New extruder type configuration options

Marlin/Conditionals.h

@@ -540,18 +540,52 @@
   #define HAS_PID_FOR_BOTH (ENABLED(PIDTEMP) && ENABLED(PIDTEMPBED))
 
   /**
-   * SINGLENOZZLE needs to differentiate EXTRUDERS and HOTENDS
-   * And all "extruders" are in the same place.
+   * Extruders have some combination of stepper motors and hotends
+   * so we separate these concepts into the defines:
+   *
+   *  EXTRUDERS    - Number of Selectable Tools
+   *  HOTENDS      - Number of hotends, whether connected or separate
+   *  E_STEPPERS   - Number of actual E stepper motors
+   *  TOOL_E_INDEX - Index to use when getting/setting the tool state
+   *  
    */
-  #if ENABLED(SINGLENOZZLE)
-    #define HOTENDS 1
+  #if ENABLED(SINGLENOZZLE)             // One hotend, multi-extruder
+    #define HOTENDS      1
+    #define E_STEPPERS   EXTRUDERS
+    #define TOOL_E_INDEX current_block->active_extruder
     #undef TEMP_SENSOR_1_AS_REDUNDANT
     #undef HOTEND_OFFSET_X
     #undef HOTEND_OFFSET_Y
-    #define HOTEND_OFFSET_X { 0 }
-    #define HOTEND_OFFSET_Y { 0 }
-  #else
-    #define HOTENDS EXTRUDERS
+  #elif ENABLED(SWITCHING_EXTRUDER)     // One E stepper, unified E axis, two hotends
+    #define HOTENDS      EXTRUDERS
+    #define E_STEPPERS   1
+    #define TOOL_E_INDEX 0
+    #ifndef HOTEND_OFFSET_Z
+      #define HOTEND_OFFSET_Z { 0 }
+    #endif
+  #elif ENABLED(MIXING_EXTRUDER)        // Multi-stepper, unified E axis, one hotend
+    #define HOTENDS      1
+    #define E_STEPPERS   MIXING_STEPPERS
+    #define TOOL_E_INDEX 0
+  #else                                 // One stepper, E axis, and hotend per tool
+    #define HOTENDS      EXTRUDERS
+    #define E_STEPPERS   EXTRUDERS
+    #define TOOL_E_INDEX current_block->active_extruder
+  #endif
+
+  /**
+   * Default hotend offsets, if not defined
+   */
+  #if HOTENDS > 1
+    #ifndef HOTEND_OFFSET_X
+      #define HOTEND_OFFSET_X { 0 } // X offsets for each extruder
+    #endif
+    #ifndef HOTEND_OFFSET_Y
+      #define HOTEND_OFFSET_Y { 0 } // Y offsets for each extruder
+    #endif
+    #if !defined(HOTEND_OFFSET_Z) && (ENABLED(DUAL_X_CARRIAGE) || ENABLED(SWITCHING_EXTRUDER))
+      #define HOTEND_OFFSET_Z { 0 }
+    #endif
   #endif
 
   /**

Marlin/Configuration.h

@@ -152,6 +152,30 @@
 // For Cyclops or any "multi-extruder" that shares a single nozzle.
 //#define SINGLENOZZLE
 
+// A dual extruder that uses a single stepper motor
+// Don't forget to set SSDE_SERVO_ANGLES and HOTEND_OFFSET_X/Y/Z
+//#define SWITCHING_EXTRUDER
+#if ENABLED(SWITCHING_EXTRUDER)
+  #define SWITCHING_EXTRUDER_SERVO_NR 0
+  #define SWITCHING_EXTRUDER_SERVO_ANGLES { 0, 90 } // Angles for E0, E1
+  //#define HOTEND_OFFSET_Z {0.0, 0.0}
+#endif
+
+/**
+ * "Mixing Extruder"
+ *   - Adds a new code, M165, to set the current mix factors.
+ *   - Extends the stepping routines to move multiple steppers in proportion to the mix.
+ *   - Optional support for Repetier Host M163, M164, and virtual extruder.
+ *   - This implementation supports only a single extruder.
+ *   - Enable DIRECT_MIXING_IN_G1 for Pia Taubert's reference implementation
+ */
+//#define MIXING_EXTRUDER
+#if ENABLED(MIXING_EXTRUDER)
+  #define MIXING_STEPPERS 2        // Number of steppers in your mixing extruder
+  #define MIXING_VIRTUAL_TOOLS 16  // Use the Virtual Tool method with M163 and M164
+  //#define DIRECT_MIXING_IN_G1    // Allow ABCDHI mix factors in G1 movement commands
+#endif
+
 // Offset of the extruders (uncomment if using more than one and relying on firmware to position when changing).
 // The offset has to be X=0, Y=0 for the extruder 0 hotend (default extruder).
 // For the other hotends it is their distance from the extruder 0 hotend.
@@ -162,7 +186,6 @@
 // 1 = ATX
 // 2 = X-Box 360 203Watts (the blue wire connected to PS_ON and the red wire to VCC)
 // :{1:'ATX',2:'X-Box 360'}
-
 #define POWER_SUPPLY 1
 
 // Define this to have the electronics keep the power supply off on startup. If you don't know what this is leave it.

Marlin/SanityCheck.h

@@ -162,6 +162,42 @@
   #error "SINGLENOZZLE requires 2 or more EXTRUDERS."
 #endif
 
