They are connected to PC via USB. Can play any MIDI-track with some changes (only 4-channels - rhythm, bass,solo and drums). Also they are can work without PC. Inside - accumulators and control scheme (simple MIDI sequencer) with 4MB of memory. Some other video are in my YT-channel
That's awesome mate! Trully awesome! Mind hidding a floopy drive organ and building a robots big band ?
Cool. I was wondering what they were, the shaft looks like its part of a linear drive but it was so small I couldn't think what they could be used for. Are the notes determined purely by the speed of the motor or was there more factors?