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Proper grounding
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MYX:
Randy rocks.


That's all I can say.
coasternuts:
Yes Randy rocks!  It turns out that if you use an Ultimarc Trackball with the Opti-Wiz then you need to place a 1K ohm resistor between the +5 and the data lines. 

Just thought I would reply in case others end up with the same issue.

Thanks Randy!
lettuce:
So i take it all the grounds/COM for buttons and joystick on the CP go to the ground terminal on a I-PAC too?? If So what else can be grounded to this terminal??
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