I'm in the midst of installing a variety of ESP32-based interactive sculptures. All seven different designs worked in my studio; on-site, 2 of them are exhibiting very similar problems that seem to be power-supply related (the other 5 are just fine). All pieces use a VS1053 breakout to render Midi; both the problem children failed to sound the startup note sequence. Both are powered via VIN by 5V power supplies (10A for one, 1.5 for the other). When I plug either of them into my laptop USB, they work just fine. I've measured voltage on the 10A supply, and it reads 5V. Can anyone suggest things I should look at to troubleshoot this and/or possible quick fixes. Thanks!
just to clarify, I meant VIN on the ESP32
Which ESP32?
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Please post schematics.
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Doit dev kit
I would but each is different, and way too complicated. Hoping just for some generic ideas
What else needs power, and exactly how do those parts get power?
What is different about the two that don't work to the five that do?
Can you see some reason why two don't work and five work? Are there any parts that may be off specification or broken enough that you might discover this by swapping some things around wildly in calm, careful experimentation?
HTH
a7
@Elby That's nice for starters, but there are at least 3 variants of that. How many pins? 30, 32, 38?
Guessing here with a lack of information, but there's probably a voltage regulator behind VIN and it won't work properly with a 5V supply. The ESP32 boards aren't standardized, so it's hard to say what an appropriate voltage would be. Consult whatever documentation came with the board.
A quick test would be to try using a phone charger at the USB input. I suspect that will probably work.
30 pin
That's what I'm getting at with the exact version questions. It's important to know exactly which version is in play.
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