[clug] O/T Digital Position sensing

Keith Goggin keith.goggin at bigpond.com
Mon Nov 2 17:11:42 MST 2009

Could anyone recommend some light reading on Digital Position Sensing?

I need to know the position of a shaft that can rotate through about 90 
Degrees. I have tried a rather crude setup with a micro-switch but I 
require something a little more sophisticated.

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