+/**
+ * Only one type of extruder allowed
+ */
+#if (ENABLED(SWITCHING_EXTRUDER) && (ENABLED(SINGLENOZZLE) || ENABLED(MIXING_EXTRUDER))) \
+  || (ENABLED(SINGLENOZZLE) && ENABLED(MIXING_EXTRUDER))
+    #error "Please define only one type of extruder: SINGLENOZZLE, SWITCHING_EXTRUDER, or MIXING_EXTRUDER."
+#endif
+
+/**
+ * Single Stepper Dual Extruder with switching servo
+ */
+#if ENABLED(SWITCHING_EXTRUDER)
+  #if ENABLED(DUAL_X_CARRIAGE)
+    #error "SINGLENOZZLE and DUAL_X_CARRIAGE are incompatible."
+  #elif EXTRUDERS != 2
+    #error "SWITCHING_EXTRUDER requires exactly 2 EXTRUDERS."
+  #elif NUM_SERVOS < 1
+    #error "SWITCHING_EXTRUDER requires NUM_SERVOS >= 1."
+  #endif
+#endif
+
+/**
+ * Mixing Extruder requirements
+ */
+#if ENABLED(MIXING_EXTRUDER)
+  #if EXTRUDERS > 1
+    #error "MIXING_EXTRUDER currently only supports one extruder."
+  #endif
+  #if MIXING_STEPPERS < 2
+    #error "You must set MIXING_STEPPERS >= 2 for a mixing extruder."
+  #endif
+  #if ENABLED(FILAMENT_SENSOR)
+    #error "MIXING_EXTRUDER is incompatible with FILAMENT_SENSOR. Comment out this line to use it anyway."
+  #endif
+#endif
+
 /**
  * Limited number of servos
  */

Marlin/example_configurations/Cartesio/Configuration.h

@@ -153,6 +153,30 @@
 // For Cyclops or any "multi-extruder" that shares a single nozzle.
 //#define SINGLENOZZLE
 
+// A dual extruder that uses a single stepper motor
+// Don't forget to set SSDE_SERVO_ANGLES and HOTEND_OFFSET_X/Y/Z
+//#define SWITCHING_EXTRUDER
+#if ENABLED(SWITCHING_EXTRUDER)
+  #define SWITCHING_EXTRUDER_SERVO_NR 0
+  #define SWITCHING_EXTRUDER_SERVO_ANGLES { 0, 90 } // Angles for E0, E1
+  //#define HOTEND_OFFSET_Z {0.0, 0.0}
+#endif
+
+/**
+ * "Mixing Extruder"
+ *   - Adds a new code, M165, to set the current mix factors.
+ *   - Extends the stepping routines to move multiple steppers in proportion to the mix.
+ *   - Optional support for Repetier Host M163, M164, and virtual extruder.
+ *   - This implementation supports only a single extruder.
+ *   - Enable DIRECT_MIXING_IN_G1 for Pia Taubert's reference implementation
+ */
+//#define MIXING_EXTRUDER
+#if ENABLED(MIXING_EXTRUDER)
+  #define MIXING_STEPPERS 2        // Number of steppers in your mixing extruder
+  #define MIXING_VIRTUAL_TOOLS 16  // Use the Virtual Tool method with M163 and M164
+  //#define DIRECT_MIXING_IN_G1    // Allow ABCDHI mix factors in G1 movement commands
+#endif
+
 // Offset of the extruders (uncomment if using more than one and relying on firmware to position when changing).
 // The offset has to be X=0, Y=0 for the extruder 0 hotend (default extruder).
 // For the other hotends it is their distance from the extruder 0 hotend.
@@ -163,7 +187,6 @@
 // 1 = ATX
 // 2 = X-Box 360 203Watts (the blue wire connected to PS_ON and the red wire to VCC)
 // :{1:'ATX',2:'X-Box 360'}
-
 #define POWER_SUPPLY 1
 
 // Define this to have the electronics keep the power supply off on startup. If you don't know what this is leave it.

Marlin/example_configurations/Felix/Configuration.h

@@ -152,6 +152,30 @@
 // For Cyclops or any "multi-extruder" that shares a single nozzle.
 //#define SINGLENOZZLE
 
+// A dual extruder that uses a single stepper motor
+// Don't forget to set SSDE_SERVO_ANGLES and HOTEND_OFFSET_X/Y/Z
+//#define SWITCHING_EXTRUDER
+#if ENABLED(SWITCHING_EXTRUDER)
+  #define SWITCHING_EXTRUDER_SERVO_NR 0
+  #define SWITCHING_EXTRUDER_SERVO_ANGLES { 0, 90 } // Angles for E0, E1
+  //#define HOTEND_OFFSET_Z {0.0, 0.0}
+#endif
+
+/**
+ * "Mixing Extruder"
+ *   - Adds a new code, M165, to set the current mix factors.
+ *   - Extends the stepping routines to move multiple steppers in proportion to the mix.
+ *   - Optional support for Repetier Host M163, M164, and virtual extruder.
+ *   - This implementation supports only a single extruder.
+ *   - Enable DIRECT_MIXING_IN_G1 for Pia Taubert's reference implementation
+ */
+//#define MIXING_EXTRUDER
+#if ENABLED(MIXING_EXTRUDER)
+  #define MIXING_STEPPERS 2        // Number of steppers in your mixing extruder
+  #define MIXING_VIRTUAL_TOOLS 16  // Use the Virtual Tool method with M163 and M164
+  //#define DIRECT_MIXING_IN_G1    // Allow ABCDHI mix factors in G1 movement commands
+#endif
+
 // Offset of the extruders (uncomment if using more than one and relying on firmware to position when changing).
 // The offset has to be X=0, Y=0 for the extruder 0 hotend (default extruder).
 // For the other hotends it is their distance from the extruder 0 hotend.
@@ -162,7 +186,6 @@
 // 1 = ATX
 // 2 = X-Box 360 203Watts (the blue wire connected to PS_ON and the red wire to VCC)
 // :{1:'ATX',2:'X-Box 360'}
-
 #define POWER_SUPPLY 1
 
 // Define this to have the electronics keep the power supply off on startup. If you don't know what this is leave it.

