Merged my original MIDI interface design with @johnedgarpark‘s DIN connector-on-a-Feather-protoboard design to produce a Classic MIDI FeatherWing board via @oshpark . Supports DIN-5 and 3.5mm Type B jacks. Tested with CircuitPython 4.1.0beta1.
The Classic MIDI FeatherWing interface is an Adafruit Feather-compatible module. Deriving its power from the host Feather’s 3.3V power, the interface converts incoming and outgoing classic MIDI current-loop input and output to Feather UART (RX and TX) logic pins.
The wing provides on-board input and output footprints for 3.5mm TRS Type B and DIN-5 connectors while maintaining the Feather dimensional format, thanks to John Park’s inspirational Feather MIDI Nub design (Twitter: @johnedgarpark). The MIDI input is an optically-isolated connection. MIDI output is buffered and current-limited. On-board receive (RX) and transmit (TX) LEDs indicate incoming and outgoing signals.
The Classic MIDI interface was tested with CircuitPython version 4.1.0 beta 1 and earlier releases. Example code is provided in the repository. Additional code examples can be found within the adafruit__midi CircuitPython examples distribution.
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