Synth-diy-test

Hi,

On Sun, 15 Feb 2026, at 11:24, Thomas Hudson via Synth-diy wrote:

I’m looking for drone synth ideas, whether fully analog or very hands on controllers for something running on a Raspberry Pi, like Super Collider, Sonic Pi, or ChucK. Just looking for ideas to get started

there’s a LOT of riffing on the old “CD40106 and 6 pots” idea out there, including (without checking, but a fairly confident guess) the example you shared in your post.

You might also like to look at Nonlinearcircuits’ “Divide and Conquer” circuit.

https://www.nonlinearcircuits.com/modules/p/divide-and-conquer

You should be able to replicate and explore the idea in software with whatever the kids are using these days — Puredata, Max, Strudel, etc

I have an older Eurorack version of it and you can pry it from my cold dead hands.

Paraphrasing Andrew@NLC’s own description: feed it two rectangle waves at almost-but-not-quite the same frequency and enjoy a constantly-shifting ocean of harmonics. Then filter/EQ to taste, and also adjust pulse width of the source oscillators, and the mix levels of the divider outputs.

Good way to add some sparkle and fizz.

John

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