Expression pedal to CV, will this work?

[Ale_jellybelly]

bit of a raw drawing but here's my idea

any obvious fault in this? except for the danger of plugging it where it shouldn't be plugged, of course

 

[Ale_jellybelly]

 

[jwin615]

I'd check the expression pedal and make sure it sweeps the way you think.(Assuming you want full CV/zero R at toe down) Also that it's zero resistance at one end and full resistance at the other (not, say, 1k and 9k with a 10k pot, etx). Otherwise, you won't ever get full on or off. How much that matters will depend on what you are feeding/triggering.

 

[Ale_jellybelly]

I made a quick breadboard to check voltages, I had 5v on the output so I put together the circuit on perfboard and wired it up
It works surprisingly well!



Here it is in all its glory!