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Reply to "Rotary binary encoder"

Stephen,

My knee-jerk reaction is that a reflective device would be too prone to error.

I measure some courses, and many time calibrate, during darker periods when cars have lights on. If I passed in front of one of the newer cars with really bright headlights, I can imagine false readings. Or, sunlight reflecting off of a shiny surface in a concentrated beam.

I, for one, would not trust a reflective unit.

Just my thoughts.
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