The Zero line of Raspberry Pis are perfect for this use, as they draw less current and so can, under the right conditions, run off a computer’s USB port. The Pi receives MIDI commands over the ...

[TheSpodShed] decided to whip up a USB MIDI interface for the chip, with the help of the Arduino Pro Micro. The Arduino Pro Micro is a Sparkfun creation, using the ATmega32U4 microcontroller.