Hey everyone, I followed this thread months ago. I was contemplating weather or not I was going to do this... mainly because my
ps3 was under warranty still, and I didn't like the idea of messing with the original functionality, plus the unsightliness of wires and project boxes coming out of your ps3. Hell I don't even like the idea that I had to cut a hole in the bottom of my
Wii for my
modchip :P.
Basically, I like functionality, and I also like reversibility.
I've done the mod already, but what I did was make it very concealed, and hidden, and also allowed full original functionality. Its also done without any programmed chips, or special hardware.
I modified some
usb mini ports from molex.com for this mod, they are able to have 6 points of connection (I will explain this later). I studied the mod before I did anything and found that you would need about 6 wires total in order to have your cake and eat it too (have both the mod and orig. funct.).
I know usb usually has only 4 points of connection, something I discovered was usb mini has 5, I also took in to count the ground, which is the metal area around the usb connector. This gave me 6 points of connection. The female connectors from molex are perfect, I had the most trouble with modifying a male connector. I took a usb large to usb mini cable (same kind used to charge the controllers) and stripped it down until I got myself access to the unused 5th wire connector. Once I got that, everything else was downhill.
I unsoldered the connections to the motor. and cut 1 wire for the sensor, doesn't matter which one. I then soldered 2 of my own wires to the motor and drew them out near the card solts. After that I soldered 2 more wires on the orig. wires that ran to the motor, drew them out near the card slots. After the motor was taken care of I soldered 1 lower gauge wire on one sensor wire, then another wire of the same gauge to the other sensor wire, I drew them both out to the other wires.
Now that all my wires have been ran, while putting the top back on my PS3, I slipped the wires through the small crack that the door for the card reader slots hinges on. I made sure the door could still close and that the wires weren't obstructing anything. once I got it all together, I had a ps3 with 6 wires coming out.
I soldered them to the female usb connector in this fashion
(The wires that originally ran to the motor)
PSr = PS3 orig motor wire red
PSb = PS3 orig motor wire
black
(The wires that run to the motor now)
MWr = Motor wire red
MWb = Motor wire black
(The wires that run to the sensor)
SE1 = Sensor wire 1
SE2 = Sensor wire 2
..MWr...PSb...MWb
..\..o.....o.....o../
...\...PSr..SE1../---SE2
....\...o.....o.../
......---------
If you notice the wires in a usb cable are color coordinated:
Red = MWr
Black = MWb
Green = PSb
White = PSr
5th wire = SE1
Metal cover = SE2
Now, on the modified usb male connector, you connect the relative MWr point with the PSr point, the MWb point with the PSb point, and the SE1 point with the SE2 point. You can strip down the connector and house it using some shrinkwrap and some hot glue, I'm sure you can get creative, maybe use some quick hardening plastic compound.
What you're making is basically a dongle, which connects all the points necessary for orig. functionality.
I mentioned before the 5th wire might be hard to get to. I used a razor blade to cut the rubber down to the metal of the connector until I could get in enough to solder a wire to it.
the last step...
Modify another usb mini cable. Since the mod doesn't use the sensor or the orig wires that connect to the motor you dont need to worry about the SE1, SE2, PSr, and PSb wires, this should help since you dont need to dig for a hidden 5th wire. The Red wire should correspond to MWr and black to MWb. These you connect your power/switch box, battery assembly to.
When your done, you should have a system that has a mini usb plug hanging out of it. when in orig. funct. mode the dongle you made is plugged in, when in mod mode, the switch box is plugged in.
Thats it!
I hope I helped... instead of confused anybody. I'm open for input/questions/whatever. I found this way to be very easy, cutting open all the usb cables gave me the wire I needed to perform the mod, and was especially helpful because they were color coordinated by default.
I'm sure this mod could be done with
firewire mini cables as well. I think there are more wires in that cable than usb mini.