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Pole Position Steering wheel encoder
seaner:
when things start to smoke, that usually means you're not going to get it to work ever again.
The +5 and gnd pins are probably whichever pins went to either end of that polartized capacitor. The ->->-> point towards the GND side. The other 2 pins would likely have been your X1/X2 pins.
_Iz-:
I had the same problem with my atari spinner, it would just "vibrate" when connected and spun. I covered every second hole in the encoder wheel with black tape and then it worked fine... (YMMV)
(my atari optic board didn't have the chip or capacitor)
_Iz-:
get it working eightbit?
GearHead:
It took a few days but I found my Pole Position board and was able to get it working with an Opti-PAC. The good news is that you may still be able to use your board even after you "smoked" it. I'm assuming that our boards are the same...
1. Unsolder and remove all of the components except those shown here - the sensor, the resistor closest to the sensor and the 4 pin header. You should end up with something like this...
2. Solder two wires at the locations indicated in purple. This will connect the outputs of the sensors to the header pins. You can double check if your board is the same as mine using this picture.
3. Change the Rotary Jumper on the Opti-PAC to A/HI
4. Connect your Opti-PAC up to the board. Make sure you get the power supply polarity right!
Hope this helps.
GearHead