2014-03-13 22:06 GMT+02:00 Charles Steinkuehler <[email protected]>:

> When the joints are homed, the Y world coordinate is not zero, and I
> don't see how to tell LinuxCNC what the home value is supposed to be
> without using forward kinematics (which I don't have) or the
> kinematicsHome() function, which is apparently not used.
>

There is HOME parameter for each joint in INI file. And then there is also
another HOME parameter in [TRAJ] section as well:
http://www.linuxcnc.org/docs/devel/html/config/ini_config.html#sub:TRAJ-section

It seems like that it really means cartesian axes instead of saying "axis"
while meaning "joint", so you could try to home joints to a position, where
you know its cartesian position as well (and save that cartesian position
in that HOME parameter from Traj section).

Thanks for the link, that machine seems like kinematics nightmare. Sorry,
but it scared away that little tiny willingness that I had to go through
your equations :(

And you can always increase ferror limit in INI file to avoid those errors,
if you cannot get it sorted out for the show. The problem of wrong geometry
of printed parts still remains...

Viesturs
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