Marlin/example_configurations/Felix/DUAL/Configuration.h

@@ -152,6 +152,30 @@
 // For Cyclops or any "multi-extruder" that shares a single nozzle.
 //#define SINGLENOZZLE
 
+// A dual extruder that uses a single stepper motor
+// Don't forget to set SSDE_SERVO_ANGLES and HOTEND_OFFSET_X/Y/Z
+//#define SWITCHING_EXTRUDER
+#if ENABLED(SWITCHING_EXTRUDER)
+  #define SWITCHING_EXTRUDER_SERVO_NR 0
+  #define SWITCHING_EXTRUDER_SERVO_ANGLES { 0, 90 } // Angles for E0, E1
+  //#define HOTEND_OFFSET_Z {0.0, 0.0}
+#endif
+
+/**
+ * "Mixing Extruder"
+ *   - Adds a new code, M165, to set the current mix factors.
+ *   - Extends the stepping routines to move multiple steppers in proportion to the mix.
+ *   - Optional support for Repetier Host M163, M164, and virtual extruder.
+ *   - This implementation supports only a single extruder.
+ *   - Enable DIRECT_MIXING_IN_G1 for Pia Taubert's reference implementation
+ */
+//#define MIXING_EXTRUDER
+#if ENABLED(MIXING_EXTRUDER)
+  #define MIXING_STEPPERS 2        // Number of steppers in your mixing extruder
+  #define MIXING_VIRTUAL_TOOLS 16  // Use the Virtual Tool method with M163 and M164
+  //#define DIRECT_MIXING_IN_G1    // Allow ABCDHI mix factors in G1 movement commands
+#endif
+
 // Offset of the extruders (uncomment if using more than one and relying on firmware to position when changing).
 // The offset has to be X=0, Y=0 for the extruder 0 hotend (default extruder).
 // For the other hotends it is their distance from the extruder 0 hotend.
@@ -162,7 +186,6 @@
 // 1 = ATX
 // 2 = X-Box 360 203Watts (the blue wire connected to PS_ON and the red wire to VCC)
 // :{1:'ATX',2:'X-Box 360'}
-
 #define POWER_SUPPLY 1
 
 // Define this to have the electronics keep the power supply off on startup. If you don't know what this is leave it.

Marlin/example_configurations/Hephestos/Configuration.h

@@ -155,6 +155,30 @@
 // For Cyclops or any "multi-extruder" that shares a single nozzle.
 //#define SINGLENOZZLE
 
+// A dual extruder that uses a single stepper motor
+// Don't forget to set SSDE_SERVO_ANGLES and HOTEND_OFFSET_X/Y/Z
+//#define SWITCHING_EXTRUDER
+#if ENABLED(SWITCHING_EXTRUDER)
+  #define SWITCHING_EXTRUDER_SERVO_NR 0
+  #define SWITCHING_EXTRUDER_SERVO_ANGLES { 0, 90 } // Angles for E0, E1
+  //#define HOTEND_OFFSET_Z {0.0, 0.0}
+#endif
+
+/**
+ * "Mixing Extruder"
+ *   - Adds a new code, M165, to set the current mix factors.
+ *   - Extends the stepping routines to move multiple steppers in proportion to the mix.
+ *   - Optional support for Repetier Host M163, M164, and virtual extruder.
+ *   - This implementation supports only a single extruder.
+ *   - Enable DIRECT_MIXING_IN_G1 for Pia Taubert's reference implementation
+ */
+//#define MIXING_EXTRUDER
+#if ENABLED(MIXING_EXTRUDER)
+  #define MIXING_STEPPERS 2        // Number of steppers in your mixing extruder
+  #define MIXING_VIRTUAL_TOOLS 16  // Use the Virtual Tool method with M163 and M164
+  //#define DIRECT_MIXING_IN_G1    // Allow ABCDHI mix factors in G1 movement commands
+#endif
+
 // Offset of the extruders (uncomment if using more than one and relying on firmware to position when changing).
 // The offset has to be X=0, Y=0 for the extruder 0 hotend (default extruder).
 // For the other hotends it is their distance from the extruder 0 hotend.
@@ -165,7 +189,6 @@
 // 1 = ATX
 // 2 = X-Box 360 203Watts (the blue wire connected to PS_ON and the red wire to VCC)
 // :{1:'ATX',2:'X-Box 360'}
-
 #define POWER_SUPPLY 1
 
 // Define this to have the electronics keep the power supply off on startup. If you don't know what this is leave it.

Marlin/example_configurations/Hephestos_2/Configuration.h

@@ -152,6 +152,30 @@
 // For Cyclops or any "multi-extruder" that shares a single nozzle.
 //#define SINGLENOZZLE
 
+// A dual extruder that uses a single stepper motor
+// Don't forget to set SSDE_SERVO_ANGLES and HOTEND_OFFSET_X/Y/Z
+//#define SWITCHING_EXTRUDER
+#if ENABLED(SWITCHING_EXTRUDER)
+  #define SWITCHING_EXTRUDER_SERVO_NR 0
+  #define SWITCHING_EXTRUDER_SERVO_ANGLES { 0, 90 } // Angles for E0, E1
+  //#define HOTEND_OFFSET_Z {0.0, 0.0}
+#endif
+
+/**
+ * "Mixing Extruder"
+ *   - Adds a new code, M165, to set the current mix factors.
+ *   - Extends the stepping routines to move multiple steppers in proportion to the mix.
+ *   - Optional support for Repetier Host M163, M164, and virtual extruder.
+ *   - This implementation supports only a single extruder.
+ *   - Enable DIRECT_MIXING_IN_G1 for Pia Taubert's reference implementation
+ */
+//#define MIXING_EXTRUDER
+#if ENABLED(MIXING_EXTRUDER)
+  #define MIXING_STEPPERS 2        // Number of steppers in your mixing extruder
+  #define MIXING_VIRTUAL_TOOLS 16  // Use the Virtual Tool method with M163 and M164
+  //#define DIRECT_MIXING_IN_G1    // Allow ABCDHI mix factors in G1 movement commands
+#endif
+
 // Offset of the extruders (uncomment if using more than one and relying on firmware to position when changing).
 // The offset has to be X=0, Y=0 for the extruder 0 hotend (default extruder).
 // For the other hotends it is their distance from the extruder 0 hotend.
@@ -162,7 +186,6 @@
 // 1 = ATX
 // 2 = X-Box 360 203Watts (the blue wire connected to PS_ON and the red wire to VCC)
 // :{1:'ATX',2:'X-Box 360'}
-
 #define POWER_SUPPLY 1
 
 // Define this to have the electronics keep the power supply off on startup. If you don't know what this is leave it.

Marlin/example_configurations/K8200/Configuration.h

@@ -159,6 +159,30 @@
 // For Cyclops or any "multi-extruder" that shares a single nozzle.
 //#define SINGLENOZZLE
 
+// A dual extruder that uses a single stepper motor
+// Don't forget to set SSDE_SERVO_ANGLES and HOTEND_OFFSET_X/Y/Z
+//#define SWITCHING_EXTRUDER
+#if ENABLED(SWITCHING_EXTRUDER)
+  #define SWITCHING_EXTRUDER_SERVO_NR 0
+  #define SWITCHING_EXTRUDER_SERVO_ANGLES { 0, 90 } // Angles for E0, E1
+  //#define HOTEND_OFFSET_Z {0.0, 0.0}
+#endif
+
+/**
+ * "Mixing Extruder"
+ *   - Adds a new code, M165, to set the current mix factors.
+ *   - Extends the stepping routines to move multiple steppers in proportion to the mix.
+ *   - Optional support for Repetier Host M163, M164, and virtual extruder.
+ *   - This implementation supports only a single extruder.
+ *   - Enable DIRECT_MIXING_IN_G1 for Pia Taubert's reference implementation
+ */
+//#define MIXING_EXTRUDER
+#if ENABLED(MIXING_EXTRUDER)
+  #define MIXING_STEPPERS 2        // Number of steppers in your mixing extruder
+  #define MIXING_VIRTUAL_TOOLS 16  // Use the Virtual Tool method with M163 and M164
+  //#define DIRECT_MIXING_IN_G1    // Allow ABCDHI mix factors in G1 movement commands
+#endif
+
 // Offset of the extruders (uncomment if using more than one and relying on firmware to position when changing).
 // The offset has to be X=0, Y=0 for the extruder 0 hotend (default extruder).
 // For the other hotends it is their distance from the extruder 0 hotend.
@@ -169,7 +193,6 @@
 // 1 = ATX
 // 2 = X-Box 360 203Watts (the blue wire connected to PS_ON and the red wire to VCC)
 // :{1:'ATX',2:'X-Box 360'}
-
 #define POWER_SUPPLY 1
 
 // Define this to have the electronics keep the power supply off on startup. If you don't know what this is leave it.

Marlin/example_configurations/RepRapWorld/Megatronics/Configuration.h

@@ -152,6 +152,30 @@
 // For Cyclops or any "multi-extruder" that shares a single nozzle.
 //#define SINGLENOZZLE
 
+// A dual extruder that uses a single stepper motor
+// Don't forget to set SSDE_SERVO_ANGLES and HOTEND_OFFSET_X/Y/Z
+//#define SWITCHING_EXTRUDER
+#if ENABLED(SWITCHING_EXTRUDER)
+  #define SWITCHING_EXTRUDER_SERVO_NR 0
+  #define SWITCHING_EXTRUDER_SERVO_ANGLES { 0, 90 } // Angles for E0, E1
+  //#define HOTEND_OFFSET_Z {0.0, 0.0}
+#endif
+
+/**
+ * "Mixing Extruder"
+ *   - Adds a new code, M165, to set the current mix factors.
+ *   - Extends the stepping routines to move multiple steppers in proportion to the mix.
+ *   - Optional support for Repetier Host M163, M164, and virtual extruder.
+ *   - This implementation supports only a single extruder.
+ *   - Enable DIRECT_MIXING_IN_G1 for Pia Taubert's reference implementation
+ */
+//#define MIXING_EXTRUDER
+#if ENABLED(MIXING_EXTRUDER)
+  #define MIXING_STEPPERS 2        // Number of steppers in your mixing extruder
+  #define MIXING_VIRTUAL_TOOLS 16  // Use the Virtual Tool method with M163 and M164
+  //#define DIRECT_MIXING_IN_G1    // Allow ABCDHI mix factors in G1 movement commands
+#endif
+
 // Offset of the extruders (uncomment if using more than one and relying on firmware to position when changing).
 // The offset has to be X=0, Y=0 for the extruder 0 hotend (default extruder).
 // For the other hotends it is their distance from the extruder 0 hotend.
@@ -162,7 +186,6 @@
 // 1 = ATX
 // 2 = X-Box 360 203Watts (the blue wire connected to PS_ON and the red wire to VCC)
 // :{1:'ATX',2:'X-Box 360'}
-
 #define POWER_SUPPLY 1
 
 // Define this to have the electronics keep the power supply off on startup. If you don't know what this is leave it.

Marlin/example_configurations/RigidBot/Configuration.h

@@ -155,6 +155,30 @@
 // For Cyclops or any "multi-extruder" that shares a single nozzle.
 //#define SINGLENOZZLE
 
+// A dual extruder that uses a single stepper motor
+// Don't forget to set SSDE_SERVO_ANGLES and HOTEND_OFFSET_X/Y/Z
+//#define SWITCHING_EXTRUDER
+#if ENABLED(SWITCHING_EXTRUDER)
+  #define SWITCHING_EXTRUDER_SERVO_NR 0
+  #define SWITCHING_EXTRUDER_SERVO_ANGLES { 0, 90 } // Angles for E0, E1
+  //#define HOTEND_OFFSET_Z {0.0, 0.0}
+#endif
+
+/**
+ * "Mixing Extruder"
+ *   - Adds a new code, M165, to set the current mix factors.
+ *   - Extends the stepping routines to move multiple steppers in proportion to the mix.
+ *   - Optional support for Repetier Host M163, M164, and virtual extruder.
+ *   - This implementation supports only a single extruder.
+ *   - Enable DIRECT_MIXING_IN_G1 for Pia Taubert's reference implementation
+ */
+//#define MIXING_EXTRUDER
+#if ENABLED(MIXING_EXTRUDER)
+  #define MIXING_STEPPERS 2        // Number of steppers in your mixing extruder
+  #define MIXING_VIRTUAL_TOOLS 16  // Use the Virtual Tool method with M163 and M164
+  //#define DIRECT_MIXING_IN_G1    // Allow ABCDHI mix factors in G1 movement commands
+#endif
+
 // Offset of the extruders (uncomment if using more than one and relying on firmware to position when changing).
 // The offset has to be X=0, Y=0 for the extruder 0 hotend (default extruder).
 // For the other hotends it is their distance from the extruder 0 hotend.
@@ -165,7 +189,6 @@
 // 1 = ATX
 // 2 = X-Box 360 203Watts (the blue wire connected to PS_ON and the red wire to VCC)
 // :{1:'ATX',2:'X-Box 360'}
-
 #define POWER_SUPPLY 1
 
 // Define this to have the electronics keep the power supply off on startup. If you don't know what this is leave it.

