Unable to disable temperature checks on extruder without thermistor

General Discussion
1

Hello!

I am trying to assemble a custom 3d printer that don’t have a heater and thermistor in extruder and i need to disable it. I am defining my extruder as (note any temperature don’t work and this fake one shows -22C in fluidd):

[extruder]
step_pin: gpio14
dir_pin: !gpio13
enable_pin: !gpio15
microsteps: 16
rotation_distance: 33.500
nozzle_diameter: 0.4
filament_diameter: 1.75
heater_pin: gpio23
sensor_type: EPCOS 100K B57560G104F
sensor_pin: gpio27
control: pid
pid_Kp: 22.2
pid_Ki: 1.08
pid_Kd: 114
min_temp=-30
max_temp=9999999999
min_extrude_temp=-30
max_extrude_cross_section:2

It is also -22C in the klippy.log.

What i am doing wrong?

2

See *Klipper Newbie* Error:Invalid homing_positive_dir / position_endstop in 'stepper_x' - #8 by Sineos

3

Yeah, this is exactly what i am doing, but it shows error still n UI

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image1104×478 22.3 KB

i

4

I wired a thermistor to the board and changed min temp to zero and it started working, but it is still not working without one

5

Did you set both

min_temp=-273.15 
min_extrude_temp=-273.15

?

6

Yes, i set both but they still don’t work. until i connect an actual probe. Could it be another parameters or UI problem?

7

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