diff --git a/Marlin/Configuration.h b/Marlin/Configuration.h
index afcd9134c..8c12b0f85 100644
--- a/Marlin/Configuration.h
+++ b/Marlin/Configuration.h
@@ -118,7 +118,10 @@ Here are some standard links for getting your machine calibrated:
 // 1010 is Pt1000 with 1k pullup (non standard)
 // 147 is Pt100 with 4k7 pullup
 // 110 is Pt100 with 1k pullup (non standard)
-// 999 is a Dummy Table. It will ALWAYS read 25C.. Use it for Testing or Development purposes. NEVER for production machine.
+// 998 and 999 are Dummy Tables. They will ALWAYS read 25°C or the temperature defined below. 
+//     Use it for Testing or Development purposes. NEVER for production machine.
+//     #define DUMMY_THERMISTOR_998_VALUE 25
+//     #define DUMMY_THERMISTOR_999_VALUE 100
 
 #define TEMP_SENSOR_0 -1
 #define TEMP_SENSOR_1 -1
@@ -582,6 +585,10 @@ const bool Z_MAX_ENDSTOP_INVERTING = true; // set to true to invert the logic of
 //#define LCD_FEEDBACK_FREQUENCY_HZ 1000	// this is the tone frequency the buzzer plays when on UI feedback. ie Screen Click
 //#define LCD_FEEDBACK_FREQUENCY_DURATION_MS 100 // the duration the buzzer plays the UI feedback sound. ie Screen Click
 
+// PanelOne from T3P3 (via RAMPS 1.4 AUX2/AUX3)
+// http://reprap.org/wiki/PanelOne
+//#define PANEL_ONE
+
 // The MaKr3d Makr-Panel with graphic controller and SD support
 // http://reprap.org/wiki/MaKr3d_MaKrPanel
 //#define MAKRPANEL
@@ -640,6 +647,10 @@ const bool Z_MAX_ENDSTOP_INVERTING = true; // set to true to invert the logic of
  #define ENCODER_STEPS_PER_MENU_ITEM 1
 #endif
 
+#if defined (PANEL_ONE)
+ #define SDSUPPORT
+ #define ULTIMAKERCONTROLLER
+#endif
 
 #if defined (REPRAP_DISCOUNT_FULL_GRAPHIC_SMART_CONTROLLER)
  #define DOGLCD
diff --git a/Marlin/Marlin_main.cpp b/Marlin/Marlin_main.cpp
index 61e966faf..f986ee68a 100644
--- a/Marlin/Marlin_main.cpp
+++ b/Marlin/Marlin_main.cpp
@@ -1720,6 +1720,7 @@ void process_commands()
 
 #ifdef ENABLE_AUTO_BED_LEVELING
     case 29: // G29 Detailed Z-Probe, probes the bed at 3 or more points.
+    	     // Override probing area by providing [F]ront [B]ack [L]eft [R]ight Grid[P]oints values
         {
             #if Z_MIN_PIN == -1
             #error "You must have a Z_MIN endstop in order to enable Auto Bed Leveling feature!!! Z_MIN_PIN must point to a valid hardware pin."
@@ -1733,6 +1734,16 @@ void process_commands()
                 SERIAL_ECHOLNPGM(MSG_POSITION_UNKNOWN);
                 break; // abort G29, since we don't know where we are
             }
+            int left_probe_bed_position=LEFT_PROBE_BED_POSITION;
+            int right_probe_bed_position=RIGHT_PROBE_BED_POSITION;
+            int back_probe_bed_position=BACK_PROBE_BED_POSITION;
+            int front_probe_bed_position=FRONT_PROBE_BED_POSITION;
+            int auto_bed_leveling_grid_points=AUTO_BED_LEVELING_GRID_POINTS;
+            if (code_seen('L')) left_probe_bed_position=(int)code_value();
+            if (code_seen('R')) right_probe_bed_position=(int)code_value();
+            if (code_seen('B')) back_probe_bed_position=(int)code_value();
+            if (code_seen('F')) front_probe_bed_position=(int)code_value();
+            if (code_seen('P')) auto_bed_leveling_grid_points=(int)code_value();
 
 #ifdef Z_PROBE_SLED
             dock_sled(false);
@@ -1754,8 +1765,8 @@ void process_commands()
 #ifdef AUTO_BED_LEVELING_GRID
             // probe at the points of a lattice grid
 
-            int xGridSpacing = (RIGHT_PROBE_BED_POSITION - LEFT_PROBE_BED_POSITION) / (AUTO_BED_LEVELING_GRID_POINTS-1);
-            int yGridSpacing = (BACK_PROBE_BED_POSITION - FRONT_PROBE_BED_POSITION) / (AUTO_BED_LEVELING_GRID_POINTS-1);
+            int xGridSpacing = (right_probe_bed_position - left_probe_bed_position) / (auto_bed_leveling_grid_points-1);
+            int yGridSpacing = (back_probe_bed_position - front_probe_bed_position) / (auto_bed_leveling_grid_points-1);
 
 
             // solve the plane equation ax + by + d = z
@@ -1765,32 +1776,35 @@ void process_commands()
             // so Vx = -a Vy = -b Vz = 1 (we want the vector facing towards positive Z
 
             // "A" matrix of the linear system of equations
-            double eqnAMatrix[AUTO_BED_LEVELING_GRID_POINTS*AUTO_BED_LEVELING_GRID_POINTS*3];
+            double eqnAMatrix[auto_bed_leveling_grid_points*auto_bed_leveling_grid_points*3];
+
             // "B" vector of Z points
-            double eqnBVector[AUTO_BED_LEVELING_GRID_POINTS*AUTO_BED_LEVELING_GRID_POINTS];
+            double eqnBVector[auto_bed_leveling_grid_points*auto_bed_leveling_grid_points];
+
 
 
             int probePointCounter = 0;
             bool zig = true;
 
-            for (int yProbe=FRONT_PROBE_BED_POSITION; yProbe <= BACK_PROBE_BED_POSITION; yProbe += yGridSpacing)
+            for (int yProbe=front_probe_bed_position; yProbe <= back_probe_bed_position; yProbe += yGridSpacing)
+
             {
               int xProbe, xInc;
               if (zig)
               {
-                xProbe = LEFT_PROBE_BED_POSITION;
-                //xEnd = RIGHT_PROBE_BED_POSITION;
+                xProbe = left_probe_bed_position;
+                //xEnd = right_probe_bed_position;
                 xInc = xGridSpacing;
                 zig = false;
               } else // zag
               {
-                xProbe = RIGHT_PROBE_BED_POSITION;
-                //xEnd = LEFT_PROBE_BED_POSITION;
+                xProbe = right_probe_bed_position;
+                //xEnd = left_probe_bed_position;
                 xInc = -xGridSpacing;
                 zig = true;
               }
 
-              for (int xCount=0; xCount < AUTO_BED_LEVELING_GRID_POINTS; xCount++)
+              for (int xCount=0; xCount < auto_bed_leveling_grid_points; xCount++)
               {
                 float z_before;
                 if (probePointCounter == 0)
@@ -1822,9 +1836,9 @@ void process_commands()
 
                 eqnBVector[probePointCounter] = measured_z;
 
-                eqnAMatrix[probePointCounter + 0*AUTO_BED_LEVELING_GRID_POINTS*AUTO_BED_LEVELING_GRID_POINTS] = xProbe;
-                eqnAMatrix[probePointCounter + 1*AUTO_BED_LEVELING_GRID_POINTS*AUTO_BED_LEVELING_GRID_POINTS] = yProbe;
-                eqnAMatrix[probePointCounter + 2*AUTO_BED_LEVELING_GRID_POINTS*AUTO_BED_LEVELING_GRID_POINTS] = 1;
+                eqnAMatrix[probePointCounter + 0*auto_bed_leveling_grid_points*auto_bed_leveling_grid_points] = xProbe;
+                eqnAMatrix[probePointCounter + 1*auto_bed_leveling_grid_points*auto_bed_leveling_grid_points] = yProbe;
+                eqnAMatrix[probePointCounter + 2*auto_bed_leveling_grid_points*auto_bed_leveling_grid_points] = 1;
                 probePointCounter++;
                 xProbe += xInc;
               }
@@ -1832,7 +1846,7 @@ void process_commands()
             clean_up_after_endstop_move();
 
