On Sun, 28 Oct 2018 at 07:17, Chris Albertson <albertson.ch...@gmail.com> wrote:

> Or switch to the other method.   Rather then count "ticks" you count the
> microseconds between the ticks.

The Mesa encoder counter already does this.

It may be that the home-made encoder does actually have some angular
noise, so the measured speed does change.
Typically this doesn't matter for spindle-synch moves, which track the
measured position, not the velocity.
So just lowpass the spindle speed before displaying it, and forget about it.

-- 
atp
"A motorcycle is a bicycle with a pandemonium attachment and is
designed for the especial use of mechanical geniuses, daredevils and
lunatics."
— George Fitch, Atlanta Constitution Newspaper, 1916


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