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Need Dimensions of Trackball Opto PCBs
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..