Well into 2014, no posts for over a year? Ooooops...
Catching up: I got my built-from-junk quadrature encoder assembled.
It seems my sensors (paper presence detectors from printers) are not up to the task of seeing through my transparent encoder wheel, printed in black ink on overhead projector transparency sheets.
I was amazed how EXPENSIVE that stuff is ....wow! 3M still makes it but $50 for a pack of 10 8.5 x 12 sheets? Overhead projectors yeah, another "not-obsolete-but-abandoned" technology. \
I've noticed that as consumer grade tech rushes into the future, older but serviceable tech suddenly gets a little cheaper...then a LOT cheaper...then the price goes back UP...as the available stock dwindles down.
Punching holes in my encoder wheel for the benefit of these sensors is out of the question.
I wouldn't be able to cut small enough holes accurately enough.
I will be investigating other sensors...light sensitive perhaps, not IR sensitive like the paper sensors.
I have been working on other projects...I'll mention them in another post.
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