Mark

### mcu 'mcu': Unknown command: I2C_BD_send or mcu 'mcu': Unknown command: Z_Move_Live This error is from the firmware of mcu, need to compile and flash the new firmware into the...

seems that the mcu didn't flash success or check if there is BD_sensor.o on the SSH while run compile command `make `

could you attach the klippy.log file, actually, I recommend people to use the collision_homing and collision_calibration that will be more accuracy than manual calibration. in most case, the problem for...

Ideally, the first value should be 20 greater than the second value that is hard to do with manual calibration. > 18:08:58 243 at 0.2mm > 18:08:58 220 at 0.1mm...

There is a new update of the BDsensor.py that can detect the z_offset changed(homing with different bed temperature or the nozzle is not clean or plate changed ... ) >=0.05mm,...

from here `BDsensorVer:V1.2c,switch_mode=1,collision_homing=1,collision_cal=0` , it is still the manual calibration and the difference between the first 2 number is less than 10 397 at 0.0mm 403 at 0.1mm > >...

not 0.5 but 0.05mm that is within 0.1mm, so the problem is how to fix the first 2 data in calibration, need to maker sure the difference between the first...

seems here is the problem, the bed temperature is not stable. 

No problem. BTW, there is another command `M102 S-7` that can help you to get the raw real time data from the sensor. > Yes, the bed is heating up...

I think I find there is a software bug here that I don't consider the z_offset. you can try to set the z_offset to 0 in the cfg first. I...