What LDR (light dependent resistor or photoresistor) do i use for wah pedal

[KH602]

hi there, just trying to find out what LDR and value to use for a remote wah? standard wah pot is 100K

am guessing i need a LDR thats 100K but not to clued up on LDRs

Anyone help

thanks

[jacobyjd]

The value for a wah pot (assuming crybaby or other standard design) isn't as important as the taper. Generally, the lower the better, but you'll have a hard time finding an LDR that will only do 100k.

I'd suggest putting a 100k resistor in parallel with the LDR for starters. That'll keep you @ 100k max resistance.

[KH602]

CHEERS, am guessing it needs to vary from 0-100k in value but yea i understand the taper problem. what does the actual taper of a dunlop hot potz look like? its awhile since i looked in to it

[petemoore]

  It's be a single variable resistor type wah design.
  The light condition/low resistance is what the LDR could have trouble with, that the circuit desires.
  I found over 470k easily from ROTM LDR's when fairly darkened.

[KH602]

What kind of LDR's are used in in the dunlop wah rack? i am basing it off andertons/R.G. KEENS design using the LDR etc. I know morley use LDRs in there wah pedal, does anyone one know if you can by them? surely there correct with the taper etc. otherwise it wouldnt sound good