[sdiy] controliing a wah

[Dennis Verschoor]

You shold get vactrols to control it.
Here is something i am quoting from Cynthia.

" Vactrols are a great and relatively simple solution.

Go to Allied Electronics

http://www.alliedelec.com/
and search for Manufacturuer's part number VTL5C2
essentially a photocell on one side, and a light bulb (LED) on the other...

simply hook the photocell side in series with the main knob or geared
potentiometer of your Effect pedal, then hook the Led Cathode (-) to
ground, and then present the Anode (+) of the Vactrol's LED to a front
panel jack, (Label this Jack, "CV INPUT").

You may find it best to add a 100K resistor between the jack and the Anode.

That's it!

Get a few extras in case you short, them or kill them by accident

Good Luck!

Cynthia

www.cyndustries.com  "


Regards,

Dennis


On Fri, 18 Mar 2005 17:51:03 +0100, Jena Jena <jena_mu_six at hotmail.com> wrote:
> 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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> 
> 


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