Envelope generator with rise and fall control, sustain AR and no-sustain AD modes, rise and fall modulation.
Documentation: modules — Envelope
Product page: microrack — Envelope
Cv inputs for rise and fall with the ability to to loop the evolope 
question is how fast can this thing go?! 
Also something like this would be a great teaching point. I remember the first time i came across “end of cycle trigger” didn’t have a clue for months what that was typically used for as id been accustomed to having a switch or button simply labelled “loop”. Then i quickly realised damn this isn’t just a fun new flexible modulation sorce but its also a whole new sound source as well! I think its things like this people miss out on
We have issue with time range right now, but the range can be fixed by tuning of the resistor values. I plan to implement rise/fall time from about 30 second up to 0.005 second (200 Hz), so you can use this module as LFO and even as signal oscillator
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Hooray, big description update!
Wow, this is a flexible module!
At first I didn’t think much of it: one of those simplified envelopes, where you need two of them to build an ADSR. But often a two-stage envelope ist sufficient, and this analog gate input opens up so many more uses!
Versatility of the modules is what distinguishes a modular system from a sawed-apart monosynth. 
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I was inspired by Buchla envelope, Makenoise Function and another same ad/ar envelopes
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Good news: envelope generator is ready!
Rise and fall time changes from 40 s to 10 ms, so you can use this module as envelope, as LFO, as slew limiter and as envelope follower.
I really like the result and I can’t wait for you to appreciate it too.
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