             // solve lsq problem
-            double *plane_equation_coefficients = qr_solve(AUTO_BED_LEVELING_GRID_POINTS*AUTO_BED_LEVELING_GRID_POINTS, 3, eqnAMatrix, eqnBVector);
+            double *plane_equation_coefficients = qr_solve(auto_bed_leveling_grid_points*auto_bed_leveling_grid_points, 3, eqnAMatrix, eqnBVector);
 
             SERIAL_PROTOCOLPGM("Eqn coefficients: a: ");
             SERIAL_PROTOCOL(plane_equation_coefficients[0]);
diff --git a/Marlin/example_configurations/Hephestos/Configuration.h b/Marlin/example_configurations/Hephestos/Configuration.h
index 93a0f1809..c1bb413aa 100644
--- a/Marlin/example_configurations/Hephestos/Configuration.h
+++ b/Marlin/example_configurations/Hephestos/Configuration.h
@@ -587,6 +587,10 @@ const bool Z_MAX_ENDSTOP_INVERTING = true; // set to true to invert the logic of
 //#define LCD_FEEDBACK_FREQUENCY_HZ 1000	// this is the tone frequency the buzzer plays when on UI feedback. ie Screen Click
 //#define LCD_FEEDBACK_FREQUENCY_DURATION_MS 100 // the duration the buzzer plays the UI feedback sound. ie Screen Click
 
+// PanelOne from T3P3 (via RAMPS 1.4 AUX2/AUX3)
+// http://reprap.org/wiki/PanelOne
+//#define PANEL_ONE
+
 // The MaKr3d Makr-Panel with graphic controller and SD support
 // http://reprap.org/wiki/MaKr3d_MaKrPanel
 //#define MAKRPANEL
@@ -645,6 +649,10 @@ const bool Z_MAX_ENDSTOP_INVERTING = true; // set to true to invert the logic of
  #define ENCODER_STEPS_PER_MENU_ITEM 1
 #endif
 
+#if defined (PANEL_ONE)
+ #define SDSUPPORT
+ #define ULTIMAKERCONTROLLER
+#endif
 
 #if defined (REPRAP_DISCOUNT_FULL_GRAPHIC_SMART_CONTROLLER)
  #define DOGLCD
diff --git a/Marlin/example_configurations/K8200/Configuration.h b/Marlin/example_configurations/K8200/Configuration.h
index e17ee9e33..b56e05301 100644
--- a/Marlin/example_configurations/K8200/Configuration.h
+++ b/Marlin/example_configurations/K8200/Configuration.h
@@ -597,6 +597,10 @@ const bool Z_MAX_ENDSTOP_INVERTING = true; // set to true to invert the logic of
 //#define LCD_FEEDBACK_FREQUENCY_HZ 1000	// this is the tone frequency the buzzer plays when on UI feedback. ie Screen Click
 //#define LCD_FEEDBACK_FREQUENCY_DURATION_MS 100 // the duration the buzzer plays the UI feedback sound. ie Screen Click
 
+// PanelOne from T3P3 (via RAMPS 1.4 AUX2/AUX3)
+// http://reprap.org/wiki/PanelOne
+//#define PANEL_ONE
+
 // The MaKr3d Makr-Panel with graphic controller and SD support
 // http://reprap.org/wiki/MaKr3d_MaKrPanel
 //#define MAKRPANEL
@@ -655,6 +659,10 @@ const bool Z_MAX_ENDSTOP_INVERTING = true; // set to true to invert the logic of
  #define ENCODER_STEPS_PER_MENU_ITEM 1
 #endif
 
