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| FIXED!!! Pole Position wheel/opto to Mini-Pac |
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| Texasmame:
On a final note for search purposes for those having similar problems: Andy suggested tying two 1K OHM resistors from the signal pins to the ground pin to pull the signal down. You MUST do that to have an Atari Pole Position or APB opto board work with a MINI-PAC. So, be sure of your wiring (Black = gnd, brown = 5v or, better yet, confirm via a multimeter) and tie down those signals to the ground. The end. :blah: |
| Texasmame:
Someone wrote me today and asked for pics of the opto with the resistors attached. He got the pics and I figured I would add them to this thread as well to hopefully help others in the future. . . |
| Paladin:
Still no go on my optic board, it's the same board as yours (I have several). I just added 1/4 watt 1k ohm resistors from signal wires to ground, just like you did - but now I get 4 flashes of the error LED on the Mini-PAC. I plug the harness into an optic board with no resistors and get no error code, but it still doesn't work because I get 5v on both signal lines. I'm even more confused than I was before. |
| Texasmame:
--- Quote from: Paladin on March 26, 2007, 10:16:51 pm ---Still no go on my optic board, it's the same board as yours (I have several). I just added 1/4 watt 1k ohm resistors from signal wires to ground, just like you did - but now I get 4 flashes of the error LED on the Mini-PAC. I plug the harness into an optic board with no resistors and get no error code, but it still doesn't work because I get 5v on both signal lines. I'm even more confused than I was before. --- End quote --- You double-check the wiring of the mini? As mentioned earlier in this thread, the 5v and ground wires may be swapped. . . |
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