Setting up Auto Z Calibration - Probe samples exceed tolerance errors

[JohnInOr]

 

I am trying to set up the klipper_z_calibration plug in for the first time.  On an LDO Voron 2.4 with Klicky Probe.  Homing,  QGL and bed mesh complete without any errors.  

When I run calibrate_z, the klicky probe is attached and then the probing with the nozzle to the z endstop starts.  It always fails with “Probe samples exceed tolerance”.  This is the console output:

12:24 PM Probe samples exceed tolerance
12:24 PM probe: TRIGGERED
12:24 PM probe at 202.800,297.600 is z=-0.737500
12:24 PM probe at 202.800,297.600 is z=-0.765000
12:24 PM probe at 202.800,297.600 is z=-0.765000
12:24 PM Probe samples exceed tolerance. Retrying...
12:24 PM probe at 202.800,297.600 is z=-0.738750
12:24 PM probe at 202.800,297.600 is z=-0.763750
12:24 PM probe at 202.800,297.600 is z=-0.763750
12:23 PM Probe samples exceed tolerance. Retrying...
12:23 PM probe at 202.800,297.600 is z=-0.740000
12:23 PM probe at 202.800,297.600 is z=-0.762500
12:23 PM Probe samples exceed tolerance. Retrying...
12:23 PM probe at 202.800,297.600 is z=-0.740000
12:23 PM probe at 202.800,297.600 is z=-0.762500
12:23 PM probe at 202.800,297.600 is z=-0.762500
12:23 PM probe: open
12:23 PM moving to a safe Z distance
12:23 PM Attaching Probe
12:23 PM calibrate_z

 

 

[claudermilk]

Look in your printer.cfg file under the [probe] section. Try changing the samples_tolerance to a larger value. It looks like you're failing out at about 0.03 difference.

[JohnInOr]

4 hours ago, claudermilk said:

Look in your printer.cfg file under the [probe] section. Try changing the samples_tolerance to a larger value. It looks like you're failing out at about 0.03 difference.

Thank you.   I realized that the XY coordinates for the Z endstop were causing the nozzle to hit near the edge of the plunger rod.  I adjusted the XY to get closer to the center of the rod and while I still see occasional retries, but the probing ends up completing.  I can look at changing the tolerance if I need to.

[claudermilk]

Yeah, that would be an issue too. It's part of why I went with hartk's Sexbolt kit to give myself a bigger target. Now with Tap that's moot.