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protoloft / klipper_z_calibration

Klipper plugin for self-calibrating z-offset
GNU General Public License v3.0
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offset calculate #78

Closed Reneeetje closed 1 year ago

Reneeetje commented 1 year ago

My position of endstop is 8 mm above bed, i own a ender 5 plus and that is the only way i can use this and autoz. But auto z is performing good, does al the calculation. But the offset is always wrong and i cannot figger out why. I did position_endstop = 8, afther calibratez and g90 g0 z10 my nozzle is way to close to the bed.

// Z-CALIBRATION: ENDSTOP=8.000 NOZZLE=8.009 SWITCH=13.379 PROBE=6.777 --> OFFSET=0.786250

what could this be? is there another offset i have to use?

Nelus82 commented 1 year ago

I'm having the same problem. My endstop is the same height as my bed (position_endstop = 0). Everytime when I do a Z calibration it gives me a Z-Offset: 1.2

The probe z_offset does nothing.

RcTomcat1 commented 1 year ago

I am experiencing the same issues after updating klipper and moonraker to the latest versions...Yesterday my printer was doing fine, today it crashes the nozzle

LaRenard commented 1 year ago

I've recently added a mod to a printer and set up auto-z but it appears to be doing the same behaviour described here, my endstop is 4mm above the bed which I've set in stepper_z config Manually doing the probe calibration I get 4.x mm which I added to my probe config but the auto-z is always touching the bed when the print starts:

Z-CALIBRATION: ENDSTOP=4.015 NOZZLE=4.012 SWITCH=8.088 PROBE=4.663 --> OFFSET=0.137500

TitusLabs commented 1 year ago

Have you been able to solve this in the meantime?

I have not observed such behavior with my printers. Especially since the plugin should be very independent from the rest of Klipper at its core. And it can't be related to a Moonraker update.

A correct auto calibration does not depend on the values z endstop position or z probe offset - although it is advisable to set them reasonably accurately.

Nelus82 commented 1 year ago

Yes, the problem was the heightmap. It was 1.2 mm off. I had to create a good mesh at 0 (with probe z_offset). And then the z calibration is almost perfect.

You can also disable auto load mesh.

TitusLabs commented 1 year ago

Ok, great! Most problems are related to bed mesh. Then I will close this ticket..