Stage 09: Auto-Calibration

Check your probe assembly:

Check you're able to press the stainless steel ball to trigger the switch.

Check that the bolts holding the switch in place are secure.

Run the cable for the probe down to the base through the beds cable loom.

The 4-pin header side of the cable should go into the base.

Plug the 4-pin header into the Octopus Max board.

Cut the magnetic base to gain access to the mounting hole for the probe.

Fix the probe to the platform with the included M5x20mm bolt.

Plug the cable into the probe.

Power up the printer.

Download the tools_calibrate.py file here.

Use Termius to copy (drag and drop) the tools_calibrate.py file into the ~/klipper/Klippy/Extras folder.

Instructions for using Termius can be found in the previous stage here.

After copying this file across the printer needs to be powered down and restarted.

Add the calibrate-offsets.cfg file to your config files folder.

Also check that your printers other config files are also up to date.

Check the probe position by moving the first print head directly over it.

Make a note of the X/Y positions.

Enter these values into the calibrate-offsets.cfg file here.

Place the flexplate back onto the platform in front of the probe as shown.

Home the printer.

Make sure that all of the print heads are docked.

Run the calibration command.

Offset values are presented in the Mainsail console.

Enter the offset values into the variables.cfg file for each print head.

UPDATE: Values are now automatically saved into the variables.cfg file - update to latest tools_calibrate.py file from 01/06/24

Probing is typically accurate to +/- 0.05mm

Save and restart to resume printing.

Remove the probe and restore the flexplate to its normal position. The probe cable can be tucked under the bed.