Added new Marlin 1.1.8 features to Hibiscus.

- Homing now required before moving any axis.
- Software endstops now enabled to prevent crashing axes.
- Z motors now enabled at startup to hold Z axis.
- Controller fan now runs at 1/2 power at startup.
- Enabled LIN_ADVANCE with Z factor = 0 so that this can be set by a user.
- Disabled LED support on X MAX out of concern that a user may accidently short out their board.

Marlin/Conditionals_LulzBot.h

@@ -13,7 +13,7 @@
  * got disabled.
  */
 
-#define LULZBOT_FW_VERSION ".2" // Change this with each update
+#define LULZBOT_FW_VERSION ".3" // Change this with each update
 
 #if ( \
     !defined(LULZBOT_Gladiola_Mini) && \
@@ -117,6 +117,7 @@
     #define LULZBOT_USE_32_MICROSTEPS_ON_Z
     #define LULZBOT_UUID "e5502411-d46d-421d-ba3a-a20126d7930f"
     #define LULZBOT_MODERN_UI
+    #define LULZBOT_USE_EXPERIMENTAL_FEATURES
 #endif
 
 #if defined(LULZBOT_Quiver_TAZ7)
@@ -135,6 +136,7 @@
     #define LULZBOT_PRINTCOUNTER
     #define LULZBOT_UUID "a952577d-8722-483a-999d-acdc9e772b7b"
     #define LULZBOT_MODERN_UI
+    #define LULZBOT_USE_EXPERIMENTAL_FEATURES
 #endif
 
 /****************************** DEBUGGING OPTIONS *******************************/
@@ -205,7 +207,12 @@
 /************************* EXPERIMENTAL FEATURES ******************************/
 
 #if defined(LULZBOT_USE_EXPERIMENTAL_FEATURES)
-    #define LULZBOT_USE_STATUS_LED
+    //#define LULZBOT_USE_STATUS_LED
+
+    // Enable linear advance, but leave K at zero so
+    // it is not used unless the user requests it.
+    #define LULZBOT_LIN_ADVANCE
+    #define LULZBOT_LIN_ADVANCE_K 0
 #endif
 
 /******************** MOTHERBOARD AND PIN CONFIGURATION ***********************/
@@ -352,6 +359,10 @@
     #define LULZBOT_AFTER_Z_HOME_ACTION
 #endif
 
+#if !defined(LULZBOT_USE_MAX_ENDSTOPS)
+    #define LULZBOT_NO_MOTION_BEFORE_HOMING
+#endif
+
 /************************ STEPPER INACTIVITY TIMEOUT ****************************/
 
 #if !defined(LULZBOT_USE_MAX_ENDSTOPS)
@@ -360,8 +371,10 @@
 
 #if defined(LULZBOT_USE_Z_BELT)
     #define LULZBOT_DISABLE_INACTIVE_Z false
+    #define LULZBOT_ENABLE_Z_MOTOR_ON_STARTUP enable_Z();
 #else
     #define LULZBOT_DISABLE_INACTIVE_Z true
+    #define LULZBOT_ENABLE_Z_MOTOR_ON_STARTUP
 #endif
 
 /*********************** AUTOLEVELING / BED PROBE *******************************/
@@ -976,7 +989,8 @@
 #define LULZBOT_USE_CONTROLLER_FAN
 #if defined(LULZBOT_IS_MINI) && defined(LULZBOT_USE_EINSYRAMBO)
     // The TMC drivers need a bit more cooling.
-    #define LULZBOT_CONTROLLERFAN_SPEED         255
+    #define LULZBOT_CONTROLLERFAN_SPEED                    255
+    #define LULZBOT_CONTROLLERFAN_SPEED_WHEN_ONLY_Z_ACTIVE 120
 #elif defined(LULZBOT_IS_MINI)
     // The Mini fan runs rather loud at full speed.
     #define LULZBOT_CONTROLLERFAN_SPEED         120
@@ -1095,8 +1109,11 @@
 #define LULZBOT_ENDSTOPS_ALWAYS_ON_DEFAULT
 #define LULZBOT_ABORT_ON_ENDSTOP_HIT_FEATURE_ENABLED
 
