⚠️ Archived 2025-08-25. No longer maintained.

KiCad project for the circuit and PCB of R.A. Penfolds ADSR design which I adapted as a Eurorack powered module. The original circuit is taken from the book, "Electronic Synthesiser Construction" by R. A. Penfold, published by Babani in 1986.

I have kept to the original design as much as possible but added power and switched INT.Gate via a Eurorack spec bus.

I have yet to manufacture and test this circuit.