Hello Brach,
I put this project down for a short time but now I’m determined to finish!
The pedal turns on. It operates engaged and bypassed. It does add some distortion with increased volume. It does not add any effects.
So no tremolo or harmonic effects. Tap tempo led lights and changes as I tap or adjust pots. I have checked, using the guide, all of the voltages. All are within spec except OPT02 which reads around 4V. When I check it directly, across the two leads, I get 1.8V but when I check with circuit ground connected I get 4V. With My limited electronics knowledge, it doesn’t seem to me that this would prevent the other effects from working. I’m stuck!