Marlin 1.1.9 auto level

Quote
MikeCL
I seem to have it working ok now but the G29 command the offset I was given for the type of sensor I have seems not to be right as when it homes the sensor is off the build plate and never senses the bed so the nozzle crashes into the bed.. I entered it in 100% as it was given.

• X and Y endstop positions - make sure that X_MIN_POS and Y_MIN_POS (assuming you have X-min/Y-min endstops) are set such that the front-left corner of the bed is X=0, Y=0. This may mean that X_MIN_POS and/or Y_MIN_POS may be negative! For example, on my AM8 X_MIN_POS is -33 and Y_MIN_POS is -6.
• Bed size - X_BED_SIZE and Y_BED_SIZE should be set to the actual size of the bed.
• Probe offset - X_PROBE_OFFSET_FROM_EXTRUDER/Y_PROBE_OFFSET_FROM_EXTRUDER need to be set correctly.
• Z_SAFE_HOMING - it is very important that this is set. If everything else is set as described above, this will mean that the Z homing move should be done with the probe in the very center of the bed. Note that in this case the nozzle will probably not be in the center of the bed when homing.
• Optional: If you're using a capacitive or inductive probe, ensure that you set MIN_PROBE_EDGE to ensure that the very edges of the bed aren't probed, since that kind of probe can be inaccurate near the edges. If you're using a contact probe like a BLTouch you can reduce MIN_PROBE_EDGE, if you're using an inductive/capacitive sensor leave it at the default of 10 or even increase it if you get inaccurate probing near the edges.