The new klipper documentation doesn't say anything about a query function.... will it still work? If not any reason I shouldn't just stay with the plugin?

Im on a 24. Voron with 4 Z stepper motors stepper_z - stepper_z3. defined as bellow.

Is config, z_stepper: stepper_z , still correct?

The frame compensation appears as if its functioning. Doesn't throw an error, and the query looks as it should. But i dont think it is functioning. I cranked up the temp_coeff: 0.03 producing -0.12mm on a 23min first layer. and it appeared to have no effect. I previously used a manual correction of -0.06mm to correct going into the second layer.

So I'm at a bit of a loss. I suspect something is not working correctly.

Im also using 'virtual gantry backers' and have created a corresponding issue there as well. I would appreciate any thoughts or input.

https://github.com/Deutherius/VGB/issues/3

printer.cfg

[frame_expansion_compensation] temp_coeff: 0.03 ##0.0009 temp_sensor: temperature_sensor ToolHP max_z_offset: 0.12 z_stepper: stepper_z

[stepper_z] ## Z0 Stepper - Front Left ## In Z-MOT Position step_pin: PD14 dir_pin: PD13 enable_pin: !PD15 rotation_distance: 40 gear_ratio: 80:16 microsteps: 16

position_max: 330 ##<<<<<<<<<

endstop_pin: ^PA0

position_min: -5 homing_speed: 32 second_homing_speed: 3 homing_retract_dist: 3

[tmc2209 stepper_z] uart_pin: PD10 interpolate: True run_current: 0.8 hold_current: 0.8 sense_resistor: 0.110 stealthchop_threshold: 0

[stepper_z1] ## Z1 Stepper - Rear Left ## In E1-MOT Position step_pin: PE6 dir_pin: !PC13 enable_pin: !PE5 rotation_distance: 40 gear_ratio: 80:16 microsteps: 16

[tmc2209 stepper_z1] uart_pin: PC14 interpolate: True run_current: 0.8 hold_current: 0.8 sense_resistor: 0.110 stealthchop_threshold: 0

[stepper_z2] ## Z2 Stepper - Rear Right ## In E2-MOT Position step_pin: PE2 dir_pin: PE4 enable_pin: !PE3 rotation_distance: 40 gear_ratio: 80:16 microsteps: 16

[tmc2209 stepper_z2] uart_pin: PC15 interpolate: true run_current: 0.8 hold_current: 0.8 sense_resistor: 0.110 stealthchop_threshold: 0

[stepper_z3] ## Z3 Stepper - Front Right ## In E3-MOT Position step_pin: PD12 dir_pin: !PC4 enable_pin: !PE8 rotation_distance: 40 gear_ratio: 80:16 microsteps: 16

[tmc2209 stepper_z3] uart_pin: PA15 interpolate: true run_current: 0.8 hold_current: 0.8 sense_resistor: 0.110 stealthchop_threshold: 0

Hi,

My chamber temp sensor was already defined in [temperature_fan] section as the chamber fan was controlled by this thermsitor, I cannot use it to define in a [temperature_sensor] section otherwise an error would be raised. How can I deal with this issue? Any work around?

Also, how to configure the z_stepper for voron2.4 since there're 4 z steppers?

Thanks.

The dummy service should no longer be needed for use with Moonraker. Updated the install.sh file to continue following the pattern used by Z Auto Calibration. In addition, updated the README since copying the file into Klipper isn't needed since the install.sh file will just create a link.

Hello, I have a problem with the process_frame_expansion.py script. If I run the measure_thermal_behavior.py and the process_meshes.py all sound good but when I run the process_frame_expansion.py script I have this error:

pi@mainsailos:~/measure_thermal_behavior $ python3 process_frame_expansion.py thermal_quant_mark988#5325_2022-05-29_23-12-26.json Analyzing file: thermal_quant_mark988#5325_2022-05-29_23-12-26 sys:1: RankWarning: Polyfit may be poorly conditioned

And it doesn't create the temp_coeff_fitting.png

I am attaching the edited measure_thermal_behavior.py the out.txt and the thermal_quant fil

Thank you for your help

Marco

measure_thermal_behavior.zip e

I have a klicky probe.

My brain is telling me it would be nice to have the z-calibration routine/data added into the measure_thermal_behavior script.

But I cant actually figure out what it would be useful for. the z-calibration does drift with temperature and time, over squishing after long periods of heated chamber.

Is there anything to be gained here?

https://github.com/protoloft/klipper_z_calibration

I'm trying to apply this to an i3 bedslinger style frame, where the gantry is supported by twin stainless steel leadscrews, and inside an enclosure. The deviation from expected Z position is going to be dependent on the thermal growth of the length of leadscrew that is supporting the gantry. When the nozzle is at z=0 there's about 50 mm of active leadscrew, so if the chamber was heated from 20C to 40C the leadscrews would grow thermally 0.0000173 mm/mm/C x 50mm x (40C-20C) = 0.017mm. But when the nozzle gets up to z=100mm there would be 100+50 = 150mm of leadscrew active, so the total growth would be 0.0000173 x 150mm x 20c = 0.052mm. So the compensation needs to know the active length of the support element, which may change from layer to layer as it does in the case of the i3. I don't think what you currently have set up here takes that in to account.