Picture of Fuzz Pedal

Once you have your guitar and learned how to play in time with a metronome, the only thing left to do is rock out. However, as you might have noticed, no matter how hard you rock, it just does not sound right. That is because you are missing something. As many guitarists will tell you, the secret to rocking out is actually fuzz. Before you can do any serious rocking out, you are going to need to build a fuzz pedal. Fortunately, making your own fuzz pedal is a lot easier than it may sound.
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Step 1: Go get stuff

Picture of Go get stuff
You will need:

- (x2) 2N3904 NPN Small Signal Transistor (Model: 2N3904 | Catalog #: 276-2016)
- (x2) 100K Ohm 1/4-Watt Carbon Film Resistor (Model: 271-1347 | Catalog #: 271-1347)
- (x2) 10K Ohm 1/4-Watt Carbon Film Resistor (Model: 271-1335 | Catalog #: 271-1335)
- 22 uF Electrolytic Capacitor (Model: 272-1026 | Catalog #: 272-1026)
- 0.1µF 50V Hi-Q Ceramic Disc Capacitor (Model: 272-135 | Catalog #: 272-135)
- 0.01µF 50V 20% Hi-Q Ceramic Disc Capacitor (Model: 272-131 | Catalog #: 272-131)
- 10K-Ohm Horizontal-Style Trimmer (Model: 271-282 | Catalog #: 271-282)
- 5K-Ohm Linear Taper Potentiometers (Model: 271-1714 | Catalog #: 271-1714)
- 100K-Ohm Audio-Taper Potentiometer (Model: 271-1722 | Catalog #: 271-1722)
- Multipurpose PC Board with 417 Holes (Model: 276-150 | Catalog #: 276-150)
- SPST Flatted Metal Lever Toggle Switch (Model: 275-634 | Catalog #: 275-634)
- 1/4" Mono Panel-Mount Audio Jack (Model: 274-255 | Catalog #: 274-255)
- Hexagonal Control Knob (Model: 274-407 | Catalog #: 274-407)
- Fully Insulated 9V Battery Snap Connectors (Model: 270-325 | Catalog #: 270-325)
- Enercell® Alkaline 9 Volt Battery (Model: 23-853 | Catalog #: 23-853)
- DPDT specialty stomp switch
- Sturdy metal project box

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drewb373917 days ago
Which capacitor controls the tone?

I think you mean potentiometer. The 5k is for gain. The 100k is for volume.

I mean bass cutoff
Anargopunk24 days ago

hey, one question, what happens w/ the black audio jack cables??

you plug them to the ground

apawar818 days ago
Do any one did this project on breadboard??
I need your help pals !!
ranjam made it!1 month ago

If you look at the schematic, it's a Fuzz Face. Now, in a few minutes with Google you'll find a million web sites showing how to build it, mods to tailor it to your tastes, parts substitution, etc. Even some sound clips.

stanford.todd; Yes, what would have been nice is a 'lesson' on how to have every part 'line up' so you don't have a plate of spaghetti, with wires everywhere, or parts 'criss-crossing', adding RF interference. In other words, a little tip or two on laying out the parts and wiring so everything is super compact, with minimal leads. Even just a close up photo of how 'randofo' made his build line up on the perfboard. My own build has RF interference, but apparently many commercial Fuzz Faces had the same problem. Of course there mods to try and eliminate this.

Still a fun build. Mine has NO perfboard; all the parts are just 'flying' in mid air, soldered and tacked together, with the leads cut as short as possible. Still works like a charm after a few mods.

stanford.todd2 months ago

This is the best I can do to understand what's what but even then I don't exactly understand how this applies to the circuit board etc.

stanford.todd2 months ago
Who can give a better explanation of how to make the circuit. I'm so confused.
Wait, the video shows it being played and there is virtually no fuzz?????
EricS36 months ago

Could I please see how to actually MAKE the circuit? It's not "nice" to show everything except what we actually need to know. Totally useless demo. Really. I went out and bought the components--this list being very helpful,thanks--only to find the instructions part TOTALLY USELESS. Are you working for Radio Shack? IF so, I will never go there again.(Radio Shack, if you're reading, don't let this as#&*(%le represent you)

ClarkM1 EricS36 months ago

I agree, everything is great but a vid on building the circuit would be great.

ClarkM16 months ago

Your schematic isn't drawn correctly. You should have dots on the connections which makes it slightly confusing to build. But nice instructable!

how much wiring do you need and what type

pedrovai1 year ago
Could you post the straight fuzz circuit path. I want to build a simpler circuit with fixed volume and gain?, absolute beginner soldering here.
Ok, the model numbers provided and description of the components are not what you receive if you go into a radio shack OR order from radio shack online for the following components:

0.1µF 50V Hi-Q Ceramic Disc Capacitor (Model: 272-135 | Catalog #: 272-135)1/4" Mono Panel-Mount Audio Jack (Model: 274-255 | Catalog #: 274-255)

for some reason no matter what you do, you will receive Model Numbers 272-0135 and 272-0255.

