Blinkenlights 4017

ADSR Envelope Generator for Eurorack, 4HP wide. Peak envelope voltage can be preset to between 5-10V.

A nice little envelope generator for your modular synth using an unusual design based around the 4017 chip. Generate those envelopes in style. The kit consists of a front panel and PCB ONLY.

New black faceplate
4HP wide
13mA +12V
13mA -12V
no 5V connection
50mm deep
works well between slow gates up to audio frequencies (see the images of oscilloscope traces)
Preset the peak CV level to between ~5-10V with a trimpot mounted on the PCB
Choose between long or short envelopes with a panel mounted toggle switch
Gate opens at about 1.5V, tolerant of +-12V - can be gated by a wide range of other modules / waveforms
3 x Indicator LEDs show when the module is in Attack, Decay+Sustain, and Release states
Blinkenlights is a range of synth modules I designed myself, with an emphasis on BLINKENLIGHTS!

https://www.tindie.com/products/nbirch/adsr-blinkenlights-envelope-generator-for-eurorack/