'Good point.
'Also a good point. It's a bit harder to implement, however, and less flexible in terms of the target.
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2 years ago
Optimize a TCRT5000L
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2 years ago
If you could ensure the target (presumably a rotating cylinder) was , say, 1" diameter, you could blacken it and apply a 1/4" strip of aluminum tape for the mark. It should be possible to get quadrature with two sensors at 1/8" shift in the circumferential direction. The coil winders I've used had a Jacobs chuck for a holder, and such chucks have a cylindrical girth available.