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Atari 5200 Folly: Scratch-built Controller

Posted by BigO, 01 December 2007 · 128 views

Atari
I'm finding that I enjoy messing with the peripheral stuff more than actually playing video games. My last controller mod is really the only reliably functioning 5200 joystick that controller that I have. My other controllers are a trackball and a couple of flaky stock 5200 controllers.
(Previous modded controller was a 5200 trackball converted to a joystick. I've decided to sell it if you're interested: http://www.atariage....?s...117017&hl=)

Anyway, I'm not a fan of the 5200 stock controller so didn't want to invest in rebuilding my "real" controllers. I've been accumulating bits and pieces that I thought would be useful for this project, so I finally decided to start on it.

Here's the first mockup:

Attached ImageAttached Image

I placed the controls based on the best guess I could make using my own hands. Once it's working, I'll probably have to make adjustments before the final version.

It remains to be seen if there's enough range in the potentiometers of the thumbstick to work with 5200 games properly. If it doesn't work, I have a less extensive fallback plan. Either way, I have additional plans for it eventually.

The beige faceplate is a chunk I hacked out of the back of an old PC/XT keyboard. I had been visualizing black, but surprisingly I like the look with the beige. The keypad is a surplus piece I got cheap. The red fire buttons were extracted from a generic PC game controller. The silver start/pause/reset buttons were donated from a discarded Sudoku handheld. The case was a surplus piece I picked up cheap.

(This was hacked together with simple hand tools so don't get too carried away with scrutinizing the work. :))



Edit 12/8/07 - updated picture with the alternate thumbstick
Attached Image




Very, very cool. :)

That would almost make me want to pick up a 5200.

Almost. ;)
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Nathan Strum, on Sat Dec 1, 2007 5:20 PM, said:

That would almost make me want to pick up a 5200.

Wow. Now that's a compliment. :)
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Got all the buttons mechanically fastened in and operable today.

I did have to switch out the thumbstick with one I took out of a 3rd party Dreamcast controller. The Playstation controller's potentiometers are only 10k ohms. I didn't have any luck getting it to work. I think the resistance delta isn't high enough for the 5200. With the right capacitors, I could get the player on Space Invaders to move, but just barely.

Maybe I'll have time to start wiring tomorrow.

(Interesting that I can't attach pictures to anything but the initial post.)
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Got 'er all wired and tested. Works like a champ, mostly. I've got something strange going on with the keypad I think. The * and # keys work fine to select options on Pacman, but not on Star Raiders. Not sure what's going on. I'll have to do some more testing to see exactly what the failure is.
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May 2012

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