Getting Probe triggered prior to movement.

[dborio]

I just did a fresh install and keep getting Probe triggered prior to movement when trying to run the Full Calibration, Bed Level or Height Map. I can of course bypass it when the printer restarts and use the printer.

[robertsamples]

you should run the LOAD_CELL_TARE command with nothing on the bed and then save_config and retry.

[latispinus]

Same problem, entering the command doesn't help, the error occurs at different points on the bed

[nseverov1-sketch]

I think I found a solution. 1. I used the LOAD_CELL_TARE command at the point where the printer malfunctioned. Then, I used save_config. Then, I ran the straingauge z home macro from the web interface. Then, I used save_config again. After that, I took three full grids of the table at different temperatures, without a single error. (60,80,100 degrees C)

[latispinus]

not working for me

[latispinus]

Scan completed successfully only once after ten failed attempts and stopped working again
Everything works just fine with the default firmware

[nseverov1-sketch]

I forgot the most important thing: before everything, I washed the Z-axis screws and lubricated them with liquid oil. Maybe dirt and thick grease with dust cause stiff movement and false activations of the tensioner. Check it out.

[robertsamples]

@latispinus
if you already did load cell tare and that did not resolve it your strain gauges may be giving a different than expected response scale. you can try LOAD_CELL_CALIBRATE which will have you tare again, then place a weight of known mass (aim for around 4 kg) on the bed and run the calibrate command with the number of grams on the bed.

EDIT: latest version only requires 1kg for calibration

[nseverov1-sketch]

If I have a precision F2 class weight weighing 2kg, can I use it on the new firmware?

[latispinus]

@robertsamples
I tried these instructions
first under a 1 kg load and it produced this:
14:54 ERROR: Tare and Calibration readings are less than 1% different!
Use more force when calibrating or a higher sensor gain.
14:54 Calibration value: 1.38% (116046), Counts/gram: 25.34500, Total capacity: +/- 325.40Kg
14:54 CALIBRATE GRAMS=1000
14:53 Now apply a known force to the load cell and enter the force value with:
CALIBRATE GRAMS=nnn
14:53 Load cell tare value: 1.69% (141392)
14:53 tare
14:52 Starting load cell calibration.
1.) Remove all load and run TARE.
2.) Apply a known load, run CALIBRATE GRAMS=nnn.
Complete calibration with the ACCEPT command.
Use the ABORT command to quit.
14:52
LOAD_CELL_CALIBRATE

then under a weight of slightly over 4 kg (4,136 g), and I got this:
15:00 Accept calibration with the ACCEPT command.
15:00 WARNING: Load cell capacity is more than 25Kg!
Check wiring and consider using a higher sensor gain.
15:00 Calibration value: 0.40% (33349), Counts/gram: 26.12258,
Total capacity: +/- 315.71Kg

I tried applying the changes, and when measuring the bed, I got this:
15:11 Probe samples exceed samples_tolerance

Upd: When using the BED_MESH_CALIBRATE_WITH_WIPE macro, it again throws the error "Probe triggered prior to movement."