Roland Jollivet wrote: > > My arithmetic may be way off, but I don't understand any of the above. > Where does 1.5 and 4 and 5 come into it? > CPR is taken to mean "CYCLES per rev", and so counting all quadrature edges, you get 4 times that many counts/rev. That's where the 4 comes from. There is a 1.5:1 belt reduction ratio from motor to leadscrew, and a 5 TPI leadscrew.
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