Internal error on command:"BED_MESH_CALIBRATE"

[legacy23]

Hello @markniu

I am not able to complete Bed Mesh. Keep getting error "Internal error on command:"BED_MESH_CALIBRATE"" with a "'NoneType' object is not subscriptable" and klipper shutdowns when this happens. Here is my config and klippy.log

M102 S-1 BDsensorVer:V1.2bpandapi3d.com ,switch_mode=1,collision_homing=1,collision_cal=1

// 1015 // 1015 // 1015 // 1015 // 1015 // 1015 // 1015 // 956 // 956 // 956 // 956 // 949 // 934 // 915 // 892 // 856 // 849 // 825 // 802 // 776 // 751 // 725 // 698 // 673 // 645 // 621 // 593 // 569 // 545 // 520 // 496 // 472 // 449 // 426 // 404 // 382 // 361 // 340 // 320 // 308 $ M102 S-5

[stepper_z] step_pin: PB6 dir_pin: !PB5 enable_pin: !PC3 microsteps: 16 rotation_distance: 8

endstop_pin: ^PA7

endstop_pin: probe:z_virtual_endstop

position_endstop: 0.0

position_max: 250

position_max: 300 position_min: -8 homing_speed: 5 second_homing_speed: 1 #set this to 3 if homing with collision homing_retract_speed: 20 homing_retract_dist: 3

[BDsensor] sda_pin: PB1 scl_pin: PB0 delay: 10 z_offset: -0.6 z_adjust: -0.3 x_offset: -45 y_offset: -7

no_stop_probe:

position_endstop: 2.0 speed: 0.8 collision_homing: 1 collision_calibrate: 1

[bed_mesh] speed: 120 mesh_min: 30,30 mesh_max: 200,210 probe_count: 6,6 horizontal_move_z: 1 algorithm: bicubic zero_reference_position: 115,115

klippy.log

[markniu]

Hello, you can remove the# which is in front of the no_stop_probe:

[legacy23]

Thanks Mark, finally got a my Mesh, I thought “no_stop_probe” was optional.

I am still having a hard time setting the z_offset, to get a good first layer I am required to have around 1mm or more and z_offset allows only 0.6mm.

Is the firmware 1.2c required to for it to auto z_offset?

[markniu]

hello, you can try this: add position_min : 0 in the stepper_z section https://www.facebook.com/share/p/TES9gj6L5Ys49YYg/

[markniu]

Thanks Mark, finally got a my Mesh, I thought “no_stop_probe” was optional.

I am still having a hard time setting the z_offset, to get a good first layer I am required to have around 1mm or more and z_offset allows only 0.6mm.

Is the firmware 1.2c required to for it to auto z_offset?

this “no_stop_probe” is optional now, and I fixed it by sync the code from the latest official klipper.

it should no need to set the z_offset and recommend to keep it to 0 if you have enabled the collision_homing,