Marlin/example_configurations/SCARA/Configuration.h

@@ -177,6 +177,30 @@
 // For Cyclops or any "multi-extruder" that shares a single nozzle.
 //#define SINGLENOZZLE
 
+// A dual extruder that uses a single stepper motor
+// Don't forget to set SSDE_SERVO_ANGLES and HOTEND_OFFSET_X/Y/Z
+//#define SWITCHING_EXTRUDER
+#if ENABLED(SWITCHING_EXTRUDER)
+  #define SWITCHING_EXTRUDER_SERVO_NR 0
+  #define SWITCHING_EXTRUDER_SERVO_ANGLES { 0, 90 } // Angles for E0, E1
+  //#define HOTEND_OFFSET_Z {0.0, 0.0}
+#endif
+
+/**
+ * "Mixing Extruder"
+ *   - Adds a new code, M165, to set the current mix factors.
+ *   - Extends the stepping routines to move multiple steppers in proportion to the mix.
+ *   - Optional support for Repetier Host M163, M164, and virtual extruder.
+ *   - This implementation supports only a single extruder.
+ *   - Enable DIRECT_MIXING_IN_G1 for Pia Taubert's reference implementation
+ */
+//#define MIXING_EXTRUDER
+#if ENABLED(MIXING_EXTRUDER)
+  #define MIXING_STEPPERS 2        // Number of steppers in your mixing extruder
+  #define MIXING_VIRTUAL_TOOLS 16  // Use the Virtual Tool method with M163 and M164
+  //#define DIRECT_MIXING_IN_G1    // Allow ABCDHI mix factors in G1 movement commands
+#endif
+
 // Offset of the extruders (uncomment if using more than one and relying on firmware to position when changing).
 // The offset has to be X=0, Y=0 for the extruder 0 hotend (default extruder).
 // For the other hotends it is their distance from the extruder 0 hotend.
@@ -187,7 +211,6 @@
 // 1 = ATX
 // 2 = X-Box 360 203Watts (the blue wire connected to PS_ON and the red wire to VCC)
 // :{1:'ATX',2:'X-Box 360'}
-
 #define POWER_SUPPLY 1
 
 // Define this to have the electronics keep the power supply off on startup. If you don't know what this is leave it.

Marlin/example_configurations/TAZ4/Configuration.h

@@ -152,6 +152,30 @@
 // For Cyclops or any "multi-extruder" that shares a single nozzle.
 //#define SINGLENOZZLE
 
+// A dual extruder that uses a single stepper motor
+// Don't forget to set SSDE_SERVO_ANGLES and HOTEND_OFFSET_X/Y/Z
+//#define SWITCHING_EXTRUDER
+#if ENABLED(SWITCHING_EXTRUDER)
+  #define SWITCHING_EXTRUDER_SERVO_NR 0
+  #define SWITCHING_EXTRUDER_SERVO_ANGLES { 0, 90 } // Angles for E0, E1
+  //#define HOTEND_OFFSET_Z {0.0, 0.0}
+#endif
+
+/**
+ * "Mixing Extruder"
+ *   - Adds a new code, M165, to set the current mix factors.
+ *   - Extends the stepping routines to move multiple steppers in proportion to the mix.
+ *   - Optional support for Repetier Host M163, M164, and virtual extruder.
+ *   - This implementation supports only a single extruder.
+ *   - Enable DIRECT_MIXING_IN_G1 for Pia Taubert's reference implementation
+ */
+//#define MIXING_EXTRUDER
+#if ENABLED(MIXING_EXTRUDER)
+  #define MIXING_STEPPERS 2        // Number of steppers in your mixing extruder
+  #define MIXING_VIRTUAL_TOOLS 16  // Use the Virtual Tool method with M163 and M164
+  //#define DIRECT_MIXING_IN_G1    // Allow ABCDHI mix factors in G1 movement commands
+#endif
+
 // Offset of the extruders (uncomment if using more than one and relying on firmware to position when changing).
 // The offset has to be X=0, Y=0 for the extruder 0 hotend (default extruder).
 // For the other hotends it is their distance from the extruder 0 hotend.
@@ -162,7 +186,6 @@
 // 1 = ATX
 // 2 = X-Box 360 203Watts (the blue wire connected to PS_ON and the red wire to VCC)
 // :{1:'ATX',2:'X-Box 360'}
-
 #define POWER_SUPPLY 1
 
 // Define this to have the electronics keep the power supply off on startup. If you don't know what this is leave it.

Marlin/example_configurations/WITBOX/Configuration.h

@@ -155,6 +155,30 @@
 // For Cyclops or any "multi-extruder" that shares a single nozzle.
 //#define SINGLENOZZLE
 
+// A dual extruder that uses a single stepper motor
+// Don't forget to set SSDE_SERVO_ANGLES and HOTEND_OFFSET_X/Y/Z
+//#define SWITCHING_EXTRUDER
+#if ENABLED(SWITCHING_EXTRUDER)
+  #define SWITCHING_EXTRUDER_SERVO_NR 0
+  #define SWITCHING_EXTRUDER_SERVO_ANGLES { 0, 90 } // Angles for E0, E1
+  //#define HOTEND_OFFSET_Z {0.0, 0.0}
+#endif
+
+/**
+ * "Mixing Extruder"
+ *   - Adds a new code, M165, to set the current mix factors.
+ *   - Extends the stepping routines to move multiple steppers in proportion to the mix.
+ *   - Optional support for Repetier Host M163, M164, and virtual extruder.
+ *   - This implementation supports only a single extruder.
+ *   - Enable DIRECT_MIXING_IN_G1 for Pia Taubert's reference implementation
+ */
+//#define MIXING_EXTRUDER
+#if ENABLED(MIXING_EXTRUDER)
+  #define MIXING_STEPPERS 2        // Number of steppers in your mixing extruder
+  #define MIXING_VIRTUAL_TOOLS 16  // Use the Virtual Tool method with M163 and M164
+  //#define DIRECT_MIXING_IN_G1    // Allow ABCDHI mix factors in G1 movement commands
+#endif
+
 // Offset of the extruders (uncomment if using more than one and relying on firmware to position when changing).
 // The offset has to be X=0, Y=0 for the extruder 0 hotend (default extruder).
 // For the other hotends it is their distance from the extruder 0 hotend.
@@ -165,7 +189,6 @@
 // 1 = ATX
 // 2 = X-Box 360 203Watts (the blue wire connected to PS_ON and the red wire to VCC)
 // :{1:'ATX',2:'X-Box 360'}
-
 #define POWER_SUPPLY 1
 
 // Define this to have the electronics keep the power supply off on startup. If you don't know what this is leave it.