+#if defined (PANEL_ONE)
+ #define SDSUPPORT
+ #define ULTIMAKERCONTROLLER
+#endif
 
 #if defined (REPRAP_DISCOUNT_FULL_GRAPHIC_SMART_CONTROLLER)
  #define DOGLCD
diff --git a/Marlin/example_configurations/SCARA/Configuration.h b/Marlin/example_configurations/SCARA/Configuration.h
index 43a94f705..45584c162 100644
--- a/Marlin/example_configurations/SCARA/Configuration.h
+++ b/Marlin/example_configurations/SCARA/Configuration.h
@@ -590,6 +590,10 @@ const bool Z_MAX_ENDSTOP_INVERTING = true; // set to true to invert the logic of
 //#define LCD_FEEDBACK_FREQUENCY_HZ 1000	// this is the tone frequency the buzzer plays when on UI feedback. ie Screen Click
 //#define LCD_FEEDBACK_FREQUENCY_DURATION_MS 100 // the duration the buzzer plays the UI feedback sound. ie Screen Click
 
+// PanelOne from T3P3 (via RAMPS 1.4 AUX2/AUX3)
+// http://reprap.org/wiki/PanelOne
+//#define PANEL_ONE
+
 // The MaKr3d Makr-Panel with graphic controller and SD support
 // http://reprap.org/wiki/MaKr3d_MaKrPanel
 //#define MAKRPANEL
@@ -648,6 +652,10 @@ const bool Z_MAX_ENDSTOP_INVERTING = true; // set to true to invert the logic of
  #define ENCODER_STEPS_PER_MENU_ITEM 1
 #endif
 
+#if defined (PANEL_ONE)
+ #define SDSUPPORT
+ #define ULTIMAKERCONTROLLER
+#endif
 
 #if defined (REPRAP_DISCOUNT_FULL_GRAPHIC_SMART_CONTROLLER)
  #define DOGLCD
diff --git a/Marlin/example_configurations/WITBOX/Configuration.h b/Marlin/example_configurations/WITBOX/Configuration.h
index 02aa94b2d..e240abfed 100644
--- a/Marlin/example_configurations/WITBOX/Configuration.h
+++ b/Marlin/example_configurations/WITBOX/Configuration.h
@@ -591,6 +591,10 @@ const bool Z_MAX_ENDSTOP_INVERTING = true; // set to true to invert the logic of
 //#define LCD_FEEDBACK_FREQUENCY_HZ 1000	// this is the tone frequency the buzzer plays when on UI feedback. ie Screen Click
 //#define LCD_FEEDBACK_FREQUENCY_DURATION_MS 100 // the duration the buzzer plays the UI feedback sound. ie Screen Click
 
+// PanelOne from T3P3 (via RAMPS 1.4 AUX2/AUX3)
+// http://reprap.org/wiki/PanelOne
+//#define PANEL_ONE
+
 // The MaKr3d Makr-Panel with graphic controller and SD support
 // http://reprap.org/wiki/MaKr3d_MaKrPanel
 //#define MAKRPANEL
@@ -649,6 +653,10 @@ const bool Z_MAX_ENDSTOP_INVERTING = true; // set to true to invert the logic of
  #define ENCODER_STEPS_PER_MENU_ITEM 1
 #endif
 
+#if defined (PANEL_ONE)
+ #define SDSUPPORT
+ #define ULTIMAKERCONTROLLER
+#endif
 
 #if defined (REPRAP_DISCOUNT_FULL_GRAPHIC_SMART_CONTROLLER)
  #define DOGLCD
diff --git a/Marlin/example_configurations/delta/Configuration.h b/Marlin/example_configurations/delta/Configuration.h
index ba5f6590a..e880f8a2d 100644
--- a/Marlin/example_configurations/delta/Configuration.h
+++ b/Marlin/example_configurations/delta/Configuration.h
@@ -495,6 +495,10 @@ const bool Z_MAX_ENDSTOP_INVERTING = true; // set to true to invert the logic of
 //#define LCD_FEEDBACK_FREQUENCY_HZ 1000	// this is the tone frequency the buzzer plays when on UI feedback. ie Screen Click
 //#define LCD_FEEDBACK_FREQUENCY_DURATION_MS 100 // the duration the buzzer plays the UI feedback sound. ie Screen Click
 
