This is one of the modules I’ve been working on, the Kosmo sequential switch based on the fonitronik design. (http://www.modular.fonik.de/Page32.html)
It is a nice multipurpose utility module for cv or audio routing, apparently any signal up to 12v. It has one input that switches between up to 4 outputs and is reversible (4 in, 1 out), with manual push button and cv controlled reset and “clock.” As well as a switch to select how many switch steps you want to cycle through (2-3-4).
For example, it can sequentially route an audio signal to different effects or filters or route one cv source to multiple modules. Combined with a clock divider and a sequencer (it is sort of a sequencer in itself) you can make more complex rhythms or note timings. I’ve learned this is called ‘ratcheting’ in synth-speak.
I just finished building the first one, it works! Here is a video of the first patch I rigged up. The drums and the master clock come from the Roland TR-8s which is clocking the LMNC 8step and an envelope generator. The 8 step is providing 1v/octave to both oscillators while the envelope goes to the sequential and is switched between the two oscillators, an unfiltered bass and a filtered ‘lead’ oscillator:
It seems to behave pretty well as long as you give it a clean clock source, you can use a lmnc envelope generator on loop with the right settings.
One bummer about it is it uses a “MAX313” IC: https://www.digikey.com/product-detail/en/maxim-integrated/MAX313CPE/MAX313CPE-ND/1512602
This was the best price I could find for a single chip !!12$!!! and would the most expensive IC I’ve got to date. I found a deal for 10 for 80$ and went ahead and did it. If you guys are interested in the panel/pcb I will pass on the bulk buy savings to you. I have 7 extra sets.
The circuit is already on my Github (/ctorpin). I will upload the faceplates and any final changes if you want to print your own in the next few days. I’ll put together some build notes and a BOM.