Marlin/example_configurations/adafruit/ST7565/Configuration.h

@@ -152,6 +152,30 @@
 // For Cyclops or any "multi-extruder" that shares a single nozzle.
 //#define SINGLENOZZLE
 
+// A dual extruder that uses a single stepper motor
+// Don't forget to set SSDE_SERVO_ANGLES and HOTEND_OFFSET_X/Y/Z
+//#define SWITCHING_EXTRUDER
+#if ENABLED(SWITCHING_EXTRUDER)
+  #define SWITCHING_EXTRUDER_SERVO_NR 0
+  #define SWITCHING_EXTRUDER_SERVO_ANGLES { 0, 90 } // Angles for E0, E1
+  //#define HOTEND_OFFSET_Z {0.0, 0.0}
+#endif
+
+/**
+ * "Mixing Extruder"
+ *   - Adds a new code, M165, to set the current mix factors.
+ *   - Extends the stepping routines to move multiple steppers in proportion to the mix.
+ *   - Optional support for Repetier Host M163, M164, and virtual extruder.
+ *   - This implementation supports only a single extruder.
+ *   - Enable DIRECT_MIXING_IN_G1 for Pia Taubert's reference implementation
+ */
+//#define MIXING_EXTRUDER
+#if ENABLED(MIXING_EXTRUDER)
+  #define MIXING_STEPPERS 2        // Number of steppers in your mixing extruder
+  #define MIXING_VIRTUAL_TOOLS 16  // Use the Virtual Tool method with M163 and M164
+  //#define DIRECT_MIXING_IN_G1    // Allow ABCDHI mix factors in G1 movement commands
+#endif
+
 // Offset of the extruders (uncomment if using more than one and relying on firmware to position when changing).
 // The offset has to be X=0, Y=0 for the extruder 0 hotend (default extruder).
 // For the other hotends it is their distance from the extruder 0 hotend.
@@ -162,7 +186,6 @@
 // 1 = ATX
 // 2 = X-Box 360 203Watts (the blue wire connected to PS_ON and the red wire to VCC)
 // :{1:'ATX',2:'X-Box 360'}
-
 #define POWER_SUPPLY 1
 
 // Define this to have the electronics keep the power supply off on startup. If you don't know what this is leave it.

Marlin/example_configurations/delta/biv2.5/Configuration.h

@@ -152,6 +152,30 @@
 // For Cyclops or any "multi-extruder" that shares a single nozzle.
 //#define SINGLENOZZLE
 
+// A dual extruder that uses a single stepper motor
+// Don't forget to set SSDE_SERVO_ANGLES and HOTEND_OFFSET_X/Y/Z
+//#define SWITCHING_EXTRUDER
+#if ENABLED(SWITCHING_EXTRUDER)
+  #define SWITCHING_EXTRUDER_SERVO_NR 0
+  #define SWITCHING_EXTRUDER_SERVO_ANGLES { 0, 90 } // Angles for E0, E1
+  //#define HOTEND_OFFSET_Z {0.0, 0.0}
+#endif
+
+/**
+ * "Mixing Extruder"
+ *   - Adds a new code, M165, to set the current mix factors.
+ *   - Extends the stepping routines to move multiple steppers in proportion to the mix.
+ *   - Optional support for Repetier Host M163, M164, and virtual extruder.
+ *   - This implementation supports only a single extruder.
+ *   - Enable DIRECT_MIXING_IN_G1 for Pia Taubert's reference implementation
+ */
+//#define MIXING_EXTRUDER
+#if ENABLED(MIXING_EXTRUDER)
+  #define MIXING_STEPPERS 2        // Number of steppers in your mixing extruder
+  #define MIXING_VIRTUAL_TOOLS 16  // Use the Virtual Tool method with M163 and M164
+  //#define DIRECT_MIXING_IN_G1    // Allow ABCDHI mix factors in G1 movement commands
+#endif
+
 // Offset of the extruders (uncomment if using more than one and relying on firmware to position when changing).
 // The offset has to be X=0, Y=0 for the extruder 0 hotend (default extruder).
 // For the other hotends it is their distance from the extruder 0 hotend.
@@ -162,7 +186,6 @@
 // 1 = ATX
 // 2 = X-Box 360 203Watts (the blue wire connected to PS_ON and the red wire to VCC)
 // :{1:'ATX',2:'X-Box 360'}
-
 #define POWER_SUPPLY 1
 
 // Define this to have the electronics keep the power supply off on startup. If you don't know what this is leave it.

Marlin/example_configurations/delta/generic/Configuration.h

@@ -152,6 +152,30 @@
 // For Cyclops or any "multi-extruder" that shares a single nozzle.
 //#define SINGLENOZZLE
 
