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diff --git a/Marlin/src/pins/sam/pins_RAMPS_DUO.h b/Marlin/src/pins/sam/pins_RAMPS_DUO.h
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+++ b/Marlin/src/pins/sam/pins_RAMPS_DUO.h
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+/**
+ * Marlin 3D Printer Firmware
+ * Copyright (c) 2020 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
+
+/**
+ * Arduino Mega or Due with RAMPS Duo pin assignments
+ *
+ * Applies to the following boards:
+ *
+ *  RAMPS_DUO_EFB (Hotend, Fan, Bed)
+ *  RAMPS_DUO_EEB (Hotend0, Hotend1, Bed)
+ *  RAMPS_DUO_EFF (Hotend, Fan0, Fan1)
+ *  RAMPS_DUO_EEF (Hotend0, Hotend1, Fan)
+ *  RAMPS_DUO_SF  (Spindle, Controller Fan)
+ *
+ *  Differences between
+ *  RAMPS_14 | RAMPS_DUO
+ *    A9/D63 | A12/D66
+ *   A10/D64 | A13/D67
+ *   A11/D65 | A14/D68
+ *   A12/D66 | A15/D69
+ *       A13 | A9
+ *       A14 | A10
+ *       A15 | A11
+ */
+
+#if NOT_TARGET(__SAM3X8E__, __AVR_ATmega2560__)
+  #error "Oops! Select 'Arduino Due' or 'Arduino/Genuino Mega or Mega 2560' in 'Tools > Board.'"
+#endif
+
+#define BOARD_INFO_NAME "RAMPS Duo"
+
+#define IS_RAMPS_DUO
+
+#include "../ramps/pins_RAMPS.h"
+
+//
+// Temperature Sensors
+//
+#undef TEMP_0_PIN
+#define TEMP_0_PIN                             9  // Analog Input
+
+#undef TEMP_1_PIN
+#define TEMP_1_PIN                            11  // Analog Input
+
+#undef TEMP_BED_PIN
+#define TEMP_BED_PIN                          10  // Analog Input
+
+// SPI for Max6675 or Max31855 Thermocouple
+#undef MAX6675_SS_PIN
+#if DISABLED(SDSUPPORT)
+  #define MAX6675_SS_PIN                      69  // Don't use 53 if using Display/SD card
+#else
+  #define MAX6675_SS_PIN                      69  // Don't use 49 (SD_DETECT_PIN)
+#endif
+
+//
+// LCD / Controller
+//
+#if HAS_WIRED_LCD
+
+  #if BOTH(IS_NEWPANEL, PANEL_ONE)
+    #undef LCD_PINS_D4
+    #define LCD_PINS_D4                       68
+
+    #undef LCD_PINS_D5
+    #define LCD_PINS_D5                       69
+
+    #undef LCD_PINS_D7
+    #define LCD_PINS_D7                       67
+  #endif
+
+  #if IS_NEWPANEL
+
+    #if ENABLED(REPRAPWORLD_GRAPHICAL_LCD)
+
+      #undef BTN_EN1
+      #define BTN_EN1                         67
+
+      #undef BTN_ENC
+      #define BTN_ENC                         66
+
+    #elif ENABLED(MINIPANEL)
+
+      #undef DOGLCD_CS
+      #define DOGLCD_CS                       69
+
+      #undef LCD_BACKLIGHT_PIN
+      #define LCD_BACKLIGHT_PIN               68  // backlight LED on A14/D68
+
+      #undef KILL_PIN
+      #define KILL_PIN                        67
+
+      #undef BTN_EN2
+      #define BTN_EN2                         66
+
+    #else
+
+      #if IS_RRW_KEYPAD
+        #undef BTN_EN1
+        #define BTN_EN1                       67  // encoder
+
+        #undef BTN_ENC
+        #define BTN_ENC                       66  // enter button
+      #elif ENABLED(PANEL_ONE)
+        #undef BTN_EN2
+        #define BTN_EN2                       66  // AUX2 PIN 4
+      #endif
+    #endif
+
+    #if ENABLED(REPRAP_DISCOUNT_FULL_GRAPHIC_SMART_CONTROLLER)
+      #define BTN_ENC_EN             LCD_PINS_D7  // Detect the presence of the encoder
+    #endif
+
+  #endif // IS_NEWPANEL
+
+#endif // HAS_WIRED_LCD