Distortion guitar pedal designed by Zachary Vex. I bought the PCB and soldered all the components on it based on the schematic below.
First I soldered all the components to the PCB
Second I made holes in the enclosure to fit everything inside
Last I labeled the knobs (and decorated the box)
This pedal is fully functional as a regular guitar pedal, and it works great. But here I connected a contact microphone to the input and a small speaker to the output. Among other things, I use this to play with feedback sounds.