+// A dual extruder that uses a single stepper motor
+// Don't forget to set SSDE_SERVO_ANGLES and HOTEND_OFFSET_X/Y/Z
+//#define SWITCHING_EXTRUDER
+#if ENABLED(SWITCHING_EXTRUDER)
+  #define SWITCHING_EXTRUDER_SERVO_NR 0
+  #define SWITCHING_EXTRUDER_SERVO_ANGLES { 0, 90 } // Angles for E0, E1
+  //#define HOTEND_OFFSET_Z {0.0, 0.0}
+#endif
+
+/**
+ * "Mixing Extruder"
+ *   - Adds a new code, M165, to set the current mix factors.
+ *   - Extends the stepping routines to move multiple steppers in proportion to the mix.
+ *   - Optional support for Repetier Host M163, M164, and virtual extruder.
+ *   - This implementation supports only a single extruder.
+ *   - Enable DIRECT_MIXING_IN_G1 for Pia Taubert's reference implementation
+ */
+//#define MIXING_EXTRUDER
+#if ENABLED(MIXING_EXTRUDER)
+  #define MIXING_STEPPERS 2        // Number of steppers in your mixing extruder
+  #define MIXING_VIRTUAL_TOOLS 16  // Use the Virtual Tool method with M163 and M164
+  //#define DIRECT_MIXING_IN_G1    // Allow ABCDHI mix factors in G1 movement commands
+#endif
+
 // Offset of the extruders (uncomment if using more than one and relying on firmware to position when changing).
 // The offset has to be X=0, Y=0 for the extruder 0 hotend (default extruder).
 // For the other hotends it is their distance from the extruder 0 hotend.
@@ -162,7 +186,6 @@
 // 1 = ATX
 // 2 = X-Box 360 203Watts (the blue wire connected to PS_ON and the red wire to VCC)
 // :{1:'ATX',2:'X-Box 360'}
-
 #define POWER_SUPPLY 1
 
 // Define this to have the electronics keep the power supply off on startup. If you don't know what this is leave it.

Marlin/example_configurations/delta/kossel_mini/Configuration.h

@@ -152,6 +152,30 @@
 // For Cyclops or any "multi-extruder" that shares a single nozzle.
 //#define SINGLENOZZLE
 
+// A dual extruder that uses a single stepper motor
+// Don't forget to set SSDE_SERVO_ANGLES and HOTEND_OFFSET_X/Y/Z
+//#define SWITCHING_EXTRUDER
+#if ENABLED(SWITCHING_EXTRUDER)
+  #define SWITCHING_EXTRUDER_SERVO_NR 0
+  #define SWITCHING_EXTRUDER_SERVO_ANGLES { 0, 90 } // Angles for E0, E1
+  //#define HOTEND_OFFSET_Z {0.0, 0.0}
+#endif
+
+/**
+ * "Mixing Extruder"
+ *   - Adds a new code, M165, to set the current mix factors.
+ *   - Extends the stepping routines to move multiple steppers in proportion to the mix.
+ *   - Optional support for Repetier Host M163, M164, and virtual extruder.
+ *   - This implementation supports only a single extruder.
+ *   - Enable DIRECT_MIXING_IN_G1 for Pia Taubert's reference implementation
+ */
+//#define MIXING_EXTRUDER
+#if ENABLED(MIXING_EXTRUDER)
+  #define MIXING_STEPPERS 2        // Number of steppers in your mixing extruder
+  #define MIXING_VIRTUAL_TOOLS 16  // Use the Virtual Tool method with M163 and M164
+  //#define DIRECT_MIXING_IN_G1    // Allow ABCDHI mix factors in G1 movement commands
+#endif
+
 // Offset of the extruders (uncomment if using more than one and relying on firmware to position when changing).
 // The offset has to be X=0, Y=0 for the extruder 0 hotend (default extruder).
 // For the other hotends it is their distance from the extruder 0 hotend.
@@ -162,7 +186,6 @@
 // 1 = ATX
 // 2 = X-Box 360 203Watts (the blue wire connected to PS_ON and the red wire to VCC)
 // :{1:'ATX',2:'X-Box 360'}
-
 #define POWER_SUPPLY 1
 
 // Define this to have the electronics keep the power supply off on startup. If you don't know what this is leave it.

Marlin/example_configurations/delta/kossel_pro/Configuration.h

@@ -158,6 +158,30 @@
 // For Cyclops or any "multi-extruder" that shares a single nozzle.
 //#define SINGLENOZZLE
 
+// A dual extruder that uses a single stepper motor
+// Don't forget to set SSDE_SERVO_ANGLES and HOTEND_OFFSET_X/Y/Z
+//#define SWITCHING_EXTRUDER
+#if ENABLED(SWITCHING_EXTRUDER)
+  #define SWITCHING_EXTRUDER_SERVO_NR 0
+  #define SWITCHING_EXTRUDER_SERVO_ANGLES { 0, 90 } // Angles for E0, E1
+  //#define HOTEND_OFFSET_Z {0.0, 0.0}
+#endif
+
+/**
+ * "Mixing Extruder"
+ *   - Adds a new code, M165, to set the current mix factors.
+ *   - Extends the stepping routines to move multiple steppers in proportion to the mix.
+ *   - Optional support for Repetier Host M163, M164, and virtual extruder.
+ *   - This implementation supports only a single extruder.
+ *   - Enable DIRECT_MIXING_IN_G1 for Pia Taubert's reference implementation
+ */
+//#define MIXING_EXTRUDER
+#if ENABLED(MIXING_EXTRUDER)
+  #define MIXING_STEPPERS 2        // Number of steppers in your mixing extruder
+  #define MIXING_VIRTUAL_TOOLS 16  // Use the Virtual Tool method with M163 and M164
+  //#define DIRECT_MIXING_IN_G1    // Allow ABCDHI mix factors in G1 movement commands
+#endif
+
 // Offset of the extruders (uncomment if using more than one and relying on firmware to position when changing).
 // The offset has to be X=0, Y=0 for the extruder 0 hotend (default extruder).
 // For the other hotends it is their distance from the extruder 0 hotend.
@@ -168,7 +192,6 @@
 // 1 = ATX
 // 2 = X-Box 360 203Watts (the blue wire connected to PS_ON and the red wire to VCC)
 // :{1:'ATX',2:'X-Box 360'}
-
 #define POWER_SUPPLY 1
 
 // Define this to have the electronics keep the power supply off on startup. If you don't know what this is leave it.

