Favorite Drum Modules?

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I suppose I should mention this module some idiot threw together.

AO Noise Bells ,,,,,,,,,,,,,,,

This is a percussion and drone synth module based on ideas presented in the 2015 Hackaday article “Logic noise: More CMOS cowbell!” by Elliot Williams. (See also Cmos noise bell .) The PCB and front panel are Kosmo format but the same circuit could be implemented in Eurorack format, or other ±12V formats, with no changes other than PCB, panel, and jack dimensions. [IMG_6415] The module consists of two separate sections. One is a 2-oscillator circuit based on the “cowbell” section of the Hacka…