Instructables Logo

Build Your Own Guitar Fuzz Pedal

Rock Out with Your Guitar

Description: Instructables Fuzz Pedal Kit
Skill Level: Intermediate
Assembly Time: 3 to 5 hours
Designer: Randolfo

Fuzz Pedal Kit You might have noticed, no matter how hard you rock out with your guitar, it just doesn't sound right. That's because you're missing "Fuzz." Yup, fuzz. Before you can do any serious rocking out, you are going to need to build a guitar Fuzz Pedal. Fortunately, making your own fuzz pedal is a lot easier than it may sound.

Required Tools:

Drill
Drill bits: 9/32", 1/8", 1/2", 3/8"
1/4" Screwdriver

Parts List:

Qty.
Part Description
Mfr. Part No.
1
Aluminum Enclosure 03-125B
5
0.1µF Capacitor DC.1
1
10kΩ Potentiometer 3329P-1-103
5
0.01µF Capacitor DC.01/1K20
5
2N3904 NPN Transistor 2N3904(FSC)
1
9V Battery DURACELL PC1604
1
Audio Connector 12B
1
Toggle Switch 1MS9T6B11M1QE
1
9V Battery Clip A104-R
1
Protoboard PCB-463-R
5
22µF Capacitor LHK220M35V511
1
5kΩ Potentiometer RV24AF-10-15R1-B53
1
100kΩ Potentiometer RV24AF-10-15R1-A15
1
1/4" Shaft Knob JK-902A-R
10
10kΩ Resistor --
10
100kΩ Resistor --

Step-by-Step Instructions

Step 1: Review the Parts

Take a moment to be sure you have all the required parts.

Step 2: Mark the Top Surfaces of Your Project Box

On the top surface of your box, measure in one inch from one of the shorter edges. Make two marks that are one third and two thirds of the way between the edges of the shorter distance. These are for the potentiometers. Measure in one inch from the opposite side of the front of the case. Make a mark that is half way between the two edges. This is for the stomp switch. On the side of the case make two marks for the audio jacks, making sure they won't interfere with any of the other parts that will be installed. Following the same logic as the audio jack marks, make one last mark for a toggle power switch.

Mark the Surface
Mark the Surface Close-up

Step 3: Drill the Holes

Drill the two holes for the potentiometers with a 9/32" drill bit. Drill a 1/8" pilot hole for the stomp switch and then widen it to 1/2". Drill two 3/8" holes for the audio jack. Drill a 1/4" hole for the power switch.

Holes
Drilling Holes

Step 4: Solder the Components

Build the circuit as specified in the schematic. The potentiometers, stomp switch, audio jack and power switch to the circuit will be wired in after they have been installed in the case.

Circuit Board
Circuit Schematic

Step 5: Attach the Potentiometer Wires

Attach a black wire to the center pin of the 5K potentiometer and a red wire to the pin on the right. Attach a black wire to the left pin on the 100K potentiometer and red wires to the two other pins.
Potentiometer Wire

Step 6: Attach the Audio Wires

Attach red wires to the signal lugs on each of the jacks. Attach a black wire to the ground lug on each of the audio jacks.
Potentiometer Wire

Step 7: Install the Audio Jacks and the Stomp Switch


Installing Jacks and Switch
Audio Jack

Step 8: Wire the Switch

Solder each of the red audio wires to one of the center lugs on the DPDT switch. Solder together one set of outer pins. Wirint the Switch

Step 9: Attach the Potentiometers

One of the potentiometer wires will be attached to the DPDT switch later.
Attaching Potentiometers

Step 10: Cut Out the Brackets

Cut out two brackets using the template file. Both should be cut out of non-conductive material. I cut out the larger base bracket out of a thin cork mat and the smaller potentiometer bracket out of 1/8" rubber. Cutting Brackets

Step 11: Place the Potentiometers

Line up the rubber bracket with the holes in the case and install the potentiometers.
Placing Potentiometers
Placing Potentiometers Inside

Step 12: Additional Wiring

Connect the remaining potentiometer wire in line with the audio-out jack's wire on the DPDT switch and wire from the remaining DPDT terminal lug to the audio-in point on the circuit board.
Addtional Wiring

Step 13: Connect the Power Switch

Connect the red wire from the 9V battery connector to the center terminal of the power switch and another red wire to either of the switches' outer terminals.
Connecting Power Switch

Step 14: Install the Power Switch

Connect the black wire from the 9V clip to ground on the circuit board and the free red wire from the switch to +9V on the circuit board.

Intalling Power Switch Close-up
Intalling Power Switch

Step 15: Plug in the 9V Battery


Battery

Step 16: Close the Case

Install the large insulator panel between the circuit board and the bottom plate of the casing and screw the case shut.

Close the Case
Close the Case

Step 17: Attach the Knobs to the Potentiometers


Knob to the Potentiometers

Step 18: Plug and Play

Plug your guitar to audio-in and your amplifier to audio-out.

Battery
Follow the Fuzz Pedal project discussion or post your own comments here.


Randy Sarafan is an interstellar wrecking ball of immeasurable destruction. He is also an artist, author, a fellow with F.A.T Lab, co-founder of S.F. Media Lab and Community Manager at Instructables. Open-source licensing brings him pure joy and enables others to fulfill their dreams. Randy's work subverts everyday life with a subtly biting sense of humor. His latest book is 62 Projects to Make with a Dead Computer. Follow him at RandySarafan.com.