Eddy Usage

info

• Ensure your printer is not leaking electricity before use
• If you have previously configured eddy, Probe, or BL-Touch, please delete them
• When installing Eddy, the coil should be above the nozzle, at a distance of 2mm-3mm from the nozzle
• Do not turn on the heated bed during testing

Notes

• Machines with multiple Z-axes need to be manually leveled once

Wiring Diagram

• Install with the logo facing the heated bed
  

Reference Configuration

• The XY offset value needs to be calculated based on the bed scanning module and the nozzle itself, then modified to the offset value below

[probe_eddy_current fly_eddy_probe]
sensor_type: ldc1612
i2c_address: 43
i2c_mcu: SB2040
i2c_bus: i2c1e
x_offset: 0     # Remember to set x offset
y_offset: 21.42 # Remember to set y offset 
z_offset: 2.5   # Remember to set z offset
i2c_speed: 4000000

[temperature_probe fly_eddy_probe]
sensor_type: Generic 3950
sensor_pin:SB2040:gpio28
horizontal_move_z: 2

Coil Model Download Links

• Click the download link below
• Loading...

Calculate XY Offset Value

• After downloading the model, please calculate the XY offset value according to the actual situation of the printer
• Modify the x_offset and y_offset values in the configuration after measurement

Please help me check this tutorial for any areas that can be optimized

Eddy Calibration

Notes

• Please make sure that there is no configuration for Probe, BL-Touch, or related configurations
• Multi-Z-axis machines need to be manually leveled once
• Check that the heated bed has no debris and the nozzle is clean before calibration

Add Configuration

Note

⚠️ Important Notice:

1. The following configuration is a temporary configuration, it must be deleted or commented out after use
2. After adding, click Save & Restart to save and restart
3. It must be added to the top of the printer.cfg file, do not add it to the bottom

[force_move]
enable_force_move: true

[gcode_macro _LDC_CALIBRATE_DRIVE_CURRENT]
gcode:
    BED_MESH_CLEAR
    SET_KINEMATIC_POSITION x=100 y=100 z=10
    G28 X Y
    M104 S0
    M140 S0
    M106 S0
    G0 X{printer.toolhead.axis_maximum.x / 2} Y{printer.toolhead.axis_maximum.y / 2} F6000
    G0 Z20 F600
    G4 P1000
    LDC_CALIBRATE_DRIVE_CURRENT CHIP=fly_eddy_probe 
    G4 P1000
    SAVE_CONFIG

[gcode_macro PROBE_EDDY_CURRENT_CALIBRATE_AUTO]
gcode:
    BED_MESH_CLEAR
    G28 X Y
    M104 S0
    M140 S0
    M106 S0
    G90 # Abs positioning
    G1 X{ printer.toolhead.axis_maximum.x/2 } Y{ printer.toolhead.axis_maximum.y/2 } F6000
    {% if 'z' not in printer.toolhead.homed_axes %}
        SET_KINEMATIC_POSITION Z={ printer.toolhead.axis_maximum.z-1 } # Allows the user to work it down until it touches.
    {% endif %}
    PROBE_EDDY_CURRENT_CALIBRATE {rawparams}

