my electrical engineering friend says that i should do one wire per connection instead of daisy chaining since it’ll be easier to troubleshoot if there is any issues.
great thread, I’d rep you if I could :tup:
What do you mean by “it shows the a button on screen light up but it doesnt select anything”
Also, if you move the PCB around and it moves the menu, it means that the ground wire touches a direction when you move it. You should try to avoid this. Strip less from the ends of wires you solder to the PCB so that theres less chance the wires touch each other.
Honestly, it’s up to you. Daisy chaining can be annoying, but soldering extra wires is even more annoying. And he is correct about the troubleshooting, but only in certain cases.
Like I said, it’s really all personal preference.
Thank you 
It’s always great to be appreciated.
is it necessary to use the ground from this point? since the board is common ground, couldnt i just use any of the grounds from the pcb?
that’s correct, you can use any ground points on the pcb as it’s common ground.
Can’t believe all the questions I’m having to ask now that I’m nearing the end of my stick.
I followed the directions here to build the hex inverter for the triggers, wired it up but the triggers aren’t working. I double checked my wiring and I am not seeing anything that looks out of place, and I tested the vcc and it is getting power and the grounds are showing correctly.
Any ideas why the triggers aren’t working? I’m at a loss. Last issue i had was my mistake with a ground cable coming undone, this time I don’t see anything other than triggers that aren’t functioning.
hmmm i wonder whats wrong with my dual mod then. when both pcb’s are plugged into the terminal they dont work. the systems will detect them but i am not able to navigate through the menus or anything.
i disconnected the 360 wires from the terminal and the cthulhu works perfectly. im not sure how to fix this problem
Make sure that your hex inverter is the right way. I’ve done a few where I cut the wrong pins/had the inverter upside-down and I had to redo those.
I double checked, made sure that the inverter was the right way, pin 14 is the power, etc. Is it possible to ruin an inverter while you’re soldering? I didn’t go nuts or anything but if the soldering iron heats the chip could it damage it and cause this?
I feel like it should be something simple that I just can’t figure out.
Check all the connections on the 360 PCB, make sure none of the connections are shorts.
Measure the voltage on all the connections when the stick is plugged in with a multimeter, if the soldering is bad (not sure what the english expression for it is, but it’s called something like a cold soldering in swedish), you might get lower voltage than you want, which might cause any number of strange problems.
Someone with more experience can probably give you better hints, but I’ve noticed that those two things are especially important to look for.
One thing you might want to do is to solder the piggyback cables on the cthulhu on one at a time, and see if the cthulhu still works after each and every soldered cable, that way you will most likely notice that one of the cables you solder screws everything up, so you know where the problem lies.
I just retested everything, here’s what I have.
All of the grounds/powers on the chip are registering roughly 3 volts when tested. The leads to the spots on the 360 pad have next to no voltage, I guess that’s what the inverter is for?
I’m really at a loss here, the only thing I can imagine is the chip isn’t working maybe a bad chip?
I tested the voltage on the buttons themselves, they are also getting over 3 volts, so the actual buttons on my stick are getting power, the chip has power but for some reason when the buttons are pressed they are doing nothing.
This thread is misleading to say the least.
You guys should put a huge disclaimer on the first post stating that you only need resistors, transistors and/or a chip IF you’re planning to make the whole board “low active”, triggers included, for a dual mod.
If you’re shooting for a single mod though just figure out with a multimeter which contact of the three placed nearby each trigger is the “low” (0~v) [fixed, thanks MKL], then proceed to solder that and the middle one onto one of your buttons (you’re gonna use only 2 contacts out of 3), download the Xbox 360 drivers for Windows, hook the stick on your PC, activate it through the guide button, open up the gaming peripherals calibration menu and keep moving the potentiometers with a screwdriver til you get this response (you’ll have to tweak the wiring as well using a trial and error process, I just soldered a wire to each contact and then switched em around til both buttons worked as intended, gotta double check but I most likely ended up wiring the “low” wire and the middle one on the left and the middle+“high” on the other trigger, not sure though):
http://img18.imageshack.us/img18/4607/pushbuttons.th.jpg
Hope it makes sense lol, I blame the language barrier but that’s what I have done a few days ago.
Not ground but voltage (on pads where the trigger goes high to activate). If it worked with ground there would be no reason to use an inverter and this thread would have no reason to exist.
Is the manufacture number for these 4716 pads MOV-547160? I only assume so because it has “4716” in them. I will be stopping by Fry’s this week to see if they have any.
Quick question. I accidently soldered the first wire to the ground on my A button, What is the best way to correct this? Should I just use that as the start of my daisey chain?
Yeah, just use it as your ground.
Or desolder it.
Thanks I got everything worked out and all connections are complete , this was the best guide I have seen. Thank you so much
noob question, with out the triggers, this should be a simple drill/solder hack right? I just want 6 working buttons (x, y, a, b, lb, rb) + start and guide.
so i did the pad hack, the only hickup i had is that when i press LB the left analog stick (directional thumb analong) goes down all the way (it crouches the player)… what might be causing this. also, i checked for any over solder and i cant seem to find any… any thoughts?
big thanks for this thread, I’ve always wanted to get into this kind of stuff, and this thread made it incredibly easy, I’ll post some pics later, but I had no trouble start though finish, great job!:lovin: