macro_general.cfg

# G29 that does (1) home all (2) get bed mesh (3) move nozzle to corner so it doesnt ooze on the bed while heating up.
[gcode_macro G29]
gcode:
    G28
    BED_MESH_CALIBRATE
    G0 X0 Y0 Z10 F6000
    BED_MESH_PROFILE save=default

# Park toolhead
[gcode_macro M125]
gcode:
    SAVE_GCODE_STATE NAME=parking
    M117 Parking toolhead
    G91
    G1 Z20 F600 # move up 5 mm
    G90
    G1 X125 Y0 F4000 # move to park position
    RESTORE_GCODE_STATE NAME=parking

# LOW_TEMP_CHECK checks if there is a setpoint for the  extruder. Untested! 
# - If this setpoint is reached, continue. 
# - If not, heat to setpoint.
# - If no setpoint, heat to parameter T (default@200)
[gcode_macro LOW_TEMP_CHECK]
gcode: 
    {% set EXTRUDER_TEMP = params.T | default (200) | int%}
    {% if printer.extruder.target != 0 %} # if there is a setpoint for extruder
        {% if printer.extruder.temperature < printer.extruder.target %} # if not reached, heat
            M118 Heating from {printer.extruder.temperature} to {printer.extruder.target}.
            M109 S{printer.extruder.target|float} 
        {% endif %}
    {% else %} # if no setpoint for extruder
        {% if printer.extruder.target < EXTRUDER_TEMP %}  # heat to T.
            M118 No setpoint, heating to {EXTRUDER_TEMP}.
            M109 S{EXTRUDER_TEMP}
        {% endif %}
    {% endif %}
    
# load filament
[gcode_macro M701]
gcode:
    SAVE_GCODE_STATE NAME=loading_filament
    M117 Loading Filament
    M83
    G92 E0.0
    LOW_TEMP_CHECK
    G1 E420 F6000  # length of bowden tube till cold-end (~420mm) 
    G1 E100 F200  # some extra to prime the nozzle --> slower 
    G92 E0.0
    RESTORE_GCODE_STATE NAME=loading_filament
    
# unload filament
[gcode_macro M702]
gcode:
    SAVE_GCODE_STATE NAME=unloading_filament
    M125 # park
    M117 Unloading Filament 
    LOW_TEMP_CHECK
    G91 # set relative
    G1 E10 F100 
    G92 E0.0
    G1 E-530 F6000 # the E is the length of the bowden tube (420mm) + 100 mm. 
    G92 E0.0
    RESTORE_GCODE_STATE NAME=unloading_filament

# filament change 
[gcode_macro M600]
gcode:
    M117 Filament Change
    M118 Filament Change
    SAVE_GCODE_STATE NAME=filament_change
    PAUSE
    LOW_TEMP_CHECK
    G91 # relative
    G1 E-1 F300 # retract 1
    M125 # park
    M702 # unload

    M117 New filament
    M118 New filament
    COUNTDOWN TIME=25 MSG="Switch"
    M701
    COUNTDOWN TIME=10 MSG="Clean"
    RESUME
    M117 Resuming
    M118 Resuming
    RESTORE_GCODE_STATE NAME=filament_change
    M117 Printing..
    M118 Printing..

[gcode_macro COUNTDOWN]
# default_parameter_MSG: "Time: "
# default_parameter_TIME: 10
gcode: 
    # countdown 
    {% for s in range(TIME|int, 0, -1) %}
        # dwell 1 second
        G4 P1000
        # echo
        M117 {params.MSG} {s}s
        M118 {params.MSG} {s}s
    {% endfor %}