The recent spat of wah circuits got me thinking about what a pain it is to test them when a lot of the vintage versions don't use the "normal" pots we'd find in a salvaged Cry Baby It also got me thinking about how awesome it would be to have a couple weird wahs in a 125B that could be controlled by a Roland EV-5.
So… I'd like to request a layout for an opto controlled "pot" as described by The Tone God so many years ago.
http://tech.thetonegod.com/rockncontrol/rock.htmlOf course this layout could also be used to add expression control over a single parameter of just about any effect since the value and taper of the vitual pot could be completely customized.
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