Bob,
here is an example of the encoder setup/Bartels system that I built from the
ground up.
http://www.iceinspace.com.au/forum/s...ad.php?t=42151
This thread, in hindsight, I gave a silly title, not well thought out at
all.
Anyway, it is an improvement in accuracy of the encoder option
that can be added to Mel Bartel's system using old optic mice parts.
I can't speak highly enough of the Bartels stepper drive.
Steve