Developer Jan Ostman let us know that he’s released source code for an Arduino-based Minipops 7 clone.
The Korg KEIO Minipops was featured prominently in Jean Michel Jarre’s classic electronic album, Oxygène.
Ostman says that the code should work unmodified on any Arduino.
Tempo and 16 pattern select CV input.
8 drum mute inputs.
Run/stop input and clock/reset outputs.
You can easily add a CD4067 AMUX chip for driving an analog sequencer in parallel with the rhythm pattern.
See Ostman’s site for additional demos and the source code.
If you give this a try, let us know about your project in the comments!