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| Mini-PAC to spinner wiring problem FIXED! |
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| Kremmit:
--- Quote from: Paladin on March 27, 2007, 11:44:16 am ---I checked online for the Atari optic pinout before wiring it up. I didn't just trust that the Ultimarc diagram matched my optic board. My wires are hooked up like the optic board pictured below. I haven't tried swapping the power and ground, as I'm pretty sure the photo shows the correct position. --- End quote --- I think you and I are reading Tex's comments differently. I understood him to be saying that the +5 and Ground were reversed on the Ultimarc side, not the Atari side. But maybe I'm wrong. :dunno |
| Kremmit:
OK, I got off my butt and hooked up a duplicate optic board here, it is working fine on an Opti-Wiz. I can confirm your pin assignments on the optic board. I don't have a Mini-Pac to test with, at least not yet. Ordered one yesterday, though. |
| Paladin:
Thanks for the help guys! I'll be out of town for a week, so I won't be able to mess with it for a while. BobA, I wasn't getting any voltage differences without the resistors - just a solid 5v. Once I put the resistors on I did get a swing when moving the encoder wheel. I think it was a high of 2.5v and a low of about .7v, but I don't have time to check it before I leave. I have no idea why I'm getting 4 flashes of the LED with the resistors and none without. I've only got 1sw1 1sw2 and the spinner hooked up, 4 flashes looks like player 2 joystick right on the Ultimarc error code list. Could the voltage still be too high? Maybe if I try 1.5k resistors to pull the signal down even further. Oh well, I'm going to try and forget about it while I'm on vacation. |
| RandyT:
--- Quote from: Paladin on March 28, 2007, 04:58:57 am ---I think it was a high of 2.5v and a low of about .7v ....<snip> Could the voltage still be too high? Maybe if I try 1.5k resistors to pull the signal down even further. --- End quote --- I've never used the hardware in question, but from a basic digital electronics standpoint, your high doesn't sound high enough. Also, going from a 1k to 1.5k resistor between the signal and ground won't pull the signal down more. It will increase the amount of resistance and allow the signal to remain at a higher level. That being said, it sounds like you are heading in the direction you need. Check with Andy to see what components are recommended, but I would try a 10k and work my way lower until it is stable and working. RandyT |
| BobA:
Have a good holiday. I sure it will get sorted out when you get back. :cheers: |
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