+// PanelOne from T3P3 (via RAMPS 1.4 AUX2/AUX3)
+// http://reprap.org/wiki/PanelOne
+//#define PANEL_ONE
+
 // The MaKr3d Makr-Panel with graphic controller and SD support
 // http://reprap.org/wiki/MaKr3d_MaKrPanel
 //#define MAKRPANEL
@@ -560,6 +564,10 @@ const bool Z_MAX_ENDSTOP_INVERTING = true; // set to true to invert the logic of
  #define ENCODER_STEPS_PER_MENU_ITEM 1
 #endif
 
+#if defined (PANEL_ONE)
+ #define SDSUPPORT
+ #define ULTIMAKERCONTROLLER
+#endif
 
 #if defined (REPRAP_DISCOUNT_FULL_GRAPHIC_SMART_CONTROLLER)
  #define DOGLCD
diff --git a/Marlin/example_configurations/makibox/Configuration.h b/Marlin/example_configurations/makibox/Configuration.h
index e054918b9..d17f3867e 100644
--- a/Marlin/example_configurations/makibox/Configuration.h
+++ b/Marlin/example_configurations/makibox/Configuration.h
@@ -565,6 +565,10 @@ const bool Z_MAX_ENDSTOP_INVERTING = true; // set to true to invert the logic of
 //#define LCD_FEEDBACK_FREQUENCY_HZ 1000	// this is the tone frequency the buzzer plays when on UI feedback. ie Screen Click
 //#define LCD_FEEDBACK_FREQUENCY_DURATION_MS 100 // the duration the buzzer plays the UI feedback sound. ie Screen Click
 
+// PanelOne from T3P3 (via RAMPS 1.4 AUX2/AUX3)
+// http://reprap.org/wiki/PanelOne
+//#define PANEL_ONE
+
 // The MaKr3d Makr-Panel with graphic controller and SD support
 // http://reprap.org/wiki/MaKr3d_MaKrPanel
 //#define MAKRPANEL
@@ -623,6 +627,10 @@ const bool Z_MAX_ENDSTOP_INVERTING = true; // set to true to invert the logic of
  #define ENCODER_STEPS_PER_MENU_ITEM 1
 #endif
 
+#if defined (PANEL_ONE)
+ #define SDSUPPORT
+ #define ULTIMAKERCONTROLLER
+#endif
 
 #if defined (REPRAP_DISCOUNT_FULL_GRAPHIC_SMART_CONTROLLER)
  #define DOGLCD
diff --git a/Marlin/example_configurations/tvrrug/Round2/Configuration.h b/Marlin/example_configurations/tvrrug/Round2/Configuration.h
index fccc267f2..2a18c1e8c 100644
--- a/Marlin/example_configurations/tvrrug/Round2/Configuration.h
+++ b/Marlin/example_configurations/tvrrug/Round2/Configuration.h
@@ -578,6 +578,10 @@ const bool Z_MAX_ENDSTOP_INVERTING = true; // set to true to invert the logic of
 //#define LCD_FEEDBACK_FREQUENCY_HZ 1000	// this is the tone frequency the buzzer plays when on UI feedback. ie Screen Click
 //#define LCD_FEEDBACK_FREQUENCY_DURATION_MS 100 // the duration the buzzer plays the UI feedback sound. ie Screen Click
 
+// PanelOne from T3P3 (via RAMPS 1.4 AUX2/AUX3)
+// http://reprap.org/wiki/PanelOne
+//#define PANEL_ONE
+
 // The MaKr3d Makr-Panel with graphic controller and SD support
 // http://reprap.org/wiki/MaKr3d_MaKrPanel
 //#define MAKRPANEL
@@ -636,6 +640,10 @@ const bool Z_MAX_ENDSTOP_INVERTING = true; // set to true to invert the logic of
  #define ENCODER_STEPS_PER_MENU_ITEM 1
 #endif
 
