1-in 6-out】The MIDI Thru-6 Box provide 1 MIDI in and 6 MIDI out midi interface. Smooth MIDI signal ... which is power by 5V DC USB power supply. It can works with most MIDI products.

The Pi receives MIDI commands over the USB interface, and outputs sound via a Pimoroni Audio Shim. Effectively, the result is a single-channel DX7 synth that plugs in via USB; or eight channels if ...

A Teensy 3.6 is used to run the show, acting as a USB-MIDI interface so the toy can be controlled by music software like Abelton. It’s connected to the toy’s buttons through a multiplexer.