m0xpd:
I've just posted some code for an ADSR unit, which produces a physical CV output via an MCP4921.
The code, called ADSRduino, (sorry!) is available here
There's a description of how I used the code as the basis of a Eurorack module on my blog
This is working well in my new, home-brewed modular synth - I hope it might be of interest to others!
Awesome Stuff! I am creating a cassette tape synthesizer and need an arduino based ADSR with physical inputs in order to control the volume of a SONY TCM-200DV Cassette Recorder. Much appreciated!