Odd GCP Controller problem

[dmnchief001]

First post, so please answer with care.

I have a Rev. C motherboard. I am testing my video and controller pins before I cut the board.

I have audio and video working, and now I am testing the controller.

I only connected these three controller wires to the pins shown in viewtopic.php?f=36&t=9329 :
Red: 3.43V data line
Ground: only the center unshielded cable (I originally had the main shielding and the center unshielded cable connected and I don't see a difference.)
Blue: 3.43V Power Supply



So here's the problem. When I had all three wires connected, the GCP did not boot. When I disconnected the ground from the controller, the GCP booted, but the controller doesn't work (duh).

Now here's the interesting part. When I have only the red and ground cables connected, the GCP boots and the controller works fine at the main screen (analog and button presses).

My questions are:
Has anyone else had this issue?
If it ain't broke, should I fix it?
I think my issue is solved as the controller is working in the main screen, but will the controller continue to work in games?


Finally:
The composite video pin for me was pin FOUR instead of pin EIGHT shown in viewtopic.php?f=36&t=9329 .

 

[FierceDeity]

Did you check for a short between ground and 3.3v? If it only didn't work while those were both connected it sounds like a shorting problem.

Connect all 3 wires, turn the board on, and check the voltage. Even if it isn't shorting, it could be lowering the voltage. Also, try connecting just 3.3V and Ground.

If you have another controller, I'd try that, maybe your controller is bad.

 

[Prog]

Sounds like some wires are shorted to me.

 

[dmnchief001]

Did you check for a short between ground and 3.3v:
When I have my soldered cable disconnected from the controller, the pin reads 3.43V. Yay. When I connect the pin to the controller, the pin reads, 1.97V, so there is definitely a short, but it must be in the controller itself, because my soldered wire is still connected when I read the 3.43V from before.

Also, try connecting just 3.3V and Ground:
The GCp still doesn't boot. This makes sense because the 3.43V/3.3V pin is shorting.

If you have another controller, I'd try that, maybe your controller is bad:
The thing is, is that the controller WORKS when I only have the P1 pin and the ground pin connected. I haven't tried the L and R buttons yet, though.

Sounds like some wires are shorted to me:
I unsoldered and soldered everything, and all the pins read correct until I connect my 3.43V soldered wire to the gamecube controller's blue wire.



My guess is that the controller is maybe shorting? I don't have another controller to test.

What would y'all think about me proceeding with my mod with only these two wires instead of the three?

 

[SonyQrio]

The GC controller does really funny things to the board, like what's been happening to you, when wired wrong. Try switching the polarity of 3.3v and GND.

 

[dmnchief001]

Try switching the polarity of 3.3v and GND:
No boot.

UPDATE!!!
Ok... I LIED... I wasn't hooking the blue cable up to a 3.42V source. I was hooking it up to a 3.3V source.

While I was waiting for replies, I went ahead and cut my board.

I was going to wait until I installed my wiikey fusion and made the board look all pretty... but look how pretty...

Anyways, to fix the controller problem, I used the 3.42V pin shown in the image above, not the 3.3V pin stated in the trimming guide I posted earlier. Maybe 3.3V just wasn't enough to power the controller?

Does anyone see a long-term problem associated with using this 3.42V pin to power the controller?

Also, in the picture, you can plainly see that I'm using pin 4 for the composite video, not pin 8. I still don't know why this is different.

Also, after trimming the board, the big points for the audio stopped working. Therefore, I resorted to using pin 16 (the top pin) for audio, and it works

Finally, after I get the wiikey soldered in and I make everything look all pretty, I'll start a worklog.

 

[Prog]

Don't quote me, I think that 3.42V is fundamentally identical to 3.3V.