Making a DIY guitar fuzz pedal is a fun and easy electronics weekend project for hobbyists and guitarists alike. Making a classic fuzz pedal is much easier than you think. It just uses two transistors and a handful of other components. Aside from sharing the schematic, throughout this project I will also be going over basic tips and tricks for guitar pedal construction.
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For this project you will need:
(x1) Hammond BB metal enclosure
(x2) 2N3904 transistors (or equivalent) **
(x1) 22uF capacitor
(x1) 0.1uF capacitor ***
(x1) 0.01uF capacitor ***
(x2) 100k resistors
(x1) 10K resistor
(x1) 5.1K resistor
(x1) 5K potentiometer
(x1) 100K potentiometer
(x1) DPDT heavy duty push switch
(x1) 9V battery plug
(x1) 9V battery
(x2) 1/4" stereo jacks
(x2) Dial plates
(x2) Velcro squares
(x1) 3M 30-NF Contact Cement
(x1) Drilling guides (download and print)
** Different NPN transistors create slightly different sounds. Feel free to experiment on a breadboard with the circuit before you build it.
*** The 0.1uF and 0.01uF capacitor can also be swapped out for slightly different values to create different sounds. Again, experiment on a breadboard before you solder anything in place.