More work on the 2-pin RGB LED using an Arduino.
Pulsed VCC controlled RGB LED strip by Ghlargh: https://youtu.be/iuZZxOvY9Ls

By Julian

Youtuber, shed dweller, solar charge controller aficionado

11 thoughts on “Update: mystery two pin rgb led – pulse controlled”
  1. Avataaar/Circle Created with python_avatars keepitkush 520 says:

    Is there a way to slowly step down the voltage to make it change slower?

  2. Avataaar/Circle Created with python_avatars Tom Wall says:

    Question – I've got a toy with one of these LEDs. Can I replace one of these pulse controlled RGB LEDs with a solid white LED diode? Or will the pulsing the circuit is creating destroy the white LED or cause a fire hazard?

  3. Avataaar/Circle Created with python_avatars Till O'Rrly says:

    So 6 years later:

    Are those LED somewhere available and an Arduino lib to control them?

  4. Avataaar/Circle Created with python_avatars The Wookster says:

    I have adhd, and am a very green, very much still learning, simple circuit hobbyist.. It makes it hard to focus sometimes, but enthusiasm provides motivation where willpower can't.

    That was to explain why I noticed that in the reflection of your oscilloscope screen, you can see a filtered series of each light that is dim enough to clearly make out the combinations that it makes! I'm not sure if you were aware of it being so visible to us, but it was a cool thing to be able to watch and it not be so bright it washes out the visibility.

    Thanks for the video! I just bought 50 of these on aliexpress, and I was wondering how to use them.

    I don't have any programming knowledge or skills, but I'm sure there is a way to control it manually.

  5. Avataaar/Circle Created with python_avatars ChayD says:

    2021/2022 and they appear to have come up with an even better version of these that are SMD and sort of addressable in that I think some of the leds can be programmed to ignore a certain number of pulses then go through their RGB sequence. With some judicious bit banging you can do some basic sequences and chases. Not entirely sure how they've managed it as I've had no time to reverse engineer them, but certainly looks interesting.

  6. Avataaar/Circle Created with python_avatars John Ullrey says:

    Found this video, because was wondering if there was a reliable method of changing to color so as to use it as a warning light on an electronics project. It looks like I would have to cycle through each color and stop on the color I want to display.

  7. Avataaar/Circle Created with python_avatars K. Chris Caldwell says:

    What type of clay is that? If it is even clay. Oh, and thanks for the video.

  8. Avataaar/Circle Created with python_avatars Siri Fail says:

    Please explain WHY youโ€™re using two โ€œcoin cellโ€ CR2032 batteries and why, while youโ€™d โ€œnormallyโ€ burn out the LED, but the CR2032 have such high internal impedance, they canโ€™t put out enough current to even burn out this LED?

  9. Avataaar/Circle Created with python_avatars DjResR says:

    Color output looks like from a 3-output binary counter: blue 1, green 2 and red 4._

  10. Avataaar/Circle Created with python_avatars Mike Dean says:

    Interesting, just bought a new Christmas tree with prestrung leds. It has this type of led, multilple colors with 2 pin leds.

  11. Avataaar/Circle Created with python_avatars Martin nxs says:

    you may try with 280ms entire string ๐Ÿ˜€

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