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While testing I noticed that the movement after the pause will first move the head down and then move to the position before the pause. This could result in noticeable artifacts or accidentally push thin towers from the bed.) See the code below. ```gcode ;TYPE:CUSTOM ;added code by post processing ;script: PauseAtHeight.py ;current z: 5 ;current height: 5.0 M83 ; switch to relative E values for any needed retraction G1 F300 Z6 ; move up a millimeter to get out of the way G1 F9000 X190 Y190 G1 F300 Z20.0 M84 E0 @pause now change filament and press ; Do the actual pause G1 F300 Z5 G1 F9000 X30.759 Y30.759 G1 F1800 ; restore extrusion feedrate ``` I have switched the lines in the script such that it will first move to the correct X, Y and then move down ```python prepend_gcode += self.putValue(G = 1, X = x, Y = y, F = 9000) + "\n" prepend_gcode += self.putValue(G = 1, Z = current_z, F = 300) + "\n" ``` As shown in the code below ```gcode ;TYPE:CUSTOM ;added code by post processing ;script: PauseAtHeight.py ;current z: 5 ;current height: 5.0 M83 ; switch to relative E values for any needed retraction G1 F300 Z6 ; move up a millimeter to get out of the way G1 F9000 X190 Y190 G1 F300 Z20.0 M84 E0 @pause now change filament and press ; Do the actual pause G1 F9000 X30.759 Y30.759 G1 F300 Z5 G1 F1800 ; restore extrusion feedrate ```
535 lines
26 KiB
Python
535 lines
26 KiB
Python
# Copyright (c) 2021 Ultimaker B.V.
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# Cura is released under the terms of the LGPLv3 or higher.
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from ..Script import Script
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from UM.Application import Application #To get the current printer's settings.
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from UM.Logger import Logger
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from typing import List, Tuple
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class PauseAtHeight(Script):
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def __init__(self) -> None:
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super().__init__()
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def getSettingDataString(self) -> str:
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return """{
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"name": "Pause at height",
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"key": "PauseAtHeight",
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"metadata": {},
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"version": 2,
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"settings":
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{
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"pause_at":
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{
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"label": "Pause at",
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"description": "Whether to pause at a certain height or at a certain layer.",
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"type": "enum",
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"options": {"height": "Height", "layer_no": "Layer Number"},
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"default_value": "height"
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},
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"pause_height":
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{
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"label": "Pause Height",
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"description": "At what height should the pause occur?",
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"unit": "mm",
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"type": "float",
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"default_value": 5.0,
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"minimum_value": "0",
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"minimum_value_warning": "0.27",
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"enabled": "pause_at == 'height'"
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},
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"pause_layer":
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{
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"label": "Pause Layer",
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"description": "At what layer should the pause occur?",
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"type": "int",
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"value": "math.floor((pause_height - 0.27) / 0.1) + 1",
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"minimum_value": "0",
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"minimum_value_warning": "1",
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"enabled": "pause_at == 'layer_no'"
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},
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"pause_method":
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{
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"label": "Method",
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"description": "The method or gcode command to use for pausing.",
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"type": "enum",
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"options": {"marlin": "Marlin (M0)", "griffin": "Griffin (M0, firmware retract)", "bq": "BQ (M25)", "reprap": "RepRap (M226)", "repetier": "Repetier (@pause)"},
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"default_value": "marlin",
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"value": "\\\"griffin\\\" if machine_gcode_flavor==\\\"Griffin\\\" else \\\"reprap\\\" if machine_gcode_flavor==\\\"RepRap (RepRap)\\\" else \\\"repetier\\\" if machine_gcode_flavor==\\\"Repetier\\\" else \\\"bq\\\" if \\\"BQ\\\" in machine_name or \\\"Flying Bear Ghost 4S\\\" in machine_name else \\\"marlin\\\""
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},
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"disarm_timeout":
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{
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"label": "Disarm timeout",
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"description": "After this time steppers are going to disarm (meaning that they can easily lose their positions). Set this to 0 if you don't want to set any duration.",
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"type": "int",
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"value": "0",
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"minimum_value": "0",
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"minimum_value_warning": "0",
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"maximum_value_warning": "1800",
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"unit": "s"
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},
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"head_park_x":
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{
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"label": "Park Print Head X",
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"description": "What X location does the head move to when pausing.",
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"unit": "mm",
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"type": "float",
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"default_value": 190,
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"enabled": "pause_method != \\\"griffin\\\""
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},
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"head_park_y":
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{
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"label": "Park Print Head Y",
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"description": "What Y location does the head move to when pausing.",
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"unit": "mm",
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"type": "float",
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"default_value": 190,
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"enabled": "pause_method != \\\"griffin\\\""
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},
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"head_move_z":
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{
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"label": "Head move Z",
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"description": "The Height of Z-axis retraction before parking.",
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"unit": "mm",
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"type": "float",
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"default_value": 15.0,
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"enabled": "pause_method == \\\"repetier\\\""
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},
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"retraction_amount":
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{
