fucanay
Well-known member
Ok, here is what I want to do. I have a cheapo Dan electro Echo pedal and a Morley wah wah pedal. I want to pull the wah wah guts out and put the echo guts in, using the pedal to control the rate of the echo.
The catch is that Morley used an optical system instead of a regular pot. I want to build something that I can use to simulate a 10k pot with an LED light source and a photo cell. I've searched the web but I'm not really finding example circuits. I'd like to power this with just the same 9V that the echo pedal uses and have it be independent from the echo pedal itself so I can wire it into the place where the pot goes now.
Am I dreaming here? I only want to do this because I have some stuff here that I don't like as is and want to make them into something I think I might use.
Matt
EDIT: Here is the Morley Schem that uses the optical pot.
http://www.morleypedals.com/pwa-iies.pdf
EDIT #2: I should mention that there is a plate on the pedal that varies the amount of light that reaches the LDR. It has a slot that varies in width that lets the LEDs light get through at varying rates depending on pedal position.
The catch is that Morley used an optical system instead of a regular pot. I want to build something that I can use to simulate a 10k pot with an LED light source and a photo cell. I've searched the web but I'm not really finding example circuits. I'd like to power this with just the same 9V that the echo pedal uses and have it be independent from the echo pedal itself so I can wire it into the place where the pot goes now.
Am I dreaming here? I only want to do this because I have some stuff here that I don't like as is and want to make them into something I think I might use.
Matt
EDIT: Here is the Morley Schem that uses the optical pot.
http://www.morleypedals.com/pwa-iies.pdf
EDIT #2: I should mention that there is a plate on the pedal that varies the amount of light that reaches the LDR. It has a slot that varies in width that lets the LEDs light get through at varying rates depending on pedal position.