-// Workaround for bug in Marlin 1.1.5 where motion is stopped a X or Y = 0
+// Workaround for bug in Marlin 1.1.5 where motion is stopped a X or Y = 0,
-#define LULZBOT_MIN_SOFTWARE_ENDSTOPS_DISABLED
+// On the Hibiscus, enable software endstops
+#if defined(LULZBOT_USE_Z_BELT)
+    #define LULZBOT_MIN_SOFTWARE_ENDSTOPS
+#endif
 
 // The RAMBO does not support interrupts on all pins
 // so leave the ENDSTOP_INTERRUPTS_FEATURE disabled

Marlin/Configuration.h

@@ -794,7 +794,9 @@
 
 // @section homing
 
-//#define NO_MOTION_BEFORE_HOMING  // Inhibit movement until all axes have been homed
+#if defined(LULZBOT_NO_MOTION_BEFORE_HOMING)
+#define NO_MOTION_BEFORE_HOMING LULZBOT_NO_MOTION_BEFORE_HOMING  // Inhibit movement until all axes have been homed
+#endif
 
 #define Z_HOMING_HEIGHT LULZBOT_Z_HOMING_HEIGHT  // (in mm) Minimal z height before homing (G28) for Z clearance above the bed, clamps, ...
                              // Be sure you have this distance over your Z_MAX_POS in case.
@@ -829,7 +831,9 @@
  */
 
 // Min software endstops curtail movement below minimum coordinate bounds
-//#define MIN_SOFTWARE_ENDSTOPS LULZBOT_MIN_SOFTWARE_ENDSTOPS_DISABLED
+#if defined(LULZBOT_MIN_SOFTWARE_ENDSTOPS)
+  #define MIN_SOFTWARE_ENDSTOPS LULZBOT_MIN_SOFTWARE_ENDSTOPS
+#endif
 #if ENABLED(MIN_SOFTWARE_ENDSTOPS)
   #define MIN_SOFTWARE_ENDSTOP_X
   #define MIN_SOFTWARE_ENDSTOP_Y

Marlin/Configuration_adv.h

@@ -688,10 +688,12 @@
  * K=0 means advance disabled.
  * See Marlin documentation for calibration instructions.
  */
-//#define LIN_ADVANCE
+#if defined(LULZBOT_LIN_ADVANCE)
+#define LIN_ADVANCE LULZBOT_LIN_ADVANCE
+#endif
 
 #if ENABLED(LIN_ADVANCE)
-  #define LIN_ADVANCE_K 75
+  #define LIN_ADVANCE_K LULZBOT_LIN_ADVANCE_K
 
   /**
    * Some Slicers produce Gcode with randomly jumping extrusion widths occasionally.

Marlin/Marlin_main.cpp

@@ -13751,6 +13751,11 @@ void prepare_move_to_destination() {
 
       // allows digital or PWM fan output to be used (see M42 handling)
       WRITE(CONTROLLER_FAN_PIN, speed);
+      #if defined(LULZBOT_CONTROLLERFAN_SPEED_WHEN_ONLY_Z_ACTIVE)
+      if(X_ENABLE_READ != X_ENABLE_ON && Y_ENABLE_READ != Y_ENABLE_ON)
+        analogWrite(CONTROLLER_FAN_PIN, speed ? LULZBOT_CONTROLLERFAN_SPEED_WHEN_ONLY_Z_ACTIVE : 0);
+      else
+      #endif
       analogWrite(CONTROLLER_FAN_PIN, speed);
     }
   }
@@ -14674,6 +14679,8 @@ void setup() {
     delay(1000);
     WRITE(LCD_PINS_RS, HIGH);
   #endif
+
+  LULZBOT_ENABLE_Z_MOTOR_ON_STARTUP
 }
 
 /**