+#if defined (PANEL_ONE)
+ #define SDSUPPORT
+ #define ULTIMAKERCONTROLLER
+#endif
 
 #if defined (REPRAP_DISCOUNT_FULL_GRAPHIC_SMART_CONTROLLER)
  #define DOGLCD
diff --git a/Marlin/pins_RAMPS_13.h b/Marlin/pins_RAMPS_13.h
index 840804a9d..b2e6d0578 100644
--- a/Marlin/pins_RAMPS_13.h
+++ b/Marlin/pins_RAMPS_13.h
@@ -122,12 +122,22 @@
 #ifdef ULTRA_LCD
 
   #ifdef NEWPANEL
-    #define LCD_PINS_RS 16
-    #define LCD_PINS_ENABLE 17
-    #define LCD_PINS_D4 23
-    #define LCD_PINS_D5 25
-    #define LCD_PINS_D6 27
-    #define LCD_PINS_D7 29
+    #ifdef PANEL_ONE
+      #define LCD_PINS_RS 40
+      #define LCD_PINS_ENABLE 42
+      #define LCD_PINS_D4 65
+      #define LCD_PINS_D5 66
+      #define LCD_PINS_D6 44
+      #define LCD_PINS_D7 64
+    #else
+      #define LCD_PINS_RS 16
+      #define LCD_PINS_ENABLE 17
+      #define LCD_PINS_D4 23
+      #define LCD_PINS_D5 25
+      #define LCD_PINS_D6 27
+      #define LCD_PINS_D7 29
+    #endif
+
 
     #ifdef REPRAP_DISCOUNT_SMART_CONTROLLER
       #define BEEPER 37
diff --git a/Marlin/thermistortables.h b/Marlin/thermistortables.h
index aa1019b0a..61092f005 100644
--- a/Marlin/thermistortables.h
+++ b/Marlin/thermistortables.h
@@ -1096,13 +1096,26 @@ const short temptable_1047[][2] PROGMEM = {
 #endif
 
 #if (THERMISTORHEATER_0 == 999) || (THERMISTORHEATER_1 == 999) || (THERMISTORHEATER_2 == 999) || (THERMISTORHEATER_3 == 999) || (THERMISTORBED == 999) //User defined table
-// Dummy Thermistor table.. It will ALWAYS read 25C.
-const short temptable_999[][2] PROGMEM = {
-   {1*OVERSAMPLENR, 25},
-   {1023*OVERSAMPLENR, 25}
+  // Dummy Thermistor table.. It will ALWAYS read a fixed value.
+  #ifndef DUMMY_THERMISTOR_999_VALUE
+    #define DUMMY_THERMISTOR_999_VALUE 25
+  #endif
+  const short temptable_999[][2] PROGMEM = {
+    {1*OVERSAMPLENR, DUMMY_THERMISTOR_999_VALUE},
+    {1023*OVERSAMPLENR, DUMMY_THERMISTOR_999_VALUE}
 };
 #endif
 
+#if (THERMISTORHEATER_0 == 998) || (THERMISTORHEATER_1 == 998) || (THERMISTORHEATER_2 == 998) || (THERMISTORHEATER_3 == 998) || (THERMISTORBED == 998) //User defined table
+  // Dummy Thermistor table.. It will ALWAYS read a fixed value.
+  #ifndef DUMMY_THERMISTOR_998_VALUE
+    #define DUMMY_THERMISTOR_998_VALUE 25
+  #endif
+  const short temptable_998[][2] PROGMEM = {
+    {1*OVERSAMPLENR, DUMMY_THERMISTOR_998_VALUE},
+    {1023*OVERSAMPLENR, DUMMY_THERMISTOR_998_VALUE}
+};
+#endif
 
 
 #define _TT_NAME(_N) temptable_ ## _N