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Is this CP doable? Stupid?

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Ninten-doh:
Thanks Mark!  I was thinking of using a Happ trackball interface (USB) to connect it to the PC, but the Opti-Wiz sounds like a cheaper alternative.  Does the Opti-Wiz need a power supply or does the USB provide the power?  If I understand correctly, one of the benefits of the Happ interface is that you don't need to connect it to a power supply.  But I could be totally confused about that.   :laugh:

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