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"label": "Retraction",
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"description": "How much filament must be retracted at pause.",
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"unit": "mm",
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"type": "float",
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"default_value": 0,
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"enabled": "pause_method != \\\"griffin\\\""
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},
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"retraction_speed":
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{
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"label": "Retraction Speed",
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"description": "How fast to retract the filament.",
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"unit": "mm/s",
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"type": "float",
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"default_value": 25,
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"enabled": "pause_method not in [\\\"griffin\\\", \\\"repetier\\\"]"
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},
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"extrude_amount":
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{
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"label": "Extrude Amount",
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"description": "How much filament should be extruded after pause. This is needed when doing a material change on Ultimaker2's to compensate for the retraction after the change. In that case 128+ is recommended.",
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"unit": "mm",
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"type": "float",
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"default_value": 0,
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"enabled": "pause_method != \\\"griffin\\\""
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},
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"extrude_speed":
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{
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"label": "Extrude Speed",
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"description": "How fast to extrude the material after pause.",
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"unit": "mm/s",
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"type": "float",
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"default_value": 3.3333,
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"enabled": "pause_method not in [\\\"griffin\\\", \\\"repetier\\\"]"
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},
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"redo_layer":
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{
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"label": "Redo Layer",
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"description": "Redo the last layer before the pause, to get the filament flowing again after having oozed a bit during the pause.",
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"type": "bool",
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"default_value": false
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},
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"standby_temperature":
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{
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"label": "Standby Temperature",
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"description": "Change the temperature during the pause.",
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"unit": "°C",
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"type": "int",
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"default_value": 0,
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"enabled": "pause_method not in [\\\"griffin\\\", \\\"repetier\\\"]"
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},
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"display_text":
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{
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"label": "Display Text",
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"description": "Text that should appear on the display while paused. If left empty, there will not be any message.",
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"type": "str",
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"default_value": "",
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"enabled": "pause_method != \\\"repetier\\\""
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},
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"machine_name":
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{
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"label": "Machine Type",
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"description": "The name of your 3D printer model. This setting is controlled by the script and will not be visible.",
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"default_value": "Unknown",
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"type": "str",
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"enabled": false
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},
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"machine_gcode_flavor":
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{
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"label": "G-code flavor",
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"description": "The type of g-code to be generated. This setting is controlled by the script and will not be visible.",
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"type": "enum",
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"options":
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{
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"RepRap (Marlin/Sprinter)": "Marlin",
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"RepRap (Volumetric)": "Marlin (Volumetric)",
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"RepRap (RepRap)": "RepRap",
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"UltiGCode": "Ultimaker 2",
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"Griffin": "Griffin",
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"Makerbot": "Makerbot",
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"BFB": "Bits from Bytes",
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"MACH3": "Mach3",
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"Repetier": "Repetier"
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},
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"default_value": "RepRap (Marlin/Sprinter)",
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"enabled": false
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},
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"custom_gcode_before_pause":
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{
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"label": "G-code Before Pause",
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"description": "Any custom g-code to run before the pause, for example, M300 S440 P200 to beep.",
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"type": "str",
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"default_value": ""
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},
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"custom_gcode_after_pause":
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{
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"label": "G-code After Pause",
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"description": "Any custom g-code to run after the pause, for example, M300 S440 P200 to beep.",
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"type": "str",
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"default_value": ""
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}
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}
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}"""
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## Copy machine name and gcode flavor from global stack so we can use their value in the script stack
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def initialize(self) -> None:
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super().initialize()
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global_container_stack = Application.getInstance().getGlobalContainerStack()
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if global_container_stack is None or self._instance is None:
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return
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for key in ["machine_name", "machine_gcode_flavor"]:
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self._instance.setProperty(key, "value", global_container_stack.getProperty(key, "value"))
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## Get the X and Y values for a layer (will be used to get X and Y of the
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# layer after the pause).
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def getNextXY(self, layer: str) -> Tuple[float, float]:
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"""Get the X and Y values for a layer (will be used to get X and Y of the layer after the pause)."""
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lines = layer.split("\n")
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for line in lines:
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if line.startswith(("G0", "G1", "G2", "G3")):
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if self.getValue(line, "X") is not None and self.getValue(line, "Y") is not None:
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x = self.getValue(line, "X")
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y = self.getValue(line, "Y")
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return x, y
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return 0, 0
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def execute(self, data: List[str]) -> List[str]:
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"""Inserts the pause commands.
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:param data: List of layers.
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:return: New list of layers.
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"""
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pause_at = self.getSettingValueByKey("pause_at")
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pause_height = self.getSettingValueByKey("pause_height")
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pause_layer = self.getSettingValueByKey("pause_layer")
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disarm_timeout = self.getSettingValueByKey("disarm_timeout")
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retraction_amount = self.getSettingValueByKey("retraction_amount")
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retraction_speed = self.getSettingValueByKey("retraction_speed")
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extrude_amount = self.getSettingValueByKey("extrude_amount")
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extrude_speed = self.getSettingValueByKey("extrude_speed")
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park_x = self.getSettingValueByKey("head_park_x")
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park_y = self.getSettingValueByKey("head_park_y")
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move_z = self.getSettingValueByKey("head_move_z")
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layers_started = False
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redo_layer = self.getSettingValueByKey("redo_layer")
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standby_temperature = self.getSettingValueByKey("standby_temperature")
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firmware_retract = Application.getInstance().getGlobalContainerStack().getProperty("machine_firmware_retract", "value")
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control_temperatures = Application.getInstance().getGlobalContainerStack().getProperty("machine_nozzle_temp_enabled", "value")
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initial_layer_height = Application.getInstance().getGlobalContainerStack().getProperty("layer_height_0", "value")
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display_text = self.getSettingValueByKey("display_text")
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gcode_before = self.getSettingValueByKey("custom_gcode_before_pause")
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gcode_after = self.getSettingValueByKey("custom_gcode_after_pause")
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pause_method = self.getSettingValueByKey("pause_method")
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pause_command = {
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"marlin": self.putValue(M = 0),
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"griffin": self.putValue(M = 0),
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"bq": self.putValue(M = 25),
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"reprap": self.putValue(M = 226),
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"repetier": self.putValue("@pause now change filament and press continue printing")
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}[pause_method]
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# T = ExtruderManager.getInstance().getActiveExtruderStack().getProperty("material_print_temperature", "value")
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# use offset to calculate the current height: <current_height> = <current_z> - <layer_0_z>
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layer_0_z = 0
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current_z = 0
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current_height = 0
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current_layer = 0
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current_extrusion_f = 0
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got_first_g_cmd_on_layer_0 = False
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current_t = 0 #Tracks the current extruder for tracking the target temperature.
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target_temperature = {} #Tracks the current target temperature for each extruder.
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nbr_negative_layers = 0
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for index, layer in enumerate(data):
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lines = layer.split("\n")
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# Scroll each line of instruction for each layer in the G-code
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for line in lines:
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# Fist positive layer reached
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if ";LAYER:0" in line:
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layers_started = True
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# Count nbr of negative layers (raft)
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elif ";LAYER:-" in line:
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nbr_negative_layers += 1
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#Track the latest printing temperature in order to resume at the correct temperature.
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if line.startswith("T"):
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current_t = self.getValue(line, "T")
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m = self.getValue(line, "M")
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if m is not None and (m == 104 or m == 109) and self.getValue(line, "S") is not None:
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extruder = current_t
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if self.getValue(line, "T") is not None:
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extruder = self.getValue(line, "T")
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target_temperature[extruder] = self.getValue(line, "S")
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if not layers_started:
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continue
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# Look for the feed rate of an extrusion instruction
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if self.getValue(line, "F") is not None and self.getValue(line, "E") is not None:
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current_extrusion_f = self.getValue(line, "F")
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# If a Z instruction is in the line, read the current Z
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if self.getValue(line, "Z") is not None:
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current_z = self.getValue(line, "Z")
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if pause_at == "height":
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# Ignore if the line is not G1 or G0
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if self.getValue(line, "G") != 1 and self.getValue(line, "G") != 0:
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continue
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# This block is executed once, the first time there is a G
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# command, to get the z offset (z for first positive layer)
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if not got_first_g_cmd_on_layer_0:
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layer_0_z = current_z - initial_layer_height
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got_first_g_cmd_on_layer_0 = True
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current_height = current_z - layer_0_z
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if current_height < pause_height:
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continue # Scan the enitre layer, z-changes are not always on the same/first line.
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# Pause at layer
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else:
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if not line.startswith(";LAYER:"):
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continue
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current_layer = line[len(";LAYER:"):]
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try:
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current_layer = int(current_layer)
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# Couldn't cast to int. Something is wrong with this
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# g-code data
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except ValueError:
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continue
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if current_layer < pause_layer - nbr_negative_layers:
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continue
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prev_layer = data[index - 1]
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prev_lines = prev_layer.split("\n")
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current_e = 0.
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# Access last layer, browse it backwards to find
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# last extruder absolute position
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for prevLine in reversed(prev_lines):
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current_e = self.getValue(prevLine, "E", -1)
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if current_e >= 0:
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break
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# and also find last X,Y
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for prevLine in reversed(prev_lines):
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if prevLine.startswith(("G0", "G1", "G2", "G3")):
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if self.getValue(prevLine, "X") is not None and self.getValue(prevLine, "Y") is not None:
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x = self.getValue(prevLine, "X")
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y = self.getValue(prevLine, "Y")
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break
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# Maybe redo the last layer.
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if redo_layer:
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prev_layer = data[index - 1]
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layer = prev_layer + layer
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# Get extruder's absolute position at the
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# beginning of the redone layer.
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# see https://github.com/nallath/PostProcessingPlugin/issues/55
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# Get X and Y from the next layer (better position for
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# the nozzle)
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x, y = self.getNextXY(layer)
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prev_lines = prev_layer.split("\n")
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for lin in prev_lines:
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new_e = self.getValue(lin, "E", current_e)
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if new_e != current_e:
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current_e = new_e
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break
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prepend_gcode = ";TYPE:CUSTOM\n"
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prepend_gcode += ";added code by post processing\n"
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prepend_gcode += ";script: PauseAtHeight.py\n"
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if pause_at == "height":
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prepend_gcode += ";current z: {z}\n".format(z = current_z)
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prepend_gcode += ";current height: {height}\n".format(height = current_height)
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else:
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prepend_gcode += ";current layer: {layer}\n".format(layer = current_layer)
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if pause_method == "repetier":
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#Retraction
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prepend_gcode += self.putValue(M = 83) + " ; switch to relative E values for any needed retraction\n"
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if retraction_amount != 0:
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prepend_gcode += self.putValue(G = 1, E = -retraction_amount, F = 6000) + "\n"
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#Move the head away
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prepend_gcode += self.putValue(G = 1, Z = current_z + 1, F = 300) + " ; move up a millimeter to get out of the way\n"
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prepend_gcode += self.putValue(G = 1, X = park_x, Y = park_y, F = 9000) + "\n"
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if current_z < move_z:
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prepend_gcode += self.putValue(G = 1, Z = current_z + move_z, F = 300) + "\n"
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#Disable the E steppers
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prepend_gcode += self.putValue(M = 84, E = 0) + "\n"
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elif pause_method != "griffin":
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# Retraction
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prepend_gcode += self.putValue(M = 83) + " ; switch to relative E values for any needed retraction\n"
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if retraction_amount != 0:
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if firmware_retract: #Can't set the distance directly to what the user wants. We have to choose ourselves.
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retraction_count = 1 if control_temperatures else 3 #Retract more if we don't control the temperature.
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for i in range(retraction_count):
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prepend_gcode += self.putValue(G = 10) + "\n"
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else:
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prepend_gcode += self.putValue(G = 1, E = -retraction_amount, F = retraction_speed * 60) + "\n"
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# Move the head away
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prepend_gcode += self.putValue(G = 1, Z = current_z + 1, F = 300) + " ; move up a millimeter to get out of the way\n"
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# This line should be ok
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prepend_gcode += self.putValue(G = 1, X = park_x, Y = park_y, F = 9000) + "\n"
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if current_z < 15:
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prepend_gcode += self.putValue(G = 1, Z = 15, F = 300) + " ; too close to bed--move to at least 15mm\n"
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if control_temperatures:
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# Set extruder standby temperature
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prepend_gcode += self.putValue(M = 104, S = standby_temperature) + " ; standby temperature\n"
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if display_text:
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prepend_gcode += "M117 " + display_text + "\n"
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# Set the disarm timeout
|
|
if disarm_timeout > 0:
|
|
prepend_gcode += self.putValue(M = 18, S = disarm_timeout) + " ; Set the disarm timeout\n"
|
|
|
|
# Set a custom GCODE section before pause
|
|
if gcode_before:
|
|
prepend_gcode += gcode_before + "\n"
|
|
|
|
# Wait till the user continues printing
|
|
prepend_gcode += pause_command + " ; Do the actual pause\n"
|
|
|
|
# Set a custom GCODE section before pause
|
|
if gcode_after:
|
|
prepend_gcode += gcode_after + "\n"
|
|
|
|
if pause_method == "repetier":
|
|
#Push the filament back,
|
|
if retraction_amount != 0:
|
|
prepend_gcode += self.putValue(G = 1, E = retraction_amount, F = 6000) + "\n"
|
|
|
|
# Optionally extrude material
|
|
if extrude_amount != 0:
|
|
prepend_gcode += self.putValue(G = 1, E = extrude_amount, F = 200) + "\n"
|
|
prepend_gcode += self.putValue("@info wait for cleaning nozzle from previous filament") + "\n"
|
|
prepend_gcode += self.putValue("@pause remove the waste filament from parking area and press continue printing") + "\n"
