

     in reply to

     • Bernie Forcefully Does It

     @BernieDoesIt You would think by I haven’t found it yet. I don’t want to measure current— it’s a pain.

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     Bernie Forcefully Does It (berniedoesit@mstdn.social)'s status on Sunday, 10-Dec-2023 00:26:20 JST Bernie Forcefully Does It

     in reply to

     @futurebird There's got to be a drop in something that can be measured.

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     raimoncoding (raimoncoding@techhub.social)'s status on Sunday, 10-Dec-2023 14:36:03 JST raimoncoding

     in reply to

     • 🎓 Doc Freemo :jpf: 🇳🇱

     @freemo @futurebird Thanks for your explanation, very helpful.

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     🎓 Doc Freemo :jpf: 🇳🇱 (freemo@qoto.org)'s status on Sunday, 10-Dec-2023 14:36:03 JST 🎓 Doc Freemo :jpf: 🇳🇱

     in reply to

     • raimoncoding

     @raimoncoding happy to help, any time.