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Common Debug Commands

tip
  • This tutorial is based on the Fuiidd web page
  • This tutorial is for debugging purposes after the printer has been properly connected.
  • This tutorial provides commonly used commands, but due to various issues, it may not be completely comprehensive.
Notice
  • Please note that malfunctioning or improperly configured drivers cannot be checked.
  • Ensure all drivers, power supply, motherboard, and driver jumpers and configurations are correct!!

Check Driver Status​

  • This command verifies the status of TMC drivers in SPI/UART mode. 
    DUMP_TMC STEPPER=stepper_x
    DUMP_TMC STEPPER=stepper_x1
    DUMP_TMC STEPPER=stepper_y
    DUMP_TMC STEPPER=stepper_y1
    DUMP_TMC STEPPER=stepper_z
    DUMP_TMC STEPPER=stepper_z1
    DUMP_TMC STEPPER=stepper_z2
    DUMP_TMC STEPPER=stepper_z3
    DUMP_TMC STEPPER=extruder

Force Move Drivers​

  • Add the following command in printer.cfg.

    [force_move]
    enable_force_move: true

  • Force back-and-forth movement by 1mm.

    STEPPER_BUZZ STEPPER=stepper_x
    STEPPER_BUZZ STEPPER=stepper_x1
    STEPPER_BUZZ STEPPER=stepper_y
    STEPPER_BUZZ STEPPER=stepper_y1
    STEPPER_BUZZ STEPPER=stepper_z
    STEPPER_BUZZ STEPPER=stepper_z1
    STEPPER_BUZZ STEPPER=stepper_z2
    STEPPER_BUZZ STEPPER=stepper_z3
    STEPPER_BUZZ STEPPER=extruder

  • Enable this option to force move through movement control.

  • Please note that only one motor can be moved at a time.

  • If multiple axes are involved, such as two Z axes, they need to be homed before controlling.

Force Set Print Head Distance​

  • Enter the following command in the console to force set the print head position and directly control the movement. 
    SET_KINEMATIC_POSITION x=100 y=100 z=100

Step Motor Step Value Calibration​

  • First ensure the extruder driver is functioning correctly, then confirm that full_steps_per_rotation and gear_ratio are correct; otherwise, extruder step value calibration will fail.

  • Obtain the new rotation_distance, rounding it to three decimal places.

  • Calibrate the step value: rotation_distance = old_rotation_distance * actual_extrusion_length / requested_extrusion_length

    full_steps_per_rotation: 200        # Number of pulses per rotation (200 for 1.8°, 400 for 0.9°)
    gear_ratio: 50:10                   # Gear ratio (Galileo gear ratio 7.5:1, comment out this line; BMG 50:17, output shaft first, input shaft second)
    rotation_distance: 22.522           # Pulley circumference mm

PID​

tip
  • The TARGET= in the command sets the temperature, please set it according to your usual printing temperature.
  • If you have multiple heating devices, you can use these commands for PID tuning.

  • Extruder

    PID_CALIBRATE HEATER=extruder TARGET=245

  • Bed

    PID_CALIBRATE HEATER=heater_bed TARGET=100

  • PTC

    PID_CALIBRATE HEATER=PTC TARGET=70
tip
  • If heating takes too long, refer to this method Click to Jump
  • Please note that if the temperature is unstable, use this method to resolve errors caused by unstable temperatures Click to Jump
tip
  • Currently being updated.

Normal Limit Switch​

  • Limit switch check command.
  • Ensure the limit switch is a two-wire type. If it is a three-wire type, verify that the wiring sequence is correct; otherwise, it could damage the motherboard!!!
  • Ensure the limit switch is normally open and not triggered by any object.
  • Enter the following command in the console. If it works correctly, it will return the following information: 
    QUERY_ENDSTOPS
  • Ensure the limit switch is in the open state, then manually press the limit switch and enter QUERY_ENDSTOPS.
  • A change in the limit switch status indicates correct wiring.

No Limit Switch​

  • Note that the no-limit switch state should always be open; otherwise, there might be an issue with the configuration or wiring.
  • Enter the following command in the console. If it works correctly, it will return the following information: 
    QUERY_ENDSTOPS

BL-TOUCH​

  • pin_down: Probe extends.
  • pin_up: Probe retracts.
  • touch_mode: Verify sensor.
BLTOUCH_DEBUG COMMAND=pin_down
BLTOUCH_DEBUG COMMAND=pin_up
BLTOUCH_DEBUG COMMAND=touch_mode
touch_mode

Probe & TAP​

  • Normally untriggered.
  • It is recommended to add ^ when configuring the pin.
QUERY_PROBE

Repeatability Accuracy​

  • Ten times. 
    probe_accuracy
  • One hundred times. 
    probe_accuracy samples=100

Special Types​

Servo​

tip
  • Servos are available in 180° and 360° versions. Please distinguish between them.

  • Reference configuration.

    [servo my_servo]
    pin:PE6

  • Reference command.

    SET_SERVO SERVO=my_servo ANGLE=360
    SET_SERVO SERVO=my_servo ANGLE=180
    SET_SERVO SERVO=my_servo ANGLE=0