Chameleon multi-extruder

Author: thinkyhead

Marlin/Configuration.h

@@ -253,6 +253,7 @@
  *   PRUSA_MMU2S          : Průša MMU2S (Requires MK3S extruder with motion sensor, EXTRUDERS = 5)
  *   EXTENDABLE_EMU_MMU2  : MMU with configurable number of filaments (ERCF, SMuFF or similar with Průša MMU2 compatible firmware)
  *   EXTENDABLE_EMU_MMU2S : MMUS with configurable number of filaments (ERCF, SMuFF or similar with Průša MMU2 compatible firmware)
+ *   CHAMELEON            : Chameleon with up to 4 switchable filaments
  *
  * Requires NOZZLE_PARK_FEATURE to park print head in case MMU unit fails.
  * See additional options in Configuration_adv.h.

Marlin/Configuration_adv.h

@@ -4265,7 +4265,25 @@
 
   //#define MMU2_DEBUG  // Write debug info to serial output
 
-#endif // HAS_PRUSA_MMU2
+#elif HAS_CHAMELEON
+  // Initial location of the button, minus 3mm for the axis (e.g., if the button is at X225 use X222 here
+  #define CHAMELEON_BUTTON_X  X_MAX_POS
+  #define CHAMELEON_HOLDING_X (CHAMELEON_BUTTON_X - 3)
+  #define CHAMELEON_TOOLCHANGE_Y Y_CENTER
+  #define CHAMELEON_RAMMING_SEQUENCE \
+    { -50, 2000 }, \
+    { -80,  600 }, \
+    {   1, 2000 }, \
+    { -50, 2000 }, \
+    { -80,  600 }, \
+    {   1, 2000 }, \
+    { -10, 2000 }, \
+    {   1, 2000 }, \
+    { -10, 2000 }, \
+    {   1, 2000 }, \
+    { -50, 2000 }, \
+    { -80,  100 }
+#endif
 
 /**
  * Advanced Print Counter settings

Marlin/src/core/macros.h

@@ -338,6 +338,18 @@
 #define GANG_N_1(N,K) _GANG_N(N,K,K,K,K,K,K,K,K,K,K,K,K,K,K,K,K)
 
 // Macros for initializing arrays
+#define LIST_32(A,B,C,D,E,F,G,H,I,J,K,L,M,N,O,P,Q,R,S,T,U,V,W,X,Y,Z,AA,BB,CC,DD,EE,FF,...) A,B,C,D,E,F,G,H,I,J,K,L,M,N,O,P,Q,R,S,T,U,V,W,X,Y,Z,AA,BB,CC,DD,EE,FF
+#define LIST_31(A,B,C,D,E,F,G,H,I,J,K,L,M,N,O,P,Q,R,S,T,U,V,W,X,Y,Z,AA,BB,CC,DD,EE,...) A,B,C,D,E,F,G,H,I,J,K,L,M,N,O,P,Q,R,S,T,U,V,W,X,Y,Z,AA,BB,CC,DD,EE
+#define LIST_30(A,B,C,D,E,F,G,H,I,J,K,L,M,N,O,P,Q,R,S,T,U,V,W,X,Y,Z,AA,BB,CC,DD,...) A,B,C,D,E,F,G,H,I,J,K,L,M,N,O,P,Q,R,S,T,U,V,W,X,Y,Z,AA,BB,CC,DD
+#define LIST_29(A,B,C,D,E,F,G,H,I,J,K,L,M,N,O,P,Q,R,S,T,U,V,W,X,Y,Z,AA,BB,CC,...) A,B,C,D,E,F,G,H,I,J,K,L,M,N,O,P,Q,R,S,T,U,V,W,X,Y,Z,AA,BB,CC
+#define LIST_28(A,B,C,D,E,F,G,H,I,J,K,L,M,N,O,P,Q,R,S,T,U,V,W,X,Y,Z,AA,BB,...) A,B,C,D,E,F,G,H,I,J,K,L,M,N,O,P,Q,R,S,TU,V,W,X,Y,Z,AA,BB
+#define LIST_27(A,B,C,D,E,F,G,H,I,J,K,L,M,N,O,P,Q,R,S,T,U,V,W,X,Y,Z,AA,...) A,B,C,D,E,F,G,H,I,J,K,L,M,N,O,P,Q,R,S,T,U,V,W,X,Y,Z,AA
+#define LIST_26(A,B,C,D,E,F,G,H,I,J,K,L,M,N,O,P,Q,R,S,T,U,V,W,X,Y,Z,...) A,B,C,D,E,F,G,H,I,J,K,L,M,N,O,P,Q,R,S,T,U,V,W,X,Y,Z
+#define LIST_25(A,B,C,D,E,F,G,H,I,J,K,L,M,N,O,P,Q,R,S,T,U,V,W,X,Y,...) A,B,C,D,E,F,G,H,I,J,K,L,M,N,O,P,Q,R,S,T,U,V,W,X,Y
+#define LIST_24(A,B,C,D,E,F,G,H,I,J,K,L,M,N,O,P,Q,R,S,T,U,V,W,X,...) A,B,C,D,E,F,G,H,I,J,K,L,M,N,O,P,Q,R,S,T,U,V,W,X
+#define LIST_23(A,B,C,D,E,F,G,H,I,J,K,L,M,N,O,P,Q,R,S,T,U,V,W,...) A,B,C,D,E,F,G,H,I,J,K,L,M,N,O,P,Q,R,S,T,U,V,W
+#define LIST_22(A,B,C,D,E,F,G,H,I,J,K,L,M,N,O,P,Q,R,S,T,U,V,...) A,B,C,D,E,F,G,H,I,J,K,L,M,N,O,P,Q,R,S,T,U,V
+#define LIST_21(A,B,C,D,E,F,G,H,I,J,K,L,M,N,O,P,Q,R,S,T,U,...) A,B,C,D,E,F,G,H,I,J,K,L,M,N,O,P,Q,R,S,T,U
 #define LIST_20(A,B,C,D,E,F,G,H,I,J,K,L,M,N,O,P,Q,R,S,T,...) A,B,C,D,E,F,G,H,I,J,K,L,M,N,O,P,Q,R,S,T
 #define LIST_19(A,B,C,D,E,F,G,H,I,J,K,L,M,N,O,P,Q,R,S,...) A,B,C,D,E,F,G,H,I,J,K,L,M,N,O,P,Q,R,S
 #define LIST_18(A,B,C,D,E,F,G,H,I,J,K,L,M,N,O,P,Q,R,...) A,B,C,D,E,F,G,H,I,J,K,L,M,N,O,P,Q,R
@@ -563,6 +575,17 @@
 #define INC_18 19
 #define INC_19 20
 #define INC_20 21
+#define INC_21 22
+#define INC_22 23
+#define INC_23 24
+#define INC_24 25
+#define INC_25 26
+#define INC_26 27
+#define INC_27 28
+#define INC_28 29
+#define INC_29 30
+#define INC_30 31
+#define INC_31 32
 #define INCREMENT_(n) INC_##n
 #define INCREMENT(n) INCREMENT_(n)
 
@@ -598,6 +621,23 @@
 #define DEC_13 12
 #define DEC_14 13
 #define DEC_15 14
+#define DEC_16 15
+#define DEC_17 16
+#define DEC_18 17
+#define DEC_19 18
+#define DEC_20 19
+#define DEC_21 20
+#define DEC_22 21
+#define DEC_23 22
+#define DEC_24 23
+#define DEC_25 24
+#define DEC_26 25
+#define DEC_27 26
+#define DEC_28 27
+#define DEC_29 28
+#define DEC_30 29
+#define DEC_31 30
+#define DEC_32 31
 #define DECREMENT_(n) DEC_##n
 #define DECREMENT(n) DECREMENT_(n)
 

