An open source hardware design for type A (or standard nowadays) and B midiTRS in to serial adapter

Just stumbled upon this, the genius of it is amaizing.

Basically its a midiTRS in to serial circuit with optocouplers that supports both standards without switches or anything


Excellent, Nice catch.

Where is the same for MIDI out ?

I’m not sure that’s doable at all like this, “automagically”, however with a double pole switch you can easily achieve that i think

Here an explanation MIDI to TRS adapter with A/B switch – ranzee

In this reddit thread

MIDI out is easy if you have two UARTs available. Wire so TX on both UARTs goes to the midi output pins. Then you can enable / disable the UARTs via software.

so with the pi 4 and 5 this is probably fully feasible