This is my CD4069ube based Twin T kick drum module for my modular synth.
I fixed a couple of things from the schematic in the link below! I forgot a 10uF capacitor in the diode clipping circuit and forgot to mark the value of the capacitor of the power input.
The capacitor doest have to be polarised! For some reason I only had electrolytic at hand at the time and I drew the cap like that in the schematic to see the polarity if needed. So you should be fine using any type of cap!
Here’s a link to the schematic in high quality:
The circuit is based on Elliot Williams’ Logic Noise articles on Hackaday. Here is the drum article:
The circuit is also compatible with eurorack systems. My modular works on and - 12V but using banana cables.
Thanks bye!
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