Marlin/src/feature/mmu/chameleon.cpp

@@ -0,0 +1,76 @@
+/**
+ * Marlin 3D Printer Firmware
+ * Copyright (c) 2022 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
+ *
+ * Based on Sprinter and grbl.
+ * Copyright (c) 2011 Camiel Gubbels / Erik van der Zalm
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ *
+ */
+
+#include "../../inc/MarlinConfig.h"
+
+#if HAS_CHAMELEON
+
+#include "chameleon.h"
+//#include "../../MarlinCore.h"
+#include "../../module/planner.h"
+#include "../../module/stepper.h"
+#include "../../lcd/marlinui.h"
+
+//#define DEBUG_OUT ENABLED(DEBUG_CHAMELEON)
+#include "../../core/debug_out.h"
+
+Chameleon chameleon;
+
+struct E_Step {
+  float extrude;
+  feedRate_t feedRate;
+};
+
+void Chameleon::tool_change(const uint8_t index) {
+  if (index == active_extruder) return;
+
+  ui.status_printf(0, GET_TEXT_F(MSG_MMU2_LOADING_FILAMENT), int(index + 1));
+
+  static constexpr E_Step ramming_sequence[] PROGMEM = { CHAMELEON_RAMMING_SEQUENCE };
+  execute_extruder_sequence(ramming_sequence, COUNT(ramming_sequence));
+
+  ui.reset_status();
+}
+
+void Chameleon::execute_extruder_sequence(const E_Step * const sequence, const uint8_t steps) {
+  planner.synchronize();
+  stepper.enable_extruder();
+
+  const E_Step *step = sequence;
+
+  LOOP_L_N(i, steps) {
+    const float es = pgm_read_float(&(step->extrude));
+    const feedRate_t fr_mm_m = pgm_read_float(&(step->feedRate));
+
+    DEBUG_ECHO_MSG("E step ", es, "/", fr_mm_m);
+
+    current_position.e += es;
+    line_to_current_position(MMM_TO_MMS(fr_mm_m));
+    planner.synchronize();
+
+    step++;
+  }
+
+  stepper.disable_extruder();
+}
+
+#endif // HAS_CHAMELEON

Marlin/src/feature/mmu/chameleon.h

@@ -0,0 +1,38 @@
+/**
+ * Marlin 3D Printer Firmware
+ * Copyright (c) 2022 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
+ *
+ * Based on Sprinter and grbl.
+ * Copyright (c) 2011 Camiel Gubbels / Erik van der Zalm
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ *
+ */
+#pragma once
+
+#include <stdint.h>
+
+struct E_Step;
+
+class Chameleon {
+  public:
+    Chameleon() {}
+    static void tool_change(const uint8_t new_tool);
+
+  private:
+    static void execute_extruder_sequence(const E_Step * const sequence, const uint8_t steps);
+    static void push_button();
+};
+
+extern Chameleon chameleon;

Marlin/src/inc/Conditionals_LCD.h

@@ -548,6 +548,7 @@
 #define PRUSA_MMU1             1
 #define PRUSA_MMU2             2
 #define PRUSA_MMU2S            3
+#define CHAMELEON              4
 #define EXTENDABLE_EMU_MMU2   12
 #define EXTENDABLE_EMU_MMU2S  13
 
@@ -560,6 +561,8 @@
   #elif MMU_MODEL % 10 == PRUSA_MMU2S
     #define HAS_PRUSA_MMU2 1
     #define HAS_PRUSA_MMU2S 1
+  #elif MMU_MODEL == CHAMELEON
+    #define HAS_CHAMELEON 1
   #endif
   #if MMU_MODEL >= EXTENDABLE_EMU_MMU2
     #define HAS_EXTENDABLE_MMU 1
@@ -569,6 +572,7 @@
 #undef PRUSA_MMU1
 #undef PRUSA_MMU2
 #undef PRUSA_MMU2S
+#undef CHAMELEON
 #undef EXTENDABLE_EMU_MMU2
 #undef EXTENDABLE_EMU_MMU2S
 
@@ -635,7 +639,7 @@
   #define E_STEPPERS      EXTRUDERS
   #define E_MANUAL        EXTRUDERS
 
-#elif HAS_PRUSA_MMU2                // Průša Multi-Material Unit v2
+#elif HAS_PRUSA_MMU2 || HAS_CHAMELEON // Multi-Material Unit
 
   #define E_STEPPERS      1
   #define E_MANUAL        1
@@ -647,7 +651,7 @@
   #undef DISABLE_INACTIVE_EXTRUDER
 #endif
 
-// Průša MMU1, MMU(S) 2.0 and EXTENDABLE_EMU_MMU2(S) force SINGLENOZZLE
+// Chameleon, Průša MMU1, MMU(S) 2.0, and EXTENDABLE_EMU_MMU2(S) force SINGLENOZZLE
 #if HAS_MMU
   #define SINGLENOZZLE
 #endif

