Did you know you can use a QT Py RP2040 as a USB to Serial MIDI converter? The QT Py RP2040, running CircuitPython code, receives MIDI messages over USB and then sends the messages out over serial UART. You can build small add-on boards, or friends, for TRS-A, TRS-B and DIN-5 MIDI out circuits that plug directly into the QT Py RP2040.
This concept was inspired by Sandy Macdonald on Twitter. It makes for a compact and simple solution for interfacing hardware MIDI devices with USB.
This project will show you how build simple QT Py add-on boards for USB to serial MIDI conversion.
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