I have been fighting my z-prob for a week or so now. I am using the sensor that came with my kit which is
this one. My procedure to set the off set is as follows:
G28 - Home All Axis
M851 Z0
G28 - Home All Axis
M851 Z-0.XX
Paper test
Find the value then use M500 to save in EEPROM
M501 to check if it saved.
Change Slicer ZOffSet to match the variable.
The printer will do the auto leveling but it is always to low. I have tried setting the Slicer ZOffSet to zero that didn't change it. I have tried to change the off set with M851 to 0 and it prints way to high. Anything lower then the value it smashes the bed. I have another sensor found
here. I dont know if it's the senor or if it's something I am missing. All help is appreciated.