Marlin/src/inc/SanityCheck.h

@@ -1159,12 +1159,21 @@ static_assert(Y_MAX_LENGTH >= Y_BED_SIZE, "Movement bounds (Y_MIN_POS, Y_MAX_POS
   #endif
 #endif
 
+#if HAS_CHAMELEON
+  #if EXTRUDERS > 32
+    #undef SINGLENOZZLE
+    #error "CHAMELEON only supports up to 32 EXTRUDERS. Please update your Configuration."
+  #endif
+#endif
+
 /**
  * Options only for EXTRUDERS > 1
  */
 #if HAS_MULTI_EXTRUDER
 
-  #if HAS_EXTENDABLE_MMU
+  #if HAS_CHAMELEON
+    #define MAX_EXTRUDERS 32
+  #elif HAS_EXTENDABLE_MMU
     #define MAX_EXTRUDERS 15
   #else
     #define MAX_EXTRUDERS  8
@@ -2427,6 +2436,24 @@ static_assert(Y_MAX_LENGTH >= Y_BED_SIZE, "Movement bounds (Y_MIN_POS, Y_MAX_POS
   #endif // HOTENDS > 2
 #endif // HAS_MULTI_HOTEND
 
+#if HOTENDS < 8 && TEMP_SENSOR_7 != 0
+  #error "TEMP_SENSOR_7 shouldn't be set with less than 8 hotends."
+#elif HOTENDS < 7 && TEMP_SENSOR_6 != 0
+  #error "TEMP_SENSOR_6 shouldn't be set with less than 7 hotends."
+#elif HOTENDS < 6 && TEMP_SENSOR_5 != 0
+  #error "TEMP_SENSOR_5 shouldn't be set with less than 6 hotends."
+#elif HOTENDS < 5 && TEMP_SENSOR_4 != 0
+  #error "TEMP_SENSOR_4 shouldn't be set with less than 5 hotends."
+#elif HOTENDS < 4 && TEMP_SENSOR_3 != 0
+  #error "TEMP_SENSOR_3 shouldn't be set with less than 4 hotends."
+#elif HOTENDS < 3 && TEMP_SENSOR_2 != 0
+  #error "TEMP_SENSOR_2 shouldn't be set with less than 3 hotends."
+#elif HOTENDS < 2 && TEMP_SENSOR_1 != 0
+  #error "TEMP_SENSOR_1 shouldn't be set with less than 2 hotends."
+#elif HOTENDS < 1 && TEMP_SENSOR_0 != 0
+  #error "TEMP_SENSOR_0 shouldn't be set with no hotends."
+#endif
+
 /**
  * Pins must be set for temp sensors, with some other feature requirements.
  */

Marlin/src/module/stepper/indirection.h

@@ -544,6 +544,12 @@ void reset_stepper_drivers();    // Called by settings.load / settings.reset
   #define   NORM_E_DIR(E)   do{ E0_DIR_WRITE(TEST(E, 0) ? DISABLED(INVERT_E0_DIR):  ENABLED(INVERT_E0_DIR)); }while(0)
   #define    REV_E_DIR(E)   do{ E0_DIR_WRITE(TEST(E, 0) ?  ENABLED(INVERT_E0_DIR): DISABLED(INVERT_E0_DIR)); }while(0)
 
+#elif ENABLED(CHAMELEON)  // One multiplexed stepper driver, reversed on T2/T3, T6/T7, T10/T11, etc.
+
+  #define E_STEP_WRITE(E,V) E0_STEP_WRITE(V)
+  #define   NORM_E_DIR(E)   do{ E0_DIR_WRITE(TEST(E, 1) ? !INVERT_E0_DIR:  INVERT_E0_DIR); }while(0)
+  #define    REV_E_DIR(E)   do{ E0_DIR_WRITE(TEST(E, 1) ?  INVERT_E0_DIR: !INVERT_E0_DIR); }while(0)
+
 #elif E_STEPPERS > 1
 
   #if E_STEPPERS > 7

Marlin/src/module/tool_change.cpp

@@ -87,6 +87,8 @@
   #include "../feature/mmu/mmu.h"
 #elif HAS_PRUSA_MMU2
   #include "../feature/mmu/mmu2.h"
+#elif HAS_CHAMELEON
+  #include "../feature/mmu/chameleon.h"
 #endif
 