You will receive a 500WV Hi-K Dielectric Capacitor and a Stereo Phone Jack instead of the components in the schematic and in the "go get stuff" list. I have tried to get the correct parts through radio shack for over a month now.

And I agree with Antonye, there aren't very clear instructions provided with how to put this thing together, especially for a beginner. An instructable should do just that, instruct. There is nothing mentioned about wiring in the components or what guage wiring to get. Board placement would also be helpful for someone with no experience and this is the first project they want to build.
Antonye1 year ago
Very unclear instructions to follow if you aren't more advanced in electronics. Are the PDF instructions more step by step for what connects where and is soldered in connection to what? Looks great, my boy went out and bought all of the components and now he is asking me to help him put it together. Building the circuit board as per the schematic is ok if you can read that ok, but I can't. I realise my boy should have researched this more before he bought all of the components, but I think he believed there would be more step by step instructions. Can anyone help please as he is really keen to build this, has spent all of the money and now we are unclear of how to put the circuitry together without more clear step by step component connection instructions.
Do you have a model # for the 0.01µF 50V 20% Hi-Q Ceramic Disc Capacitor. I was able to find a 500V that matches the model # listed in the above "you will need" section. I have model #272-0131, is this the correct capacitor?
marshy6641 year ago
my project is putting out a lot of buzz when i turn on my amp. Is this supposed to happen? P.S this is the first pedal i've built.

randofo (author)  marshy6641 year ago
Yes and/or no. It depends what type of "buzz."

Does it do this with the clean signal? If so, then you have a problem.

Try adjusting the knobs and trim pots. Does that get you a more pleasing sound?
Would it be okay to use a breadboard so that I could avoid soldering as much as possible, as I am a beginner in electronics..?
randofo (author)  kimjames2291 year ago
Yes. You run the risk of components or wires falling out and maybe there being a little static, but otherwise I see no reason why you could not.
poplar tree2 years ago
hi all. i've begun to build the fuzz! but alas i have hit a brick wall already. this is my first project besides a theremin kit. i don't know much about electronics. i was wondering if someone would post some good picks of their finished project, as pics are about all i'm going on. learning to read schematics as i go, so hopefully something will click during the process. cheers!
brocowski2 years ago
oh and the dimensions for the box are 120 x 95 x 35mm i believe
brocowski2 years ago
hey if your trying to find the project enclosure he uses and the stomp switch he uses you can order bother from just go their website and type in the seach box "stomp" and hit enter and you see two metal project enclosures and the stomp switch
Mr.Pockets2 years ago
what are the dimensions on the box?
Tylerowicz2 years ago
Hey sick pedal! I want to make one myself but I was just wondering, if I use a 33uF 16V capacitor does it matter?
Thanks nice info really informative.
pemc2 years ago
hey i'm from ecuador and the only foot switches i can find are similar to these
i don't know if it would work since they look like plastic.
Also, how can i make this effect sound dirtier?
Awesome instructable!!
I'm very interested in creating my own guitar pedal.
Thanks a lot for posting this in such great detail!
I built this pedal
I used a different set of transistors from an old broken Oscilloscope
but the sound keeps cutting off, like the fuzz will blast like it should but it cuts out after about 2 seconds and comes back on and cuts out again
and every high gain transistor set (even the ones recommended here) that I have used does the same thing
any ideas as to what can be the problem here?
randofo (author)  THELAZERVIKING!2 years ago
Yeah. Probably the transistors you decided to use.
pemc2 years ago
would this work with 1/2-watt resistors?
randofo (author)  pemc2 years ago
It should
Tim772 years ago
Thanks for the reply, sorry for replying late. I have another question. My potentiometers legs are about 3 inches long (they look exactly like the one in the link and they dont look like the ones in the video) so im wondering if I can cut them shorter? Is that possible? If so how? What do you recommend I do?
Thanks so much. :)

P.S. I've put a picture of how the one i have looks like here.
Photo on 2013-01-27 at 20.19.jpg
randofo (author)  Tim772 years ago
Yeah. With a Dremel or hacksaw. Be careful.
666sebas9992 years ago
Something wrong happened, It didn't work and I tried to figure out what happened; I found this, even with the effect on bypass the signal isn't going through; when I unplug the DC power, signal goes through bypassed-effect. This have never happened to me before, can someone explain me what just happened?
Thanks :D
Tim772 years ago
Hey, the picture of the toggle switch in the link looks different than the one in the video? If it was a typo, could you please link me the correct one? Thanks :)
randofo (author)  Tim772 years ago
The linked one is fine. I just used the DPDT switch because I had it on hand. The SPST switch will do the job. You only need two terminals.
Thanks for this great instructable. I'm new to electronics and really excited about building this fuzz.

One question, why do you use a 0,01 µF 500V capacitor if you're working with a 9V battery? Wouldn't 50V be enough? I'm asking because I couldn't find any 500V capacitors in my local electronics store
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