0415 GUITAR SYNTH
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This is a simple but fun pedal that transforms the signal into a square wave, up to four octaves apart: one or two octaves up can be mixed with one or two octaves down for super synthy sounds.
What makes this special is that the octave up part is based on a frequency controlled oscillator so it doesn't scramble chords like usual octave circuit (it's still monophonic however) and it tracks well over the entire fretboard. Compared to the Arcadiator it sounds less like a fuzz and more like a pure synth. It can be very controlled, but also make superglitchy sounds. In the demo below I used a guitar.
Stripboard layout (verified)
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Populated prototype PCB
CONTROLS
Mix - blends between octave up and octave down
Vol - output volume OctUp switch - toggles between one or two octaves up OctDown switch - toggles between one or two octaves down | ||