DGWVI

That's normal behavior for this family of circuits. The easiest mod would be to add a smallish value resistor to lugs 2/3 of the Gain...

So, I turned this into an actual pedal, here are a few demos.

A while back I breadboarded this and was thinking of dropping it from the build list. Gain, gain, gain, fuzz, fuzz, fuzz, blah, blah...

The resistors all look good. Hard to see some of the caps. Are you able to run an audio probe coming off of pin 7 of the 555? Mines...

I'm assuming it's the same without the expression pedal? Could we get some clearer photos of the solder side? And, you've said this is...

You'll most likely have to upload it to YouTube first. Wiring lengths are kinda excessive, but look correct. Resistors looks fine...

Not sure how to add a video, but the Threshold and Frequency knobs do absolutely nothing, the LED responds to the Tone knob

There's really not a whole lot to get wrong with this circuit, so we can definitely get this up n running Would a better shot of the...

Your timing chip is wrong- NE555 won't work. I've had success with LM555, LMC555, TLC555, and ICM7555 Have you verified that the LED...

The little tab on the right indicates the emitter.

Bypass wiring like this....