This is detailed in the “(CA-033) MIDI 1.0 Electrical Specification Update ”: One thing to watch out for is that the Pi Pico has 3.3V signal levels, but there was a revision of the MIDI electrical specification that showed how to hook up a MIDI out port to 3.3V signals. If like me you find DIN connector pinouts confusing, then take a look at the MIDI Connections Cheat Sheet. Transmit (TX) is GP4, which is all I need for MIDI OUT. This is hooking up MIDI to the second UART port of the Raspberry Pi Pico, which can be found on GP4 and GP5 (pins 6 and 7). I could see the PCB flexing quite a lot when inserting and removing – so be careful, do it slowly, and try to lever it up by the plastic on the pins not the PCB itself if you can. That is a lot of pins to push into a breadboard, and even more when it comes to trying to pull it off again. ![]() 5-pin 180 DIN socket, 10Ω and 33Ω resistorsįirst a note of warning. ![]()
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