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Troubleshooting Trackball Optics
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Bgnome:
so how did the IC schematic help?  did you directly solder everything to the IC?
brained:
It really helped, It showed the information the pinout of the IC, for example pin1 5v, pin2 X1, etc... the connection diagram everything. Its really helpful.

Here's the link so you can check it out!! really cool!

http://www.cs.usfca.edu/~cruse/cs630/em84502.pdf

Very instructive!!  ;D

*edit* inserting hyperlink
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