I’m working on a project to integrate a Ksoloti Core into my 5U/MU modular synthesizer, and I’d like to build the hardware interface properly.
The final goal is to build Ksoloti as a real 5U module, able to interact safely with the rest of the modular system.
I can solder and assemble a circuit following a clear schematic/BOM, but I am not confident enough to design or validate the analog electronics myself.
My 5U system uses ±15 V power rails (Corsynth C100 PSU).
I would like to:
5U CVout > Ksoloti CVin
5U gate out > Ksoloti gate in
Powering Ksoloti from the 5U system
I hope someone here can help me with this project. I know I’m asking quite a few questions, but I’m approaching this as a beginner in electronics and I’m a little worried about damaging the Ksoloti. Any help in verifying the CV input, trigger input and power supply circuits would be greatly appreciated.
Don’t wire 5U CV or gates straight to the Core. For CV inputs, start with a high-value input resistor, a divider to bring the 5U range down to the Core’s documented ADC range, and Schottky clamps to 0V and its ADC supply rail. For gates, an optocoupler or comparator with input current limiting gives clean, safer levels; a transistor inverter works if common ground is acceptable. Power the Core from +15V only through a fused, reverse-protected regulator/filter—not ±15V directly—and star-route grounds. Breadboard one channel first.
I’d also say check out the Big Genes schematic on ksoloti.github.io. Most of the circuits there will work on +/-15 same like +/-12 but all those that use a reference voltage will need some scaling. Let me know what in particular you’d like to design (also what voltage ranges the CV’s would expect) and I’ll know what circuit would be suitable.