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Need Dimensions of Trackball Opto PCBs
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Bgnome:
i looked into that, but I cant seem to find a local supply for those things.  radio shack has a matched ir emitter/receiver set for $3.29, and you would need 2 for each board.

digi-key has these in stock but charges $5 for orders under $25.

neither is a very cost effective solution.  i was hoping to accomplish something similar to what you were planning to do.  there is a couple pictures of how one person magaed it on http://www.cheeptech.com/cuhack.html down at the bottom of the page..
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