SMART-M600:

Added NOZZLE_CHANGE and MAINTENANCE macros
rootiest · Apr 16, 2023 · 1254240 · 1254240
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diff --git a/extras/filament_change/README.md b/extras/filament_change/README.md
@@ -42,6 +42,8 @@ During manual filament changes this behavior is modified slightly to account for
   - [Slicer Material/Color Change](#slicer-materialcolor-change)
   - [Manual Filament Change](#manual-filament-change)
   - [Manual Purging](#manual-purging)
+  - [Nozzle Change](#nozzle-change)
+  - [Maintenance Parking](#maintenance-parking)
   - [Toggling Filament Sensing](#toggling-filament-sensing)
     - [Automating Filament Sensor Toggling](#automating-filament-sensor-toggling)
 - [Additional Notes](#additional-notes)
@@ -52,6 +54,7 @@ During manual filament changes this behavior is modified slightly to account for
   - [v2.3.0 2023-02-17](#v230-2023-02-17)
   - [v2.2.5 2023-1-27](#v225-2023-1-27)
   - [v2.2.0 2023-1-27](#v220-2023-1-27)
+  - [v2.5.0 2023-4-16](#v250-2023-4-16)
   - [v2.0.1 2023-1-3](#v201-2023-1-3)
   - [v2.0 2023-1-1](#v20-2023-1-1)
   - [v1.9 2022-12-30](#v19-2022-12-30)
@@ -379,6 +382,29 @@ There is also a `PURGE` command included. This command will allow you to extrude
 
 To use this, simply run `PURGE`
 
+## Nozzle Change
+
+You can use the `NOZZLE_CHANGE` command to perform nozzle changes. 
+
+It will park the toolhead in a convenient location (by default the center of the XYZ axes) and then unload the filament.
+
+Once you have completed the nozzle change you can run `NOZZLE_CHANGE_DONE` to load the filament and cool down the hotend.
+
+To change the parking coordinates, see [the MAINTENANCE macro](#maintenance-parking)
+## Maintenance Parking
+
+This macro parks the toolhead in a convenient position for performing maintenance.
+
+To change the maintenance parking position, change all three variable values **on the `MAINTENANCE` macro:
+
+    variable_maint_x: -1
+    variable_maint_y: -1
+    variable_maint_z: -1
+
+When any of these values are set to `-1` the default (centered) parking coordinates will be used.
+
+Changing them all to your preferred coordinates will change the parking location used by `MAINTENANCE` (and others that use it like `NOZZLE_CHANGE`)
+
 ## Toggling Filament Sensing
 
 You can use the following commands to toggle the filament sensor on and off:
@@ -479,6 +505,11 @@ This helps to prevent accidental triggering outside of prints when performing ma
         variable_auto_unload: False
         variable_runout: False
 
+## v2.5.0 2023-4-16
+
+- Added `NOZZLE_CHANGE` and `MAINTENANCE` macros.
+- Fixed a typo in the `COLOR_CHANGE` macro.
+
 ## v2.0.1 2023-1-3
 
 - Minor bug fix to repair `coldstart` feature. This should hopefully prevent runouts from ever being triggered during manual filament changes.

diff --git a/extras/filament_change/smart-m600.cfg b/extras/filament_change/smart-m600.cfg
@@ -1,6 +1,6 @@
 #####################################
 #   Smart Filament Change Macros    #
-#      Version 2.4.0 2023-4-2       #
+#      Version 2.5.0 2023-4-16      #
 #####################################
 #####     PLEASE READ BELOW     #####
 #####################################
@@ -88,7 +88,7 @@ gcode:
     M600
     SET_GCODE_VARIABLE MACRO=_m600cfg VARIABLE=prev_temp VALUE={printer.extruder.target}
     SET_GCODE_VARIABLE MACRO=_m600cfg VARIABLE=runout VALUE=True
-    M{printcfg.output|int} Unloading Filament...
+    M{m600cfg.output|int} Unloading Filament...
     UNLOAD_FILAMENT 
 
 ################################
@@ -319,6 +319,31 @@ gcode:
         STATUS_READY
     {% endif %}
 
+################################
+######## NOZZLE_CHANGE #########
+################################
+## This macro is used to change the nozzle on the printer
+## It prepares the printhead by heating the nozzle to the
+## apppropriate temperature and unloading the filament.
+## Then the printhead is parked in a convenient position for nozzle changes.
+[gcode_macro NOZZLE_CHANGE]
+description: Prepare the printer for a nozzle change
+gcode:
+    {% set m600cfg = printer["gcode_macro _m600cfg"] %} ; get m600cfg variables
+    HOME_IF_NEEDED ; Home all axes if not already homed
+    M{m600cfg.output|int} Nozzle Change
+    MAINTENANCE ; Park the toolhead in a convenient position
+    UNLOAD_FILAMENT ; Unload filament
+    M{m600cfg.output|int} Change nozzle now and run NOZZLE_CHANGE_DONE when finished
+
+[gcode_macro NOZZLE_CHANGE_DONE]
+description: Complete the nozzle change
+gcode:
+    {% set m600cfg = printer['gcode_macro _m600cfg'] %} ; get m600cfg variables
+    LOAD_FILAMENT ; Load filament
+    M104 S0 ; Turn off extruder heater
+    M{m600cfg.output|int} Nozzle Change Complete
+
 ################################
 ########### PARKING ############
 ################################
@@ -342,6 +367,34 @@ gcode:
 	G90
 	G1 X{m600cfg.x|int} Y{m600cfg.y|int} F{m600cfg.park_speed|int}
 
+## MAINTENANCE parking
+[gcode_macro MAINTENANCE]
+description: Move the toolhead to a convenient position for working on it
+variable_maint_x: -1
+variable_maint_y: -1
+variable_maint_z: -1
+gcode:
+    {% set m600cfg = printer['gcode_macro _m600cfg'] %} ; get m600cfg variables
+    {% set config = printer.configfile.settings %} ; get realtime configfile settings
+    {% set max_x = config["stepper_x"]["position_max"]|float %} ; get max x position
+    {% set max_y = config["stepper_y"]["position_max"]|float %} ; get max y position
+    {% set max_z = config["stepper_z"]["position_max"]|float %} ; get max z position
+    {% set mid_x = max_x / 2.0 %} ; get middle of x axis
+    {% set mid_y = max_y / 2.0 %} ; get middle of y axis
+    {% set mid_z = max_z / 2.0 %} ; get middle of z axis
+    {% if maint_x < 0 or maint_y < 0 or maint_z < 0 %} ; if maintenance position is not defined move to middle of bed
+        {% set move_x = mid_x %} ; use middle of x axis
+        {% set move_y = mid_y %} ; use middle of y axis
+        {% set move_z = mid_z %} ; use middle of z axis
+    {% else %} ; otherwise,  move to defined positions
+        {% set move_x = maint_x %} ; get maintenance x position
+        {% set move_y = maint_y %} ; get maintenance y position
+        {% set move_z = maint_z %} ; get maintenance z position
+    {% endif %}
+    HOME_IF_NEEDED ; Home all axes (if not already homed)
+    G0 X{move_x} Y{move_y} Z{move_z} F3000 ; Move to maintenance position
+    M{m600cfg.output|int} Maintenance position reached
+
 ################################
 ########### HOMING #############
 ################################