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Make an easy guitar distortion pedal (STEP BY STEP!)

Make an easy guitar distortion pedal (STEP BY STEP!)
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So, I decided to make an instructable! this is my 1st one, please feel free to comment on anything and everything.   .... pleeaase comment!




Here's the video of how to do it!

http://www.youtube.com/watch?v=1ODWJxliqd4

Note: Please Read all steps and read them carefully (if youre just starting at this stuff that is!) if you want to make this right! It should be easy if you follow the steps well.  This is more of a beginners project, you could still make it otherwise!

If you have tried and tried to make guitar effects pedals and have not succeeded, this instructable is for you! Or if this is your very first one then this is definitely the place for you to be. I have not found one instructable or website that gives clear step by step instructions on how to make guitar effects pedals. I found one quite clear with the instructions, and all the comments helped out too. It just lacked the Step by Step part. This is it: www.instructables.com/id/Very_simple_and_cheap_GuitarBass_distortion_pedal/
I am using the design (schematic) from this one as it is a very simple distortion pedal.

lets get started!

Update:

Okay so Amerinidiot1231 was kind enough to create the perf board layout schematic, so that is attached on this page if you would like to refer to it.
 
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Step 1Important Step: Resistors

Important Step: Resistors
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Resistors do basically what it sounds like they do! Resistors Resist the amount of current flowing through a circuit. (a circuit is a path of electricity. Basically if you connected a battery to a light you would have one of the simplest circuits possible)
So for example if you made the above circuit by connecting a battery to a light and then added a resistor anywhere in the circuit the light would be less bright than it was before. The amount of resistance in a circuit depends on how much resistance the resistor(s) have. Think of it as a river! the water flowing through the river is the current flowing through the circuit, the larger rocks in the river slow down the water (as the resistors lessen the current).  Resistors will look like the resistor in the picture below, they usually will not be any other shape, they slightly vary in size and they will sometimes vary in color other than the creamy color like the one below, I have also posted a picture of a blue one so that you can see what I mean when I say they might vary in color other than the creamy color one below. So now that you know what they look like, you will hopefully not mistake them for anything else!

Reading Resistors
For windows (not sure if it will work for macintosh or other operating systems)

it is So much easier just use this program to read your resistors: www.mitmaro.ca/oldsite/files/rr.zip
note: this program will not give you any viruses. All you need to do to use it is click on the link above and then click SAVE and save it to your desktop or somewhere else that you will remember it. Once it is saved, click open. Once you have opened it Double-click on resistor reader and then click extract all, then click next, next again, make sure you have selected the checkbox that says "Show extracted files" Click Finish and then a window will pop up with some files double-click on resistor reader! now I will tell you how to use it: (do this when you need to have your resistors read)place the resistor down on your computer desk facing your computer. Place it so the gold band is facing the right side of your screen. Count the number of bands on the resistor. If it is four bands then under resistor type, select four band, if it is five bands select five band. now, start from left to right select the color on the left matching the color on the left of the resistor and so on the band on the right will usually be silver of gold. It is pretty straight foreward I guess.

Now for macs and other systems!
There is this website www.pealefamily.net/tech/resistor/ It only does four bands though I think that is probably all you will be dealing with though. But you need to read the above step for windows users because the one you will be using will be much the same. *READ ABOVE STEP!

So thats step 1!

Oh and one last note: you can combine resistors to make one resistor like lets say you need 22 ohm resistor, you can combine two 11 ohm resistors. and resistors are not directional, so you can put them either way around in the circuit!
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215 comments
1-40 of 215next »
May 22, 2012. 5:43 PMGuleyo says:
Hi, So i have some problems :/ But the main problem i have is this:
When i added the bypass switch ( Mine is 3dpt instead of dpdt) i wired it exactly the same as in the diagram. But only Clean worked, so what i did was i changed the lower 2 legs of the switch for the ones in the middle and i put the ones in the middle under them. This way since the middle 2 legs are always on there is always something to get current between the inputs and the inputs. (Because in the original drawing I don't understand how the top 2 legs can get connected if they don't have something to connect with each other???)
But now.... only the Fuzz works and when i switch to clean it sounds extremely low volume :/ any ideas why?
Ps. i think its something to do with the battery.
May 20, 2012. 4:51 PMmiket.mt69 says:
I am very new to this I used a pn2907 transistor I used the 100 uf cap and 10 uf cap used a 180 k resistor for r1 and a 20 k risisor for r2 and I used a 100k audio pot for r3 I used different jacks cause the ones I used were from a amp so they are a little different but I tried hooking them up both ways the diodes I am using are lh fr 104 I think thats what the numbers say I have tried different transistors havent changed diodes yet but all I get is load hum. The same hum you would get if your guitar was not plugged into the amp and you held cable in hand please help
May 5, 2012. 2:29 AMkkumar u says:
wow...
May 5, 2012. 2:28 AMkkumar u says:
wow wonderful explanation...
May 5, 2012. 2:28 AMkkumar u says:
wow wonderful explanation...
Apr 8, 2012. 10:07 PMbharacuda says:
Sir good day. Can you up the video again? and your finish diagram? Please?

