[Peter Brinkman] is working on a circuit that makes it easy to interface MIDI and Bluetooth devices. His target hardware has been a MIDI compatible keyboard and an Android phone. He was inspired ...

The controller can be powered via USB or AA batteries and can be hooked up to your computer via USB or wirelessly through Bluetooth MIDI. On the unit's side you'll also find a TRS MIDI output and ...

On the hardware side, [Brett] used a 64 button Arduino shield and a Sparkfun MIDI shield. The RGB LEDs behind each button are controlled via MIDI sysex messages generated outside the instrument ...