[gcode_macro TEMP_COMPENSATION]
description: Temperature compensation calibration process
gcode:
    {% set bed_temp = params.BED_TEMP|default(90)|int %}
    {% set nozzle_temp = params.NOZZLE_TEMP|default(250)|int %}
    {% set temperature_range_value = params.TEMPERATURE_RANGE_VALUE|default(3)|int %}
    {% set desired_temperature = params.DESIRED_TEMPERATURE|default(80)|int %}
    {% set Temperature_Timeout_Duration = params.TEMPERATURE_TIMEOUT_DURATION|default(6500000000)|int %}
        # Safety check: Ensure all axes are not locked
        {% if printer.pause_resume.is_paused %}
            { action_raise_error("Error: Printer is paused, please resume first") }
        {% endif %}
        # Step 1: Homing all axes
        STATUS_MESSAGE="Homing all axes..."
        G28
        STATUS_MESSAGE="Homing completed"
        # Step 2: Auto leveling
        Z_TILT_ADJUST
        # Step 3: Safe Z-axis lift
        STATUS_MESSAGE="Lifting Z-axis..."
        G90
        G0 Z5 F2000  # Lift slowly to prevent collision
        # Step 4: Set timeout and temperature calibration
        SET_IDLE_TIMEOUT TIMEOUT={Temperature_Timeout_Duration}
        STATUS_MESSAGE="Starting temperature probe calibration..."
        TEMPERATURE_PROBE_CALIBRATE PROBE=fly_eddy_probe TARGET={desired_temperature} STEP={temperature_range_value}
        # Step 5: Set printing temperature (modify as needed)
        STATUS_MESSAGE="Setting working temperature..."
        SET_HEATER_TEMPERATURE HEATER=heater_bed TARGET={bed_temp}
        SET_HEATER_TEMPERATURE HEATER=extruder TARGET={nozzle_temp}
        # Completion message
        STATUS_MESSAGE="Temperature compensation process complete!"
        description: G-Code macro

Drive Current Calibration

• Enter the following command in the web console

  _LDC_CALIBRATE_DRIVE_CURRENT

• At this time, the printer will move to the center position and move the print head away from the heated bed
• Then it will start automatic drive current calibration and automatically save after calibration
• Finally, it will restart Klipper

Calibration Height

tip

• Multi-Z-axis machines need to be manually leveled once, then proceed with calibration height
• After calibrating the height of multi-Z-axis machines, perform a leveling and then recalibrate the height (recommended)
• Check that the heated bed has no debris and the nozzle is clean before calibration

• Enter the following command in the web console

  PROBE_EDDY_CURRENT_CALIBRATE_AUTO CHIP=fly_eddy_probe

• At this time, the printer will move to the center position and a dialog box will pop up
• Follow the instructions on the Klipper UI, gradually lower the nozzle until it touches the paper placed on the print bed. Ensure the paper can move smoothly under appropriate pressure, while feeling slight friction.
• Note that during this process, avoid applying excessive pressure or damaging the print bed.
• After completion, click the ACCEPT button in the dialog box, and the system will start calibrating the EDDY's height
• After calibration is complete, click the SAVE_CONFIG & Restart button in the upper right corner of the web page. After clicking, the configuration will be saved and Klipper will restart

Temperature Compensation

tip

• When Eddy performs temperature compensation, the maximum temperature of the heated bed is very high, be careful to avoid burns
• Do not heat the heated bed and nozzle before performing temperature compensation
• Do not touch the surface of the heated bed during operation
• It is recommended to wear heat-resistant gloves when operating

1. After executing this operation, the UI will display the Z-axis adjustment box. Use the manual Z-axis offset calibration (Paper Test) mentioned above to clamp the paper between the nozzle and the bed, then confirm the value.

2. After accepting the value, the heated bed temperature will automatically be set to 80°C, and the nozzle temperature will be set to 250°C.
3. If you are in a room with air conditioning or open windows, it is recommended to close the air conditioning or windows to ensure that Eddy's temperature rises, as wind can affect the temperature rise.
4. As Eddy's temperature rises, the system will automatically prompt you to perform manual Z offset calibration every 3°C. The heated bed temperature is very high, be careful to avoid burns!!!

5. Repeat the manual Z offset calibration (Paper Test) until the calibration is complete. If you find that Eddy's temperature no longer rises, you can use the following commands to end the calibration early.

• Additional gcode commands available during drift calibration include: TEMPERATURE_PROBE_NEXT
• TEMPERATURE_PROBE_NEXT is used to force EDDy to sample new data before reaching the target temperature 80°C set by EDDy.
• TEMPERATURE_PROBE_COMPLETE is used to complete the calibration before EDDy reaches the set temperature 80°C.
• ABORT can be used to terminate the calibration and ignore the results.
• Use SAVE_CONFIG to save the temperature offset settings after the calibration is complete!
• In summary, compared to most other programs, the calibration process described above is more challenging and time-consuming. It may require practice and multiple attempts to achieve excellent first-layer printing results over a wide temperature range!

