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cinnaboot ed0ed641fb EG_555: fix V- connection for TL072 1 week ago
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EG_555_front_panel EG_555: initial commit for front panel 1 week ago
EG_555_mainboard EG_555: fix V- connection for TL072 1 week ago
README EG_555: fix V- connection for TL072 1 week ago

README

envelope generator based on "The Fastest Envelope in the West"
by René Schmitz, https://www.schmitzbits.de/adsr.html

the modifications to the original circuit are: feed 5v into the control pin to clamp the output to 0-5V, use 100k/1k in/out impedances, add a front panel led that matches the gate input, and add a manual trigger switch to the front panel.