heatbed.cfg

[heater_bed]
heater_pin: PB9
sensor_type: Generic 3950
sensor_pin: PC3
pullup_resistor: 4700
#control: watermark
#max_power: 1.0
min_temp: -100
max_temp: 130

[verify_heater heater_bed]
max_error: 120
check_gain_time:200
hysteresis: 10
heating_gain: 10

#AutoCalibration                   
[bed_mesh]                         
speed: 300                          
horizontal_move_z:2
move_check_distance: 5
mesh_min: -105, -105            
mesh_max: 105, 105             
probe_count: 5, 5                  
mesh_pps: 3, 3                     
algorithm: bicubic                 
bicubic_tension: 0.2               
#fade_start: 3
#fade_end: 10
#fade_target: 0

[skew_correction]

[probe]
pin: !PB4
speed: 2
lift_speed: 5
samples: 1

[temperature_sensor Load_Cell]
sensor_type: MAX31856
sensor_pin: PD5
#spi_bus: spi4
spi_speed: 1000000
spi_software_sclk_pin: PD6
spi_software_mosi_pin: PD7
spi_software_miso_pin: PD8
min_temp: 0
max_temp: 2048
gcode_id: W

# reset the check_level_pin state
[output_pin _level_clear]
pin: PD10
value:0

# check level pin is triggered when load cell tare is set via level_h1 pin
[gcode_button _check_level_pin]
pin: !PE0
press_gcode:
    G4 P0

# set load cell tare
[output_pin _level_h1]
pin:PG2
value:0

# don't use (!) - changes load cell calibration
[output_pin _level_h2]
pin:PG3
value:0

# don't use (!) - changes load cell calibration
[output_pin _level_h3]
pin:PG4
value:0


[gcode_macro AUTO_BED_LEVEL]
description: Move to temps and initiate Bed Mesh Calibrate
gcode:
    {% set bed_temp = params.BED_TEMP|default(60)|float %}
    {% set extruder_temp = params.EXTRUDER_TEMP|default(200)|float %}
    {% set profile = params.PROFILE|default("auto") %}
    {% set NOZZLE = 150 %}  ; nozzle temp to use during bed level

    # clear old mesh and home if necessary
    BED_MESH_CLEAR
    {% if not "xyz" in printer.toolhead.homed_axes %}
        G28
    {% endif %}

    # bed heating
    G90                     ; absolute coordinates
    G1 Z10 F1800            ; raise bed
    M140 S{bed_temp - 2}	; set bed temp to lower temp just incase bed temp is already HOTTER.
    # wait for bed to reach temp, if HOTTER; don't wait for stabilization
    TEMPERATURE_WAIT SENSOR=heater_bed MAXIMUM={bed_temp}
    M140 S{bed_temp}        ; set bed temp
    # wait for bed to reach temp, don't wait for stabilization
    TEMPERATURE_WAIT SENSOR=heater_bed MINIMUM={bed_temp}
    LOAD_CELL_TARE          ; reset tare before manual probe

    # nozzle heating
    M104 S{extruder_temp}   ; set nozzle temperature
    # wait for nozzle to reach temp, don't wait for stabilization
    TEMPERATURE_WAIT SENSOR=extruder MINIMUM={extruder_temp}

    # wipe to left
    G90                     ; absolute coordinates
    G1 X50 Y110 Z5 F18000   ; get into position
    PROBE                   ; moove nozzle to bed
    G91                     ; relative position
    G1 X-40 F900            ; wipe move left

    # wipe to right
    G90                     ; absolute coordinates
    G1 X-50 Y110 Z5 F18000  ; get into position
    PROBE                   ; moove nozzle to bed
    G91                     ; relative position
    G1 X40 F900             ; wipe move right

    # wait for nozzle cooldown to calibration temp
    M106 S255               ; turn on fan
    M104 S0                 ; turn of noozle heating
    TEMPERATURE_WAIT SENSOR=extruder MAXIMUM={NOZZLE + 2}
    M104 S{NOZZLE}               ; turn nozzle heating on to 150
    M107                    ; turn off fan

    # move to remove cold filament
    G1 X10 F300

    # start the calibration
    BED_MESH_CALIBRATE PROFILE="{profile}"


[gcode_macro BED_MESH_CALIBRATE]
description: Begin bed mesh point checks
rename_existing: _BED_MESH_CALIBRATE_ORIG
gcode:
    G90                     ; absolute coordinates
    G1 Z2 F1800             ; move noozle near bed
    LOAD_CELL_TARE          ; reset tare before leveling
    _BED_MESH_CALIBRATE_ORIG {rawparams}


[gcode_macro Z_OFFSET_APPLY_ENDSTOP]
# This macro is replaced because saving the z-offset to the endstop would not have the expected outcome
# on this printer. The endstop is separate from the probe. After bed leveling before print, the offset
# would be ineffective.
rename_existing: _Z_OFFSET_APPLY_ENDSTOP
gcode:
    RESPOND MSG="Notice: z-offset should not be saved to endstop on this printer. This command runs Z_OFFSET_APPLY_PROBE instead."
    Z_OFFSET_APPLY_PROBE


[gcode_macro LOAD_CELL_TARE]
description: Zero out Load cell
variable_success: 0
gcode:
    # reset success
    SET_GCODE_VARIABLE MACRO=LOAD_CELL_TARE VARIABLE=success VALUE=0
    # try set tare, up to 10 times
    {% for i in range(10) %}
        _LOAD_CELL_TARE_IF_NO_SUCCESS
    {% endfor %}
    # final check if successfull
    _LOAD_CELL_TARE_FINAL_CHECK


[gcode_macro _LOAD_CELL_TARE_IF_NO_SUCCESS]
gcode:
    {% if not printer["gcode_macro LOAD_CELL_TARE"].success %}
        _LOAD_CELL_TARE_SET
        _LOAD_CELL_TARE_CHECK
    {% endif %}


[gcode_macro _LOAD_CELL_TARE_SET]
gcode:
    # Tare is set by toggeling _level_h1 pin
    SET_PIN PIN=_level_h1 VALUE=0
    G4 P500
    M400
    SET_PIN PIN=_level_h1 VALUE=1
    G4 P500
    M400
    SET_PIN PIN=_level_h1 VALUE=0
    G4 P500
    M400
    SET_PIN PIN=_level_h1 VALUE=1
    G4 P500
    M400


[gcode_macro _LOAD_CELL_TARE_CHECK]
gcode:
    # If level check pin is set, tare is successfull.
    {% if "PRESSED" in printer['gcode_button _check_level_pin'].state %}
        SET_GCODE_VARIABLE MACRO=LOAD_CELL_TARE VARIABLE=success VALUE=1
    {% endif %}


[gcode_macro _LOAD_CELL_TARE_FINAL_CHECK]
gcode:
    # Check success
    {% if printer["gcode_macro LOAD_CELL_TARE"].success %}
        # Toggle level clear plin.
        # No sure what the level clear pin does. But we do the same as the stock software.
        SET_PIN PIN=_level_clear VALUE=0
        G4 P10
        M400
        SET_PIN PIN=_level_clear VALUE=1
        RESPOND TYPE=echo MSG="Load cell tare success."
    # Else raise error
    {% else %}
        {action_raise_error("Load cell tare failed.")}
    {% endif %}