Usage Optimization

Fast Bed Leveling

• The following macro will raise the nozzle to 10mm during leveling, then quickly scan the bed, and after the bed scanning is completed, raise the nozzle to 2mm for fine leveling

Z_TILT_ADJUST

[gcode_macro Z_TILT_ADJUST]
rename_existing: _Z_TILT_ADJUST
gcode:
    # ========== State Save ==========
    SAVE_GCODE_STATE NAME=STATE_Z_TILT
    
    # ========== Environment Preparation ==========
    BED_MESH_CLEAR                       # Clear existing bed mesh data 
    
    # ========== Main Leveling Process ==========
    {% if not printer.z_tilt.applied %}
        # Initial coarse adjustment 
        _Z_TILT_ADJUST horizontal_move_z=10 retry_tolerance=1
    {% endif %}
    
    # Fine secondary leveling 
    _Z_TILT_ADJUST horizontal_move_z=2 retry_tolerance=0.005 retries=20 METHOD=rapid_scan ADAPTIVE=1
        G0 Z10 F6000                     # Use standard G-code commands instead of HORIZONTAL_MOVE_Z

    # ========== Post-Processing ==========
    G90                                 # Force absolute coordinate mode 
    G0 Z10 F6000                        # Raise Z axis to safe height 
    M117 Z_tilt Completed               # Display completion status 
    G28                                 # Return to origin
    # ========== State Restore ==========
    RESTORE_GCODE_STATE NAME=STATE_Z_TILT
    M400    

QUAD_GANTRY_LEVEL

[gcode_macro QUAD_GANTRY_LEVEL]
rename_existing: _QUAD_GANTRY_LEVEL 
gcode:
    # ========== State Save ==========
    SAVE_GCODE_STATE NAME=STATE_QGL 
    
    # ========== Environment Preparation ==========
    BED_MESH_CLEAR                       # Clear existing bed mesh data 
    
    # ========== Main Leveling Process ==========
    {% if not printer.quad_gantry_level.applied %}
        # Initial coarse adjustment 
        _QUAD_GANTRY_LEVEL horizontal_move_z=10 retry_tolerance=1
    {% endif %}
    
    # Fine secondary leveling 
    _QUAD_GANTRY_LEVEL horizontal_move_z=2 retry_tolerance=0.005 retries=20 METHOD=rapid_scan ADAPTIVE=1
        G0 Z10 F6000                     # Use standard G-code commands instead of HORIZONTAL_MOVE_Z

    # ========== Post-Processing ==========
    G90                                 # Force absolute coordinate mode 
    G0 Z10 F6000                        # Raise Z axis to safe height 
    M117 QGL Completed                  # Display completion status 
    G28                                 # Return to origin
    # ========== State Restore ==========
    RESTORE_GCODE_STATE NAME=STATE_QGL 
    M400                

Heated Bed

• The following macro will make the bed movement become a fast bed

[gcode_macro BED_MESH_CALIBRATE]
rename_existing: _BED_MESH_CALIBRATE
gcode: 
    _BED_MESH_CALIBRATE horizontal_move_z=2 METHOD=rapid_scan {rawparams}
    # G28 X Y

• If you use a high-power AC heated bed, it is recommended to configure
• This configuration will reduce the impact of the high-power heated bed on EDDY
• Automatically turn off the heated bed when using EDDY, and restore the temperature after use

[gcode_macro BED_MESH_CALIBRATE]
rename_existing: _BED_MESH_CALIBRATE
gcode:
    {% set TARGET_TEMP = printer.heater_bed.target %}
    M140 S0
    _BED_MESH_CALIBRATE {rawparams}
    M140 S{TARGET_TEMP}