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Building a wah pedal. Can someone help???


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This is up in the bass forum as well...

 

I've been wanting a wah for awhile now...mine is dead. I never really used it much, but they are fun to keep around. I've been looking at all of the options that are out there, and a few seem to fit the bill, but they are god-awful expensive. I want it to be able to do anything that I throw at it, no one trick pony here...

 

True Bypass is a must (wahs suck...literally)

Q Control

Trim Pots for bass, middle, and treble frequencies (preferrably on the outside)

Dual Inductor (Red Fasel and probably a Halo) w/ 3 way mini toggle

Staus LED (it would be nice to have a few, 1 for on/off, 1 for each Inductor)

 

Problem is, I don't know how to do most of these!!!

 

Can anybody explain how I can do:

 

The dual inductor 3 way mini toggle mod? I want to be able to have one inductor or the other...or both at the same time.

 

The status LED mods? On/off should be easy enough. How about the LED for the inductors though? Basically I'd like a red LED for the fasel and a blue (?) LED for the halo, that way I can clearly see which one I am using...or both!

 

This would be a super bitchin' wah if I can get it all to come together. I'd post the schematic of the BYOC board, cause I'm starting with it...but it's a PDF. I'm going to get the BYOC wah kit and go from there...

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The BYOC board is what I'll be using, and it already has spots for both inductors. They use a rotary switch for...switching...between them. I'd rather use toggles. I'm just not sure how to wire them up...

 

I have no idea if I'd be able to do the LEDs for each inductor though...any thoughts?

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I have no idea if I'd be able to do the LEDs for each inductor though...any thoughts?

 

 

You might want to rethink that. LED's have a slight voltage drop, and that changes the Q value of the whole RLC circuit. You might end up having to change a few capacitor values. Meaning.... the pedal will need to be tuned for them, something that's tough to do without some math. There is also the polarity of the LED's to consider. If they go into the wrong place in the circuit, that might make the whole thing inoperable.

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I'm not sure about the extra contacts. Here is the schematic for the wah...it's a PDF, so be patient.

 

http://buildyourownclone.com/wahinstructions.pdf

 

Page 3 starts the circuit board pics...

 

As far as the LED's go, I was just figuring that having a visual indicator would make things eaiser for me. I'm not afraid to figure out the math, but I don't knwo where to start...so it kinda makes it impossible!

 

Thanks for the responses so far!!!

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