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RP2040 Macropad LEDs ESDead?
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RP2040 Macropad LEDs ESDead?

by IdleChris on Thu May 26, 2022 12:04 pm

I've had my Macropad for a few days now and have had success getting Circuit Python running and using/modifying Phillip Burgess HotKeys scripts and all the NeoPixels worked more or less fine. I found that I needed to call macropad.pixels.show() twice for it to actually update the 12th LED properly. Hadn't had time to investigate why this might be happening before... while moving the Macropad I had an ESD discharge on the bottom right corner and now all but the top left #1 and #2 NeoPixels are dead. None of the 3 leds on each of the other 10 NeoPixels light up any more. I tried controlling them using the REPL and command that work 100% fine for #1 and #2 do nothing for the rest.

Looking at the schematics, I see that the DataIn/DataOut chain actually goes from #3>#2>#1>#4 and so on, so I'm a little surprised that #3 is dead while 1 and 2 are fine. I guess I popped just the LEDs and not the controller IC?

I ordered some new NeoPixels and will do a swap. I'm curious if this is a common problem with the Macropad board?

Thanks,
Chris

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Re: RP2040 Macropad LEDs ESDead?

by dastels on Thu May 26, 2022 2:12 pm

I'd start by closely inspecting the soldering on the 4 pins of each neopixel and touch up any that look suspect.

Dave

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Re: RP2040 Macropad LEDs ESDead?

by IdleChris on Thu May 26, 2022 9:39 pm

Good idea, thanks for the tip. That might also explain the "need to send 2 updates" to get it to change as well. I'll report back when I have a chance to troubleshoot further.

--Chris

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Re: RP2040 Macropad LEDs ESDead?

by IdleChris on Thu Jun 02, 2022 11:31 am

Well, the NeoPixels I ordered from Adafruit (WS2812-2020) were the wrong form-factor/footprint for the MACROPad. I'm not sure I'm finding the correct form factor for sale. Anyone know what the correct replacement parts would be for me to order?

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Re: RP2040 Macropad LEDs ESDead?

by dastels on Thu Jun 02, 2022 1:05 pm

I believe these are what you want https://www.adafruit.com/product/4960.

Dave

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Re: RP2040 Macropad LEDs ESDead?

by IdleChris on Thu Jun 02, 2022 1:28 pm

Bingo, thanks!

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Please be positive and constructive with your questions and comments.