[sdiy] controliing a wah

[Jena Jena]

Hi,

I just received a populated pcb of a Dunlop Cry Baby wah, which is fully 
working.

I bought it with the intension to use it in my diy modular.

It's some kind of resonance filter() with a potentiometer to control the 
filter frequentie.
I would like to control the filter externally.....preferbly with CV....but 
some kind of autowah would be cool to.

So my question is>
Is it possible to make a resistor controllable by a voltage?  If so.....how?

Thanks,

Jean

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