Thank you so much!
Nov 11, 2009. 4:33 PMUndermig says:
yo dude um do you use a sercuit board or you dont?
Apr 2, 2012. 6:57 AMmc_john50 says:
please put the video back again
Mar 31, 2012. 10:33 AMbmossberg says:
I got the circuit all soldered together without a bypass switch or potentiometers for the sake of simplicity, and it sounds really nice. The only problem I seem to be having occurs when I turn the volume on the guitar to zero. The circuit seems to emit a strange hum but it only comes out when the volume is all the way to zero.

Please explain what I can do to eliminate this.
Thank you.
Mar 22, 2012. 1:30 PMthom__stone says:
oh also changing out the first cap doesnt seem to change the sound much for me.... i think Ive got it at a 2.2uf at the moment.

also tried my MXR micro amp before it and it just clips like a mofo, sounds quite cool with the gain ALLL the way down on the MXR but still, would be nice to get a bit more gain.
Mar 22, 2012. 1:27 PMthom__stone says:
Thanks for the awesome instructable, I've been struggling for ages trying to get a guitar pedal to work, tried a red llama, Anderton TSF (only slightly different) and several fuzz face variations with no luck. BUT THIS ONE WORKED! I now know there is nothing wrong with the components I was using as they all seem to work.

the transistors that worked for me are:

BC109
2n3504 (is there any difference between this and a 3904?)

the diodes that I have got working so far are:

red LEDs from an old bike light,
1n5274's

the sound is marginally different with different combinations of all of them, so far my faves are the LED's with the bc109. got some white ones somewhere so going to try those just for the hell of it, see if it makes any difference

I am getting a bit of hum but im hoping that will go when I get a switch in and earthed properly with some pots maybe, anyway thanks again.

have you thought about doing a slightly more advanced circuit? perhaps a TSF?! ;-)
Sep 14, 2011. 11:53 AMovan der beek says:
I only have 2 jack MALE connectors (mono) how to connect??
Mar 5, 2012. 10:03 AMrockdrum says:
You just do it as if it was mono stereo
Mar 5, 2012. 10:02 AMrockdrum says:
Its late but,, it doesnt really matter
Feb 5, 2010. 6:39 PMAmerinidiot1231 says:
This works, especially if you use the correct transistor.  You have to use a 2n3904 or similar transistor. (any transistor wont work since some are npn, pnp. etc).

I made a circuit perf board layout for you to add to this page :)

<img src="http://i8.photobucket.com/albums/a25/AmerinIdiot1231/render.gif" border="0" alt="Photobucket"></a>

http://i8.photobucket.com/albums/a25/AmerinIdiot1231/render.gif

The transistor was my problem.  If you build based on the perf layout note the orientation of the transistor.
Feb 7, 2012. 4:41 AMkschmidt2 says:
you don't have to use that transistor, i'm using a BC 548 and it works fine, i did find that if i put it on one way, it amplified clean, and the other way it distorted. works well though.
Nov 10, 2011. 4:45 AMkatsa says:
Totally awesome! That's what i was looking for!
Feb 2, 2012. 2:56 PMTobaTobias says:
So instead of using regular diodes I can use LED's ?
Jan 8, 2012. 3:06 AMmuykeljan says:
can i use 100k ohm resistor and 47k ohm resistor? does two 1n4148 rectifier diodes can produce harsh sound? tnx for an early reply
Jan 7, 2012. 10:25 AMmuykeljan says:
can i combine both 100k ohm logarithmic potentiometer (volume) and 1k ohm linear potentiometer (distortion) for my status? thanks
Dec 28, 2011. 10:37 PMSam i am561828 says:
hey im a beginner at all this so i decided to try this instructable as a first but i also wanted to add a true bypass switch. when i made it, all i got was A LOT of buzzing and very little sound even with the amp on full. I used a 1000uf capacitor instead of a 100uf and soldered everything onto pre-puched PCB board. i"ve also used the correct pots and added a DC socket. I've checked to make sure everything is in the right place but still no luck. the two diodes i used were 1N914/1N4148 9guy in the shop said they were the same). Have i bitten off more than i can chew for a first project or is this idea not possilbe?

