On Friday 18 December 2020 02:56:53 Chris Albertson wrote:

> This is not LCNC specif, but just motion control...
>
> Many times the secret is to do the homing twice.  Once at full speed
> and as you note it overshoots.   Then backup up until you bump the
> switch again then finally move as you say as 0.1 degrees per second. 
> You don't need to actually stop at the home, just note the encoder
> count as you pass as the switch trips
>
> Look at you 3D printer for inspiration.  I think it goes fst to get a
> rough-homethen hits it slow a few times to take an average.

My ender 3 only hits it twice, second time quite slow.

> Also for a rotary table I wonder if you could use a push button on a
> control pannel.   You define home to be whatever you want.   For
> example if you need to make 20 cuts to cut a gear, do you care where
> the firth tooth is on the black?

Generally no, Chris, but there will be times, like when a gear already 
has the keyway cut. :)


Cheers, Gene Heskett
-- 
"There are four boxes to be used in defense of liberty:
 soap, ballot, jury, and ammo. Please use in that order."
-Ed Howdershelt (Author)
If we desire respect for the law, we must first make the law respectable.
 - Louis D. Brandeis
Genes Web page <http://geneslinuxbox.net:6309/gene>


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