tauzero Posted March 12 Share Posted March 12 On 08/03/2024 at 19:37, AngryBanana said: I have 9V on VIN for this. That's not relevant to what comes out for MIDI on the GPIO pins. Just checked the specs and the I/O is 5V, so the 220R per leg is right. Good work spotting the Serial/Serial1 issue, that affects other Arduinos too. Quote Link to comment Share on other sites More sharing options...
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