Enabled auto bed leveling

Enabled auto bed leveling and set correct axis step per unit

Marlin/Configuration.h

@@ -344,7 +344,7 @@ const bool Z_MAX_ENDSTOP_INVERTING = false; // set to true to invert the logic o
 #define Z_MAX_LENGTH (Z_MAX_POS - Z_MIN_POS)
 //============================= Bed Auto Leveling ===========================
 
-//#define ENABLE_AUTO_BED_LEVELING // Delete the comment to enable (remove // at the start of the line)
+#define ENABLE_AUTO_BED_LEVELING // Delete the comment to enable (remove // at the start of the line)
 #define Z_PROBE_REPEATABILITY_TEST  // If not commented out, Z-Probe Repeatability test will be included if Auto Bed Leveling is Enabled.
 
 #ifdef ENABLE_AUTO_BED_LEVELING
@@ -376,7 +376,7 @@ const bool Z_MAX_ENDSTOP_INVERTING = false; // set to true to invert the logic o
 
      // set the number of grid points per dimension
      // I wouldn't see a reason to go above 3 (=9 probing points on the bed)
-    #define AUTO_BED_LEVELING_GRID_POINTS 5
+    #define AUTO_BED_LEVELING_GRID_POINTS 3
 
 
   #else  // not AUTO_BED_LEVELING_GRID
@@ -480,7 +480,7 @@ const bool Z_MAX_ENDSTOP_INVERTING = false; // set to true to invert the logic o
 // default settings
 
 // TODO estrusore soltanto
-#define DEFAULT_AXIS_STEPS_PER_UNIT   {160,177.7778,8000,200}  // default steps per unit for Ultimaker
+#define DEFAULT_AXIS_STEPS_PER_UNIT   {80,88.8888889,8000,200}  // default steps per unit for Ultimaker
 #define DEFAULT_MAX_FEEDRATE          {500, 500, 300, 25}    // (mm/sec)
 #define DEFAULT_MAX_ACCELERATION      {9000,9000,100,10000}    // X, Y, Z, E maximum start speed for accelerated moves. E default values are good for Skeinforge 40+, for older versions raise them a lot.