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Question about Jakks Atari TV-Game mod
nasachusetts:
Hello,
I am currently building an oversized Atari 2600 joystick for my sculpture class and have a question about wiring. I am using microswitches which will be soldered to a Jakks Atari TV game joystick and wondering if anyone knows where to solder the ground wire to on the board. Is there a specific location I should look for? Here are some pics of the inside of it
I could also upload higher res photos if needed. Thanks.
BobA:
A good starting point would be the neg on your battery compartment.
danny_galaga:
Do you mean a 'common' for the switches? Just follow the traces around and see if there is one. Might be easier to see if you take off all those yellow contacts. I know from hacking other controllers that sometimes not all the switches share a common. If in doubt, since there aren't many buttons, you can always just wire it up like for like, that is- two wires from the microswitch going directly to the two contact points for the corresponding switch on the pcb...
nasachusetts:
--- Quote from: danny_galaga on November 06, 2010, 11:07:30 am ---
Do you mean a 'common' for the switches? Just follow the traces around and see if there is one. Might be easier to see if you take off all those yellow contacts. I know from hacking other controllers that sometimes not all the switches share a common. If in doubt, since there aren't many buttons, you can always just wire it up like for like, that is- two wires from the microswitch going directly to the two contact points for the corresponding switch on the pcb...
--- End quote ---
Yes for the ground I meant common for the microswitch. I was planning on soldering speaker wire directly from the "NO" points on the microswitch to the corresponding contact points under the yellow contacts. I thought I had to daisychain all of the common wires to all the microswitches and then solder it to one point on the controller board. So are you saying that I could, instead of daisychaining, just have separate common wires on each individual microswitch going to each contact on the board at the same point as the "NO" wires?
RandyT:
You can only daisy-chain them if there is actually a common for all of the switches. It seems unlikely that so few buttons would require a matrix, but you can't assume anything here.
The best thing would be to use a multi-meter set to continuity and see if all of the switch pads have at least one side which is linked with all of the other switch pads. If so, you can do the daisy chain thing. Otherwise, you may have to mimic the wiring configuration of the pads on your physical switches, with a couple of wires each.
RandyT
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