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Envelope controlled... ?

Did a clip more, this time with the BEF-P; effectively putting it in an effects loop (like the Groove Regulator has):

This time with a USB sound card, so the sound is a bit nicer. The link has more info about chain and setup.

Next thing will hopefully be to make it work on my M9; as that would open up a lot of possibilities. (I'm thinking chorus/vibrato, reverb, filters, ringmod, synths and delay at the moment)

@Derek Balonek:
I hope I'm not stepping on your toes by making this, as I could understand you might be working on something similar; but I've had the idea in my head since about when the MWBD Pro came out (2-3 years back) and now, being an electrical engineer student, I finally have the skills requited to do this the way I want to.
 
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Oh, not at all. I'm glad someone else has taken interest in this kind of thing. What control method did you go with?

I've considered a single LDR and a fixed resistor, which may give a suitable sweep. I also thought of a 3-resistor voltage divider with the LDR in the center and JFETs tapped off either side. One side would pull closer to V+ and the other to 0V.

The envelope distortion sounds cool. I did a small one with a single gain stage. It used LEDs as clipping elements and the LDR as the feedback resistor. If you're on diystompboxes the schematic is there somewhere.

On the M9, I think that'd be easier. IIRC it just uses a variable resistance for expression control, rather than a voltage divider. So a single LDR/JFET would work.
 
Did a clip more

This sounds great, very synthy!

How difficult was the circuit around the digital pot? I'm wondering what took 8 hours to solder... I would like to build something like this, but wonder whether my electronics skills are up to it.

My idea was a microprocessor controlled VCA to do various gating/compression/ampitude envelope effects, but I guess the principle is the same.