wipepurge.cfg

# Extra line here for no reason?
[gcode_macro DECONTAMINATE]
# Takes the following arguments:
# WIPE=x    Number of times to wipe (defaults to zero)
# PURGE=x   mm of filament to purge (defaults to zero)
# MOVE=x    If non-zero, will always perform a move
variable_brush_start: 82
variable_brush_width: 40
variable_brush_depth: 2  # Amount *reachable* from max Y (must be integer)
variable_bucket_start: 6.0
variable_bucket_left_width: 92
variable_bucket_right_width: 40
variable_bucket_gap: 22.0
variable_brush_top: 1.5
variable_clearance_z: 5.0
variable_prep_spd_xy: 3000	         # Travel (not cleaning) speed along x and y-axis in mm/min.
variable_prep_spd_z: 1500                # Travel (not cleaning) speed along z axis in mm/min.
variable_purge_spd: 150                  # Speed, in mm/min, of the purge.
variable_purge_ret: 0.75                 # Retract length, in mm, after purging to prevent
                                         # slight oozing. Adjust as necessary.
variable_purge_temp_min: 220             # Minimum temperature for a purge.
variable_ooze_dwell: 10.0                # Dwell/wait time, in seconds, after purging and retracting.
variable_wipe_spd_xy: 5000	         # Nozzle wipe speed in mm/min.

gcode:
  {% set PURGE_LEN = params.PURGE|default(0)|float %}
  {% set WIPE_COUNT = params.WIPE|default(0)|int %}
  {% set DO_MOVE = params.MOVE|default(0)|int %}
  {% set y_rear = printer.configfile.config["stepper_y"]["position_max"]|float %}
  # Select a bucket randomly based on size (ie: more in the left bucket)
  {% set bucket = range(bucket_left_width + bucket_right_width)|random %}

  SAVE_GCODE_STATE NAME=DECONTAMINATE_STATE
  M83      # relative extrusion mode
  G90      # absolute position mode
  
  # Move to clearance Z
  G0 Z{brush_top + clearance_z} F{prep_spd_z}
  # First, purge.
  {% if PURGE_LEN > 0 %}
    G0 Y{y_rear - brush_depth} F{prep_spd_xy}
    {% if bucket < bucket_left_width %}
      G0 X{bucket_start + (bucket_left_width / 2)} F{prep_spd_xy}
    {% else %}
      G0 X{bucket_start + bucket_left_width + bucket_gap + (bucket_right_width / 2)} F{prep_spd_xy}
    {% endif %}
    {% if printer.extruder.temperature >= purge_temp_min %}
      G1 E{PURGE_LEN} F{purge_spd}
      G1 E-{purge_ret} F{purge_spd * 5}
      G4 P{ooze_dwell * 1000}
    {% endif %}
  {% endif %}

  # Now wipe
  # We want to start in a random direction and move to a random position
  # on the other side of the brush.
  {% if WIPE_COUNT > 0 %}
    {% set off = range(0, 2)|random %}
    G0 X{(brush_start + brush_width * (1 - off))} Y{y_rear - brush_depth} F{prep_spd_xy}
    G0 Z{brush_top} F{prep_spd_z}
    {% for wipes in range(0, WIPE_COUNT) %}
      G0 X{brush_start + ((wipes + off) % 2) * brush_width} Y{y_rear - range(0, brush_depth)|random} F{wipe_spd_xy}
    {% endfor %}
    G0 Y{y_rear - brush_depth} F{prep_spd_xy}
  {% endif %}

  {% if DO_MOVE != 0 %}
    ECHO DO_MOVE="{DO_MOVE}"
    G0 Z{brush_top + clearance_z} F{prep_spd_z}
    {% if bucket < bucket_left_width %}
      G0 X{bucket_start + (bucket_left_width / 2)} Y{y_rear - brush_depth} F{prep_spd_xy}
    {% else %}
      G0 X{bucket_start + bucket_left_width + bucket_gap + (bucket_right_width / 2)} Y{y_rear - brush_depth} F{prep_spd_xy}
    {% endif %}
    RESTORE_GCODE_STATE NAME=DECONTAMINATE_STATE MOVE=0
  {% else %}
    RESTORE_GCODE_STATE NAME=DECONTAMINATE_STATE MOVE=1
  {% endif %}