Different ESTEPS per extruder for FlexyDually

Marlin/Configuration.h

@@ -515,7 +515,9 @@
  * following movement settings. If fewer factors are given than the
  * total number of extruders, the last value applies to the rest.
  */
-//#define DISTINCT_E_FACTORS
+#if defined(LULZBOT_DISTINCT_E_FACTORS)
+#define DISTINCT_E_FACTORS LULZBOT_DISTINCT_E_FACTORS
+#endif
 
 /**
  * Default Axis Steps Per Unit (steps/mm)

Marlin/Configuration_LulzBot.h

@@ -336,6 +336,9 @@
         // In the experimental Gladiola_GLCD, the encoder direction is reversed.
         #define LULZBOT_REVERSE_ENCODER_DIRECTION
     #endif
+    // Confusingly, Marlin shows three separate e-step settings: the active nozzle, nozzle1, nozzle2.
+    // We hide the first since it is redundant.
+    #define LULZBOT_HIDE_E_STEPS_FOR_ACTIVE_NOZZLE
 #endif
 
 /*********************************************** COMMON TOOLHEADS PARAMETERS *****************************/
@@ -471,6 +474,7 @@
     #undef  LULZBOT_WIPE_Y2
     #define LULZBOT_WIPE_Y2                    73
     #define LULZBOT_X_MAX_ENDSTOP_INVERTING    true
+    #define LULZBOT_DISTINCT_E_FACTORS
 #endif /* TOOLHEAD_Longfin_FlexyDually */
 
 
@@ -617,13 +621,11 @@
 #endif
 
 // default steps per unit for LulzBot TAZ.
-// LULZBOT_ESTEPS_PER_EXTRUDER is required for the tuning of FlexyDually
-// but currently is not implemented in Marlin 1.1.4.
 
-#if LULZBOT_EXTRUDERS == 1 || not defined(LULZBOT_ESTEPS_PER_EXTRUDER)
+#if defined(LULZBOT_DISTINCT_E_FACTORS) && LULZBOT_EXTRUDERS == 2
-    #define LULZBOT_DEFAULT_AXIS_STEPS_PER_UNIT   {LULZBOT_XY_STEPS,LULZBOT_XY_STEPS,LULZBOT_Z_STEPS,LULZBOT_E_STEPS}
-#elif LULZBOT_EXTRUDERS == 2
     #define LULZBOT_DEFAULT_AXIS_STEPS_PER_UNIT   {LULZBOT_XY_STEPS,LULZBOT_XY_STEPS,LULZBOT_Z_STEPS,LULZBOT_E_STEPS,LULZBOT_E_STEPS}
+#else
+    #define LULZBOT_DEFAULT_AXIS_STEPS_PER_UNIT   {LULZBOT_XY_STEPS,LULZBOT_XY_STEPS,LULZBOT_Z_STEPS,LULZBOT_E_STEPS}
 #endif
 
 // Gralco's customized Z Offset overlay (also requires dogm_bitmaps_Lulzbot.h)

Marlin/ultralcd.cpp

@@ -3248,7 +3248,9 @@ void kill_screen(const char* lcd_msg) {
     MENU_MULTIPLIER_ITEM_EDIT_CALLBACK(float62, MSG_ZSTEPS, &planner.axis_steps_per_mm[Z_AXIS], 5, 9999, _planner_refresh_positioning);
 
     #if ENABLED(DISTINCT_E_FACTORS)
+      #if not defined(LULZBOT_HIDE_E_STEPS_FOR_ACTIVE_NOZZLE)
       MENU_MULTIPLIER_ITEM_EDIT_CALLBACK(float62, MSG_ESTEPS, &planner.axis_steps_per_mm[E_AXIS + active_extruder], 5, 9999, _planner_refresh_positioning);
+      #endif
       MENU_MULTIPLIER_ITEM_EDIT_CALLBACK(float62, MSG_E1STEPS, &planner.axis_steps_per_mm[E_AXIS], 5, 9999, _planner_refresh_e0_positioning);
       MENU_MULTIPLIER_ITEM_EDIT_CALLBACK(float62, MSG_E2STEPS, &planner.axis_steps_per_mm[E_AXIS + 1], 5, 9999, _planner_refresh_e1_positioning);
       #if E_STEPPERS > 2

README_LulzBot.md

@@ -15,5 +15,4 @@ To select what firmware to build, modify lines 6 and 7 of "Configuration_LulzBot
 # Known Issues:
 
 1. The Makefile does not work. Building must be done via the Arduino IDE (internal builds are being done with 1.8.3)
-2. There is no way to tune the FlexyDually properly right now, as Marlin 1.1.4 does not support separate ESTEPs per extruder.
+2. Printer needs to be power cycled to clear "clean nozzle" state.
-3. Printer needs to be power cycled to clear "clean nozzle" state.