My original plan was to find an "H" series DualShock controller and solder to the copper pads on the PCB, but after searching for a while for the afformentioned "H" controller and not finding one.
I searched the web and found a guy who would solder to a different, more difficult part of the controler, but he wanted $40. I was like hell no and continued my search. Just today I found an "H" series controler and proceded to try and solder to the copper pads with no luck, no idea why, but I eventually gave up on that idea and kind of used the idea that the guy who wanted $40 used, exept I did it a more novice way.
I cut the ribbon cable between the two main PCB's in the controler, stripped off about 1/8 inch of the sheath, bent the wires odds=down evens=up kind of like this:
__|___|__|___|__|__|__
| | | | | | |
This made the places I had to solder to, twice as far apart from eachother and consequently easier to solder to. I soldered all the wires I needed, then folded the wires completely over and taped 'em down. I tested everything out and it works great. I'm so proud of myself. This is the first time I've soldered something that actually works.
Anyways, the whole reason for me posting this is in case someone else wants to hack a playstation controller. I'm pretty sure this is one of the easiest ways to do it, and I may be mistaken but I think this can be done with all DualShock1 controlers A H & M (I think those are the codes?)