|
|
|
|
# and retract again, the properly primes the nozzle when changing filament.
|
|
if retraction_amount != 0:
|
|
prepend_gcode += self.putValue(G = 1, E = -retraction_amount, F = 6000) + "\n"
|
|
|
|
#Move the head back
|
|
prepend_gcode += self.putValue(G = 1, X = x, Y = y, F = 9000) + "\n"
|
|
prepend_gcode += self.putValue(G = 1, Z = current_z, F = 300) + "\n"
|
|
if retraction_amount != 0:
|
|
prepend_gcode += self.putValue(G = 1, E = retraction_amount, F = 6000) + "\n"
|
|
|
|
if current_extrusion_f != 0:
|
|
prepend_gcode += self.putValue(G = 1, F = current_extrusion_f) + " ; restore extrusion feedrate\n"
|
|
else:
|
|
Logger.log("w", "No previous feedrate found in gcode, feedrate for next layer(s) might be incorrect")
|
|
|
|
prepend_gcode += self.putValue(M = 82) + "\n"
|
|
|
|
# reset extrude value to pre pause value
|
|
prepend_gcode += self.putValue(G = 92, E = current_e) + "\n"
|
|
|
|
elif pause_method != "griffin":
|
|
if control_temperatures:
|
|
# Set extruder resume temperature
|
|
prepend_gcode += self.putValue(M = 109, S = int(target_temperature.get(current_t, 0))) + " ; resume temperature\n"
|
|
|
|
# Push the filament back,
|
|
if retraction_amount != 0:
|
|
prepend_gcode += self.putValue(G = 1, E = retraction_amount, F = retraction_speed * 60) + "\n"
|
|
|
|
# Optionally extrude material
|
|
if extrude_amount != 0:
|
|
prepend_gcode += self.putValue(G = 1, E = extrude_amount, F = extrude_speed * 60) + "\n"
|
|
|
|
# and retract again, the properly primes the nozzle
|
|
# when changing filament.
|
|
if retraction_amount != 0:
|
|
prepend_gcode += self.putValue(G = 1, E = -retraction_amount, F = retraction_speed * 60) + "\n"
|
|
|
|
# Move the head back
|
|
if current_z < 15:
|
|
prepend_gcode += self.putValue(G = 1, Z = current_z, F = 300) + "\n"
|
|
prepend_gcode += self.putValue(G = 1, X = x, Y = y, F = 9000) + "\n"
|
|
prepend_gcode += self.putValue(G = 1, Z = current_z, F = 300) + " ; move back down to resume height\n"
|
|
if retraction_amount != 0:
|
|
if firmware_retract: #Can't set the distance directly to what the user wants. We have to choose ourselves.
|
|
retraction_count = 1 if control_temperatures else 3 #Retract more if we don't control the temperature.
|
|
for i in range(retraction_count):
|
|
prepend_gcode += self.putValue(G = 11) + "\n"
|
|
else:
|
|
prepend_gcode += self.putValue(G = 1, E = retraction_amount, F = retraction_speed * 60) + "\n"
|
|
|
|
if current_extrusion_f != 0:
|
|
prepend_gcode += self.putValue(G = 1, F = current_extrusion_f) + " ; restore extrusion feedrate\n"
|
|
else:
|
|
Logger.log("w", "No previous feedrate found in gcode, feedrate for next layer(s) might be incorrect")
|
|
|
|
extrusion_mode_string = "absolute"
|
|
extrusion_mode_numeric = 82
|
|
|
|
relative_extrusion = Application.getInstance().getGlobalContainerStack().getProperty("relative_extrusion", "value")
|
|
if relative_extrusion:
|
|
extrusion_mode_string = "relative"
|
|
extrusion_mode_numeric = 83
|
|
|
|
prepend_gcode += self.putValue(M = extrusion_mode_numeric) + " ; switch back to " + extrusion_mode_string + " E values\n"
|
|
|
|
# reset extrude value to pre pause value
|
|
prepend_gcode += self.putValue(G = 92, E = current_e) + "\n"
|
|
|
|
elif redo_layer:
|
|
# All other options reset the E value to what it was before the pause because E things were added.
|
|
# If it's not yet reset, it still needs to be reset if there were any redo layers.
|
|
prepend_gcode += self.putValue(G = 92, E = current_e) + "\n"
|
|
|
|
layer = prepend_gcode + layer
|
|
|
|
# Override the data of this layer with the
|
|
# modified data
|
|
data[index] = layer
|
|
return data
|
|
return data
|