using HAL to correct axis errors

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18 Feb 2018 08:47 #106115 by Mike_Eitel
I like your true diy

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18 Feb 2018 15:14 #106135 by pgf
I think "true diy" might be a euphemism for "doesn't work all that well". :-)

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18 Feb 2018 15:24 #106136 by Mike_Eitel
But its fun to think about and tinker.
Have fun!

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28 Feb 2018 17:22 #106725 by andypugh
There is also a special kinematics file that can be used to correct a skewed machine:
wiki.linuxcnc.org/cgi-bin/wiki.pl?Contri...y_XY_skew_correction

That might not work so well with a gantry machine, it predates joints-axes.

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28 Feb 2018 17:32 #106728 by pgf
thanks andy. guess that could have saved me a bit of work. oh well -- it wasn't hard, and i enjoyed it. and what's most important....

MY MILL CAN CUT RIGHT ANGLES!!!

there. just had to say that. :-)

paul

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28 Feb 2018 19:03 #106739 by Mike_Eitel
Nice to read from a happy man!
The following user(s) said Thank You: pgf

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04 Sep 2022 09:43 #251158 by LAUSCH
Hi paul,

Can you explain why you set:
option singleton yes;
If you do this you will get errors from the lines in HAL:
addf nonsquare-table.0.cmd servo-thread
addf nonsquare-table.0.fb servo-thread

I have thus comment the line
//option singleton yes;
And LinuxCNC starts without error.

Cheers
Christian

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04 Sep 2022 18:00 #251178 by pgf
Well, I clearly didn't get errors from that code when I last ran the mill. I had to look up what the "singleton" option does -- it seems appropriate for this module, since you can really only have one of these components per system. But perhaps you're running a newer version of hal, with tighter restrictions on naming.

paul

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