This video demonstrates sequencing the Gakken SX-150, a cheap DIY synth kit, using control voltages, in this case coming from a Novation BassStation.

via thelefthandedheroes:

The Gakken SX-150 stylus gets the CV and GATE information from the ribbon-like slider pad.

I just connected the Novation BassStation Rack CV and GATE out to the stylus and voilà! – have my MIDI controlled Gakken.

The cheapest way to do this is to cut a patch cable in half, took the plastic bits off the wire coming from the tips of the jacks, roll them together and stick the Gakken’s stylus into.
You may notice that it only works if the BassStation’s CV type set to ’00’ (Roland/Sequential/Arp) – because of the voltage .

Plug the Gakken SX’s out to a mixer rather than using the built in speaker – this is needed as the ground.

I believe this works with other MIDI-to-CV converters too.

This video is to show that it works, not a musical statement.

Have fun!