 #if HAS_MARLINUI_MENU
@@ -1111,6 +1113,12 @@ void tool_change(const uint8_t new_tool, bool no_move/*=false*/) {
       mixer.T(new_tool);
     #endif
 
+  #elif HAS_CHAMELEON
+
+    UNUSED(no_move);
+
+    chameleon.tool_change(new_tool);
+
   #elif HAS_PRUSA_MMU2
 
     UNUSED(no_move);

buildroot/tests/mega2560

@@ -39,20 +39,19 @@ exec_test $1 $2 "Azteeg X3 Pro | EXTRUDERS 5 | RRDFGSC | UBL | LIN_ADVANCE ..."
 # Add a Sled Z Probe, use UBL Cartesian moves, use Japanese language
 #
 use_example_configs AnimationExample
-opt_set MOTHERBOARD BOARD_AZTEEG_X3_PRO LCD_LANGUAGE jp_kana DEFAULT_EJERK 10 \
-        EXTRUDERS 5 TEMP_SENSOR_1 1 TEMP_SENSOR_2 5 TEMP_SENSOR_3 20 TEMP_SENSOR_4 1000 TEMP_SENSOR_BED 1
+opt_set MOTHERBOARD BOARD_AZTEEG_X3_PRO \
+        EXTRUDERS 8 TEMP_SENSOR_BED 1 MMU_MODEL CHAMELEON DEFAULT_EJERK 10 LCD_LANGUAGE jp_kana
 opt_enable REPRAP_DISCOUNT_FULL_GRAPHIC_SMART_CONTROLLER LIGHTWEIGHT_UI SHOW_CUSTOM_BOOTSCREEN BOOT_MARLIN_LOGO_SMALL \
            LCD_SET_PROGRESS_MANUALLY PRINT_PROGRESS_SHOW_DECIMALS SHOW_REMAINING_TIME STATUS_MESSAGE_SCROLLING SCROLL_LONG_FILENAMES \
            SDSUPPORT LONG_FILENAME_WRITE_SUPPORT SDCARD_SORT_ALPHA NO_SD_AUTOSTART USB_FLASH_DRIVE_SUPPORT CANCEL_OBJECTS \
            Z_PROBE_SLED AUTO_BED_LEVELING_UBL UBL_HILBERT_CURVE RESTORE_LEVELING_AFTER_G28 DEBUG_LEVELING_FEATURE G26_MESH_VALIDATION ENABLE_LEVELING_FADE_HEIGHT \
            EEPROM_SETTINGS EEPROM_CHITCHAT GCODE_MACROS CUSTOM_MENU_MAIN \
-           MULTI_NOZZLE_DUPLICATION CLASSIC_JERK LIN_ADVANCE QUICK_HOME \
+           NOZZLE_PARK_FEATURE ADVANCED_PAUSE_FEATURE CLASSIC_JERK LIN_ADVANCE QUICK_HOME \
            NANODLP_Z_SYNC I2C_POSITION_ENCODERS M114_DETAIL \
            SKEW_CORRECTION SKEW_CORRECTION_FOR_Z SKEW_CORRECTION_GCODE \
-           BABYSTEPPING BABYSTEP_XY BABYSTEP_ZPROBE_OFFSET DOUBLECLICK_FOR_Z_BABYSTEPPING BABYSTEP_HOTEND_Z_OFFSET BABYSTEP_DISPLAY_TOTAL
+           BABYSTEPPING BABYSTEP_XY BABYSTEP_ZPROBE_OFFSET DOUBLECLICK_FOR_Z_BABYSTEPPING BABYSTEP_DISPLAY_TOTAL
 opt_disable SEGMENT_LEVELED_MOVES
-exec_test $1 $2 "Azteeg X3 Pro | EXTRUDERS 5 | RRDFGSC | UBL | LIN_ADVANCE | Sled Probe | Skew | JP-Kana | Babystep offsets ..." "$3"
-
+exec_test $1 $2 "Azteeg X3 Pro | Chameleon (x8) | RRDFGSC | UBL | LIN_ADVANCE | Sled Probe | Skew | JP-Kana | Babystep offsets ..." "$3"
 
 #
 # 5 runout sensors with distinct states