gridprobe problem

Revilo wrote:

After running gridprobe.ngc, the values are written in a .txt file.
is it possible to transfer them directly into my program so that the z-values will be corrected automatically?

Are you trying to correct for a non-flat workpiece?

If you google for "probekins" you might find some interesting pointers. This is a "partially solved" problem.
The main link would be: wiki.linuxcnc.org/cgi-bin/wiki.pl?ProbeKins

It might be possible but that depends on the function of the spinbox... so far not enough information has been revealed to answer your question.

John

Revilo wrote:

i built a spinbox with pyvcp for typing in some values. now i want linuxcnc to integrate it in my g-code. is this possible somehow?

Probably. Typically you would connect the spinbox output to the analogue-input pins (motion,analog-in-00 etc) which are then readable from G-code with an M66 command.
(There are rather more layers than you might expect)
www.linuxcnc.org/docs/html/gcode/m-code....ec:M66-Input-Control
www.linuxcnc.org/docs/html/config/emc2hal.html#_pins
www.linuxcnc.org/docs/html/hal/intro.html

Revilo wrote:

also i dont understand completely what probekins is and what it is doing.

In LinuxCNC kinematics modules convert the XYZ positions from G-code into "joint" positions. Typically a joint is a machine slideway and motor, but can be the elbow of a robot, or the length of a string or the extension of a hydraulic cylinder, for example.
Most machines are laid out so that the axes and joints correspond 1 to 1. These are called "trivial kinematics" machines. An example of a very non-trivial kinematics machine would be a hexapod. (nice example here: )

Probekins is for a machine where the Z-height varies because the table or work is not flat. It allows you to probe the work or the table, build an STL file to describe the shape of the table or work, and then the Z axis will track at a constant height above the work as XY change.

That might or might not be what you want to do.

probe2stl is here: git.mah.priv.at/gitweb/emc2-dev.git/blob...ematics/probe2stl.py