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Mini-PAC to spinner wiring problem FIXED!
Paladin:
Well, a little more searching on the board may have turned up the solution. I found a thread from Texasmame showing my same problem, and how he made it work:
http://forum.arcadecontrols.com/index.php?topic=59560.0
Paladin:
Yarg! Still no luck getting my spinner to work. I tried adding 1k resistors from signal pins to ground pin as suggested in the other thread, but that makes the Mini-PAC blink an error code of 4 flashes. I tried two different optic boards with the same result. I plug in an unmodified optic board and get no error codes, but a solid 5v on both signal pins.
Why is it so hard to get one of the most common optic boards to work with one of the most popular encoder boards?
BobA:
Texasmame said that his 5V and GND wires were reversed from those in the minipac drawing going to the spinner. The ultimarc drawings shows 5V as black and Gnd as brown.
To Quote Texasmame
"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."
Did you confirm with a multimeter whether your harness is wired as Texasmames was or as the Ultimarc drawing shows?
Paladin:
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.
BobA:
Do you have a pic of the top side of the board showing the components. I'd like to draw the circuit and see if I can understand what might be happening for you not to get any voltage transistions.
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