Controller Switch troubles

Includes but not limited to: SNES, Genesis, Sega CD, PlayStation 1, Nintendo 64, Dreamcast, Game Gear and I guess the Virtual Boy.

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Kurt_
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Controller Switch troubles

Post by Kurt_ » Wed Oct 18, 2006 7:35 pm

Well I hooked up the switch on my snes to switch between the onboard controller and a normal one.

It's a simple switch. One wire goes to +5 controller on the board (pin 1) and one goes to that pin on the controller port or onboard controller.

The onboard one works fine. However, when you switch to the controller, it acts as if every button is held down. (Or something like that, in Starfox, it at least leans right, fires a bomb, and boosts, and doesn't stop leaning, no matter what is pressed.)

Am I doing something wrong?
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Turbo Tax 1.0
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Post by Turbo Tax 1.0 » Wed Oct 18, 2006 7:57 pm

try cutting off ground instead :) it may help out
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Post by Life of Brian » Wed Oct 18, 2006 8:11 pm

Yeah I think cutting ground instead will work
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Post by Kurt_ » Thu Oct 19, 2006 8:07 am

Ground was the first thing I tried. I'll check for shorts and such. Could a short cause this?
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Post by Turbo Tax 1.0 » Thu Oct 19, 2006 3:01 pm

it could also just be a copulate up controller, this happened to at least one controller on both of the snesps i built, both near the end of completion also :(
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Post by Kurt_ » Thu Oct 19, 2006 6:34 pm

Well I don't know what the problem was, but through trial and error I found the problem.

The data line, for whatever reason, had to be switched off as well. So the switch switches between both the +5V and the data lines on the controller and onboard controller.

But now all is well.

Code: Select all

( O O O    O O O O)
           \/    \/
         To switch  To switch 
It COULD have also been a messed up controller, but I only have one 3rd party one at the moment. I wasted a KAJILLION early on in the project when I still sucked at soldering and electronics and such. I'm shocked at how much I've improved in one year on one project, both knowledge-wise and skill-wise.
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Post by MM007 » Sun Oct 22, 2006 11:48 am

I had the same issue on my SNES controller, but was never really sure how I fixed it. It works, I don't complain.
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Post by Kurt_ » Sun Oct 22, 2006 1:08 pm

As a final note:

The problem was the data line. The connection was poor, and everytime it goes off then on or shorts or something it messes the controller up. After the connector fell off, I soldered the data line to the capacitor on the bottom of the board, and good times were had.
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