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Simple Xbox 360 Rapid Fire Mod

Step 8How it works




This works because to light the LEDs (on some boards with the crystal described in the intro), the Xbox uses PWM. Which means pulsed width modulation.
Basically, it send the power to the LEDs in quick pulses, so this mod uses them pulses to trick the Xbox into thinking you are pressing the trigger really quickly.

Clever.
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27 comments
Jun 5, 2010. 10:03 PMjacked_up_modder says:
I just modded my P10 controller and completed it as shown, works...LIKE ANOTHER CURRET TO THE TRIGGER. i have and used exactly what it says you need, one thing that might make it "not work" is the resister, I DON'T HAVE ONE ON MY CONTROLLER
Nov 15, 2010. 4:34 PMPale_Flyer says:
try a VERY small ceramic capacitor. it will work the same, but just wire it to the trigger. the crystal sends pulses, and the capacitor charges and discharges if there is current. just put the capacitor after the trigger, probably with at least one switch, a three proger, and you should get this to work on any 360 controller, or PS3.
Dec 18, 2010. 9:52 PMtoureg89 says:
what is a three proger?
Dec 14, 2010. 9:32 AMjobergy says:
and if small capacitor, how small is small? specifications of any sort?
Dec 14, 2010. 10:08 AMPale_Flyer says:
depends on how fast you want it to fire. the smaller the faster. i dont know the frequency of the controller crystal.
Feb 11, 2011. 12:04 AMmatveykitchen says:
so in other words... experiment!!!!
Dec 14, 2010. 9:28 AMjobergy says:
so do you solder the wire to the player 1 LED still with the ceramic capacitor? you should make an instructable on it. I would rather not go the rapid fire CHIP mod so this would be great. I have a CG circuit board instead of the Matrix motherboard like in this tutorial. so i need to go another route.
Dec 14, 2010. 10:08 AMPale_Flyer says:
if you wire it directly to the power then it doesnt matter what player is using it. it will still work.
Dec 14, 2010. 5:18 PMjobergy says:
ok, makes sense, does the capacitor have to be ceramic? i looked at the ones at radioshack and they looked pretty big, i am not to electronic savvy but by the specs it looked as if this was the smallest they had = 0.047µF 50V Hi-Q Ceramic Disc Capacitor .  are the microfarads and the voltages ok or do i need to go somewhere else to find even smaller?
Dec 14, 2010. 6:16 PMPale_Flyer says:
and if you want to put a potentiometer inline before the capacitor then you can adjust the charge rate, which is the fire rate in game.
Dec 14, 2010. 6:15 PMPale_Flyer says:
ceramic are lower capacity/voltage. you only need enough to trip the trigger circuit. the microfarad are the capacity, that is the num you car about, and the voltage should be fine over proly 30 volts. you might want to get an assortment. and wire the circuit with out soldier, or tape to make sure it is enough... they should be very cheap.... looking at this, it should only cost like 5 bucks how the guy made it. so the extra capacitors should only be like an extra five...
Dec 14, 2010. 8:51 PMjobergy says:
hey thanks man! i wasnt sure which one i should concentrate on, farads or volts. you have helped me out more if not the same amount as the instructable itself. As I said before, you should make one yourself, if not im working on this one as i do this project, and if i do end up going your route i will be sure to give credit to you. but if you do end up wanting to make one then i will just let you do so.
Dec 14, 2010. 9:14 PMPale_Flyer says:
i am ps3. i had a 360, but like the ps3 better. and i do have an instructable up, but im pretty sure it sucks. i have a second ones ive been "workin on" for like 6 months. tried to post, but apparently i dont have enough pics on it.
Jun 15, 2010. 3:54 PMflargman98 says:
winn a nnt resister work or does it have to be cmt ?!?!?
Aug 24, 2008. 7:45 PMCreep The Ninja says:
PLEASE READ have you done this with a wired controller? cause you said it works with both wired and wireless please respond i need to know cause i have looked everywere and couldnt find out how to do this with a wired controller
Aug 20, 2009. 3:51 PMachmed 55400 says:
it just needs a resistor in the middle of the circuit board. duh.
Aug 20, 2009. 5:07 PMKreten says:
it just needs a resistor in the middle of the circuit board ok what resistor and where?
