While not entirely in Kosmo format, I thought I’d share something I’ve been working on.
It’s a sub oscillator based on some old school CD4000 series CMOS logic - that’s where I read about the CD4026 that Sam used in his googol [ thanks @eric ] counter.
This thing will take in a signal and spit out an octave below, with an optional fifth or octave above.
Here’s a demo of a prototype:
Still a few issues to fix up, but you get the idea.
Here’s the schematic - have at it. First one to turn it into a functioning Kosmo module gets a cookie.