On Thursday, February 24, 2022 6:58:51 PM EST Thaddeus Waldner wrote:
> Which components do I need to get this working? I have it set up with a
> stepgen that is set up like the other axis. When I move the encoder
> the dro and backplot display changes but I get a following error.

That is likely because motion is aware its moving, but there is no 
feedback of a signal showing that it has moved to show motion it is 
following orders.  I have a pair of 100 ppr dials on my sheldons 
replacement apron, which I use to drive it since there are no cranks on 
mine, motors having replaced the cranks.  And I just spent 20 mins 
studying my hal file to find that coupling, but that hal file is now 
several years old, and apparently not well enough commented to let me get 
my ancient head back into what I was thinking back then. At 87, can I 
plead oldtimers?

Bear in mind that halshow doesn't show pins that aren't hooked up to 
something, so read the man pages carefully to find the correct pin names 
for your setup. One way is to define a netname, and feed it a likely 
sounding pin from the manpage list of pin names which will then cause 
that pin and its behaviour to be shown in halshow or in halscope. The 
likly suspects names may end in .fb. The output of the encoder watching 
your dials should probably be tied to this .fb pin in the .hal file.

I hope this is helpfull.

I can post that .hal file if you think it might help, but its got huge 
pieces of gingerbread in it too.  That may be helpfull and it may just 
confuse. Yell if you want it.

Take care & stay healthy.

> > On Feb 24, 2022, at 2:08 PM, andy pugh <bodge...@gmail.com> wrote:
> > 
> > On Thu, 24 Feb 2022 at 17:44, Thaddeus Waldner <thadw...@gmail.com> 
wrote:
> >> Can anyone point me to a working example of this, or maybe point out
> >> what I need to do with homing?> 
> > Set HOME_SEARCH_VELOCITY to zero and it will home to zero wherever it
> > is (ie, without attempting to move)
> > You also need to add a HOME_SEQUENCE for the dummy axis.
> 
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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, 1940)
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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