Shoeman is one of the coolest, rarest, and most sought effects pedals ever made. This absolute unit of pure genius is full of more options than any pedal probably should have. An analog harmonizer that turns your input signal into a square wave and then launches it through a multiplier and divider that adds intervals to your note, sending your signal into the far reaches of space and beyond.
Building Docs coming soon. Stay tuned!
For further analysis on this circuit take a look at this thread on Free Stomp Boxes Forum.