Marlin/example_configurations/delta/kossel_xl/Configuration.h

@@ -145,6 +145,30 @@
 // For Cyclops or any "multi-extruder" that shares a single nozzle.
 //#define SINGLENOZZLE
 
+// A dual extruder that uses a single stepper motor
+// Don't forget to set SSDE_SERVO_ANGLES and HOTEND_OFFSET_X/Y/Z
+//#define SWITCHING_EXTRUDER
+#if ENABLED(SWITCHING_EXTRUDER)
+  #define SWITCHING_EXTRUDER_SERVO_NR 0
+  #define SWITCHING_EXTRUDER_SERVO_ANGLES { 0, 90 } // Angles for E0, E1
+  //#define HOTEND_OFFSET_Z {0.0, 0.0}
+#endif
+
+/**
+ * "Mixing Extruder"
+ *   - Adds a new code, M165, to set the current mix factors.
+ *   - Extends the stepping routines to move multiple steppers in proportion to the mix.
+ *   - Optional support for Repetier Host M163, M164, and virtual extruder.
+ *   - This implementation supports only a single extruder.
+ *   - Enable DIRECT_MIXING_IN_G1 for Pia Taubert's reference implementation
+ */
+//#define MIXING_EXTRUDER
+#if ENABLED(MIXING_EXTRUDER)
+  #define MIXING_STEPPERS 2        // Number of steppers in your mixing extruder
+  #define MIXING_VIRTUAL_TOOLS 16  // Use the Virtual Tool method with M163 and M164
+  //#define DIRECT_MIXING_IN_G1    // Allow ABCDHI mix factors in G1 movement commands
+#endif
+
 // Offset of the extruders (uncomment if using more than one and relying on firmware to position when changing).
 // The offset has to be X=0, Y=0 for the extruder 0 hotend (default extruder).
 // For the other hotends it is their distance from the extruder 0 hotend.
@@ -155,7 +179,6 @@
 // 1 = ATX
 // 2 = X-Box 360 203Watts (the blue wire connected to PS_ON and the red wire to VCC)
 // :{1:'ATX',2:'X-Box 360'}
-
 #define POWER_SUPPLY 2
 
 // Define this to have the electronics keep the power supply off on startup. If you don't know what this is leave it.

Marlin/example_configurations/makibox/Configuration.h

@@ -152,6 +152,30 @@
 // For Cyclops or any "multi-extruder" that shares a single nozzle.
 //#define SINGLENOZZLE
 
+// A dual extruder that uses a single stepper motor
+// Don't forget to set SSDE_SERVO_ANGLES and HOTEND_OFFSET_X/Y/Z
+//#define SWITCHING_EXTRUDER
+#if ENABLED(SWITCHING_EXTRUDER)
+  #define SWITCHING_EXTRUDER_SERVO_NR 0
+  #define SWITCHING_EXTRUDER_SERVO_ANGLES { 0, 90 } // Angles for E0, E1
+  //#define HOTEND_OFFSET_Z {0.0, 0.0}
+#endif
+
+/**
+ * "Mixing Extruder"
+ *   - Adds a new code, M165, to set the current mix factors.
+ *   - Extends the stepping routines to move multiple steppers in proportion to the mix.
+ *   - Optional support for Repetier Host M163, M164, and virtual extruder.
+ *   - This implementation supports only a single extruder.
+ *   - Enable DIRECT_MIXING_IN_G1 for Pia Taubert's reference implementation
+ */
+//#define MIXING_EXTRUDER
+#if ENABLED(MIXING_EXTRUDER)
+  #define MIXING_STEPPERS 2        // Number of steppers in your mixing extruder
+  #define MIXING_VIRTUAL_TOOLS 16  // Use the Virtual Tool method with M163 and M164
+  //#define DIRECT_MIXING_IN_G1    // Allow ABCDHI mix factors in G1 movement commands
+#endif
+
 // Offset of the extruders (uncomment if using more than one and relying on firmware to position when changing).
 // The offset has to be X=0, Y=0 for the extruder 0 hotend (default extruder).
 // For the other hotends it is their distance from the extruder 0 hotend.
@@ -162,7 +186,6 @@
 // 1 = ATX
 // 2 = X-Box 360 203Watts (the blue wire connected to PS_ON and the red wire to VCC)
 // :{1:'ATX',2:'X-Box 360'}
-
 #define POWER_SUPPLY 1
 
 // Define this to have the electronics keep the power supply off on startup. If you don't know what this is leave it.

Marlin/example_configurations/tvrrug/Round2/Configuration.h

@@ -152,6 +152,30 @@
 // For Cyclops or any "multi-extruder" that shares a single nozzle.
 //#define SINGLENOZZLE
 
+// A dual extruder that uses a single stepper motor
+// Don't forget to set SSDE_SERVO_ANGLES and HOTEND_OFFSET_X/Y/Z
+//#define SWITCHING_EXTRUDER
+#if ENABLED(SWITCHING_EXTRUDER)
+  #define SWITCHING_EXTRUDER_SERVO_NR 0
+  #define SWITCHING_EXTRUDER_SERVO_ANGLES { 0, 90 } // Angles for E0, E1
+  //#define HOTEND_OFFSET_Z {0.0, 0.0}
+#endif
+
+/**
+ * "Mixing Extruder"
+ *   - Adds a new code, M165, to set the current mix factors.
+ *   - Extends the stepping routines to move multiple steppers in proportion to the mix.
+ *   - Optional support for Repetier Host M163, M164, and virtual extruder.
+ *   - This implementation supports only a single extruder.
+ *   - Enable DIRECT_MIXING_IN_G1 for Pia Taubert's reference implementation
+ */
+//#define MIXING_EXTRUDER
+#if ENABLED(MIXING_EXTRUDER)
+  #define MIXING_STEPPERS 2        // Number of steppers in your mixing extruder
+  #define MIXING_VIRTUAL_TOOLS 16  // Use the Virtual Tool method with M163 and M164
+  //#define DIRECT_MIXING_IN_G1    // Allow ABCDHI mix factors in G1 movement commands
+#endif
+
 // Offset of the extruders (uncomment if using more than one and relying on firmware to position when changing).
 // The offset has to be X=0, Y=0 for the extruder 0 hotend (default extruder).
 // For the other hotends it is their distance from the extruder 0 hotend.
@@ -162,7 +186,6 @@
 // 1 = ATX
 // 2 = X-Box 360 203Watts (the blue wire connected to PS_ON and the red wire to VCC)
 // :{1:'ATX',2:'X-Box 360'}
-
 #define POWER_SUPPLY 1
 
 // Define this to have the electronics keep the power supply off on startup. If you don't know what this is leave it.