This thing is great fun, but annoyingly has a row of tiny mini jacks on the rear. I could never find enough little cables and adapters, so made this simple breakout panel with 1/4 inch jacks and proper MIDI / DIN sync sockets.
It's now a lot more usable and can easily be patched into the modular synth.
If you'd like to make your own Meatstep Pro, you can download the DXF drawings here.