This is the diagram i used for the true bypass:
http://www.beavisaudio.com/techpages/StompboxWiring/

Any help would be appreciated
thanks in advance
Oct 21, 2011. 11:32 AMHansJorge_18 says:
good-looking setup but i do have a question. Isn't the second diode backwards?The reason I ask is because i thought that diodes only allow current through one way, from the base of the triangle to the line at the tip of the triangle (the triangle and line being the american symbol for a diode). I'm not an electronics expert so i don't know but If you could answer this question i would be greatly appreciative. Thanks in advance.
Nov 6, 2011. 7:33 AMvinnyjojo says:
The second diode is backwards to give the effect of "symmetrical clipping" - check out the diagrams below.  You can see on the waveform in figure 4 how the symmetrical diode clipping works.


Dec 8, 2011. 6:51 AMTomCarew27 says:
Would I be able to use one diode, as illustrated in figure 2. above, and get a blend of clean and distorted signal?
Nov 13, 2011. 4:21 AMLyrik21 says:
I assembled it about 2 hours ago and it seems i have created a very effective "power operated guitar shut down switch". Okey, i have used things lying around, so because i didn't have diodes i used 2 LED's, and istead of a 9v battery i used a 9v power supply. When i applied the power, the signal didn't get from the guitar to the amp, but when i unhooked it, it kinda bypassed the whole thing. After half of hour i hooked it up again, and the LED (one of them) started magically glowing white (it was blue before this happened) and it popped with a nice bang and a puff of smoke. I will be going tomorrow to my local hardware store and buy the exact parts you specified (although a schematic would be easier). I just hope that it will work, because i have tried a fuzz pedal project and i wasted all of my money (i was not the only one that had this problem). But i certainly hope your's will work
Apr 2, 2011. 4:24 AMcoolguy2015 says:
I've made it and its working, but with slightly less distortion. How to get more?? can any one plzzz
Apr 3, 2011. 1:01 AMfluxorz says:
try some different diodes. also, if you can manage it, use a preamp before the pedal. i had a headphone amp laying around, so i put that in line before the pedal. it thickened the distortion, but also overloaded it a bit and it would cut in and out.

as for the diodes, check out steps 3 and 4 again, they talk about which diodes give more distortion, etc. good luck!
Nov 12, 2011. 8:29 PMcoolguy2015 says:
and it is giving only a fuzz sound not a clipping distortion...
Oct 8, 2011. 5:33 PMhtatsuma says:
What diodes did you use? transistors? capacitors? could you post a sound clips for this distortion
Oct 7, 2011. 6:00 PMhtatsuma says:
can you say exactly what diodes dis you just used i dont the sounds of this distortions could you pls upload a sound clip
Sep 29, 2011. 8:43 AMsskwigelf says:
This is a cool beginners guide! I Like it a lot. For you guys , who want to design this on a PCB ,you can go ahead and use EAGLE for that. Happy METAL Distortion , my headbangin' friends.

PS : - Can anyone tell me what psycho effects does Herman Li use ? Also , the Djent patch ,is it due to downtuning of the guitars , or is there special Clipping distortion for Djent sound?
Sep 18, 2011. 8:26 PMThe Wheel says:
Please say me the exact transistor to use. please write me the name of it. (like 2n3904; 2n3906; 2n2222)
Sep 10, 2011. 8:09 AMMetalcoreguy says:
Hey, first i wanna thank you for sharing this cool pedal tutorial!
I have one question:
I've made it all right, but all I can hear is my clean guitar, with more hum. I've changed the diodes, resistors and transistor, and it still sounds clean. What can I do to have more gain so I can get a really distorted sound?
Aug 19, 2011. 10:29 PMmcameron6 says:
so I followed every step in this...and accidentally made a transistor radio
Aug 16, 2011. 1:39 PMmccrawfym says:
do you have to use a 1 kohm pot for the distortion level????
Aug 11, 2011. 6:08 AMjorence says:
if i'll put an 1oo k ohm potentiometer...... where should i place it??where should the two leads of the resistor should went out to??or connect it ??would please make a CLEAR schematic of your project??thanks!!:))
Aug 2, 2011. 12:50 PMpeppersJ12 says:
the "logarithmic" potentiometer is different from a 100hohm potentiometer? 
1-40 of 215next »

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