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FIXED!!! Pole Position wheel/opto to Mini-Pac

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Texasmame:

--- Quote from: Kremmit on October 30, 2006, 01:15:01 pm ---

Yeah, if you have the x wires backwards, you'll just get backwards motion- spin the wheel right and the cursor moves left.  Get your x wires shorted somewhere, and you'll get the jittery cursor I had above.  Get the +5/gnd backwards, and you'll get nothing at all, except possibly a dead opto board.  (although I've done it more than once, and never smoked one yet)



--- End quote ---

I even tried reversing the 5 and gnd on one board which, I guess, is the arcade troubleshooting version of looking behind the couch for your keys.  No smoke, but still no movement.   :-\

Texasmame:
Anyone else with any ideas or, perhaps, a known working opto board to sell/trade?  :(

Kremmit:
Didja try it with the mousie?  Have you tried hooking anything else up to the Minipac to verify that it isn't the problem?

Or, make me an offer on the wheel / opto I tested with.  Wheel has a good center decal, too.  ;)

Texasmame:

--- Quote from: Kremmit on November 01, 2006, 12:26:23 am ---Didja try it with the mousie?  Have you tried hooking anything else up to the Minipac to verify that it isn't the problem?

Or, make me an offer on the wheel / opto I tested with.  Wheel has a good center decal, too.  ;)

--- End quote ---

Fortunately, I won't need your wheel.  ;)

Well, the mouse hack works fine.  Been in touch with Andy from Ultimarc and he suggests this:

It maybe that the boards are configured as an active-low configuration. If this is the case, it would be necessary to connect resistors from each X line to ground to pull down the signal. Resistors of 1 K ohm could be tried. Then measure the voltage change, if any , again with covered and uncovered.

So, I'll be off to get some of them there resistors and advise from there. . .

One thing still confuses me here, tho.  If the opto works with the mouse hack AND I get voltage changes on the X pins when using the mouse hack while the optos are blocked, why wouldn't I still get voltage changes on the X pins with the optos blocked when hooked up to the MINI.  I mean, a ground's a ground and 5 is 5  -  right?   Seems I should get voltage changes on the X pins with my multimeter regardless of the 5V and ground source used. 

trcroyle:
I'd also try running a dedicated 5v line from the pc power supply.

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