Aug 23, 2009. 9:56 PMon a path to instruction says:
read UPDATE on the intro
Aug 30, 2008. 7:39 PMBarney Watches You says:
it's the same....
Aug 13, 2009. 5:14 PMhajahaya says:
Thank you so much for putting this on here!!!!! I did it today and it works wonders :p I won every game I played on cod 4 muahahaha
Jul 10, 2009. 5:42 PMchuntito24 says:
a little nerve wracking doing such delicate work but still the awesomest mod
Jun 25, 2009. 12:32 PMmtndfvr says:
Can a c15 be modded?
May 20, 2009. 2:35 AMwarkid10 says:
if it acts as another shooting button with no pulses means your using the wrong kind of controller
Apr 26, 2009. 1:06 AMMaximum Payn3 says:
What gauge cable did u use? 25 gage?
Apr 27, 2009. 4:47 PMRandomHero says:
try 22 guage
Apr 10, 2009. 7:07 PMNateD says:
please help! i modded it with the right kind of switch and everything, my soldering is fine, and when the controllers off, the green light shows up when i push the button. BUT the rapid fire only works occasionally, and it keeps making my controller disconnect and do the light blinking like it isnt connected. i checked and i know i have the right type of controller
Apr 15, 2009. 3:46 PMAshin says:
Try to replace the batteries.
Apr 2, 2009. 9:58 AMnals15 says:
i got mine to work but it only works a couple of times before i have to reset my controller. why is this. PLEASE HELP.
Aug 30, 2008. 8:01 PMjessecoy says:
PLEASE HELP....I completed this project with ease however my new button does not pulse. It is like an extra fire button. It only shoots as fast as I push the button. Can someone please help me out here???
Mar 22, 2009. 1:19 PMsaltatious says:
i know i have the same problem please help someone
Mar 14, 2009. 9:07 AMninjaspartan says:
you have modded the controller with out the needed resister sorry
Mar 17, 2009. 9:54 AMdeanski says:
so how would you add a resister?????
Mar 18, 2009. 3:48 PMninjaspartan says:
it's the controller style you can't add one and magicaly make it work sorry
Oct 22, 2008. 1:04 PMMilotisX says:
does anyone think this is possible on a 3rd arty controler plzget back to me soon great instrucyable
Mar 22, 2009. 9:38 AMsnowballxo says:
Microsoft controllers only, sorry.
Oct 21, 2008. 12:51 PMacker123 says:
built it and absolutly luv it ive already been screamed at about 20times on xbox live 4 it my dad did the solderin and tbh its probs better than yours.
Sep 20, 2008. 6:05 PMLikwuddeath06 says:
Okay so heres the skinny on the button not working for some.
The way he did it was great, ingenuous and works- if...
...your controllers circuit board looks EXACTLY as his does. this is to say that the silver "box thingy" must be on the top of your controller(somewhere in between your joysticks). not on the bottom. Also if your P1, P2,P3,P4 LED's are numbered using "D21, D20...etc" instead of just "D1, D0...etc"

in the case of "Most" americans, you will have the similar problem with the button just acting like a second fire button...i.e. no rapid fire for USA.
I do believe that since he is apparently from GB or somewhere in Europe, their controllers are wired differently than USA's are.

Now my reasoning behind this theory, and yes, it is my "Theory", I also have the Halo3 edition console and controller, as he did. He has the old circuit board in his controller, the one with the "Pulsating LED's" which is key to making this thing work correctly with no extra hardware.

So there you have it Ladies and Gents. Now i'm not the greatest EE out there so if anyone has an idea on a cheap easy way to make my rapid fire work, as well as countless others here in the Great USA,( no offense GB) Please feel free to email me or AIM me "Mowinurface"
I was thinking some kind of autorocker to make the signal flicker? any help=Much appreciated!

Sep 29, 2008. 7:56 AMsparten says:
i can build one for you guys with the us version of the boards just let me know. all that is needed is a cap and resistor and a known supply then calculate the pulse rate and viola you have it as the cap charges and discharges you get a pulse that will fire the triger and all you need to add is a veriable resistor or small pot to adjust the rate of fire you want. heheh. not a problem. you can even do to the exsisting switch and not need to hot wire a new momentary switch. thanks sparten

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