Build a simple drum machine with Arduino: Circuit, code, enclosure and instructions to build your own sequencer drum machine with Arduino Uno and Mozzi, S. A., Rodrigo, eBook - Amazon.com
My Drum Midi Arduino by jiban toro
Arduino – making a basic drum machine - Use Arduino for Projects
Build a simple drum machine with Arduino: Circuit, code, enclosure and instructions to build your own sequencer drum machine with Arduino Uno and Mozzi, S. A., Rodrigo, eBook - Amazon.com