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diff --git a/Marlin/src/pins/stm32f1/pins_CHITU3D.h b/Marlin/src/pins/stm32f1/pins_CHITU3D.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
+
+#if NOT_TARGET(__STM32F1__)
+  #error "Oops! Select an STM32F1 board in 'Tools > Board.'"
+#endif
+
+/**
+ * 2017 Victor Perez Marlin for stm32f1 test
+ */
+
+#define BOARD_INFO_NAME      "Chitu3D"
+#define DEFAULT_MACHINE_NAME "STM32F103RET6"
+
+#define BOARD_NO_NATIVE_USB
+
+// Enable I2C_EEPROM for testing
+//#define I2C_EEPROM
+
+// Ignore temp readings during development.
+//#define BOGUS_TEMPERATURE_GRACE_PERIOD    2000
+
+//
+// Steppers
+//
+#define X_STEP_PIN                          PE5
+#define X_DIR_PIN                           PE6
+#define X_ENABLE_PIN                        PC13
+#define X_MIN_PIN                           PG10
+#define X_MAX_PIN                           -1
+
+#define Y_STEP_PIN                          PE2
+#define Y_DIR_PIN                           PE3
+#define Y_ENABLE_PIN                        PE4
+#define Y_MIN_PIN                           PA12
+#define Y_MAX_PIN
+
+#define Z_STEP_PIN                          PB9
+#define Z_DIR_PIN                           PE0
+#define Z_ENABLE_PIN                        PE1
+#define Z_MIN_PIN                           PA14
+#define Z_MAX_PIN                           -1
+
+#define Y2_STEP_PIN                         -1
+#define Y2_DIR_PIN                          -1
+#define Y2_ENABLE_PIN                       -1
+
+#define Z2_STEP_PIN                         -1
+#define Z2_DIR_PIN                          -1
+#define Z2_ENABLE_PIN                       -1
+
+#define E0_STEP_PIN                         PB4
+#define E0_DIR_PIN                          PB5
+#define E0_ENABLE_PIN                       PB8
+
+#define E1_STEP_PIN                         -1
+#define E1_DIR_PIN                          -1
+#define E1_ENABLE_PIN                       -1
+
+#define E2_STEP_PIN                         -1
+#define E2_DIR_PIN                          -1
+#define E2_ENABLE_PIN                       -1
+
+//
+// Misc. Functions
+//
+#define SDSS                                -1
+#define LED_PIN                             -1
+
+#ifndef CASE_LIGHT_PIN
+  #define CASE_LIGHT_PIN                    PA8   // 8
+#endif
+
+#define PS_ON_PIN                           -1
+#define KILL_PIN                            PD6   // LED strip 24v
+
+//
+// Heaters / Fans
+//
+#define HEATER_0_PIN                        PD12  // HOT-END
+#define HEATER_1_PIN                        -1
+#define HEATER_2_PIN                        -1
+
+#define HEATER_BED_PIN                      PG11  // HOT-BED
+#define HEATER_BED2_PIN                     -1    // BED2
+#define HEATER_BED3_PIN                     -1    // BED3
+
+#ifndef FAN_PIN
+  #define FAN_PIN                           PG14  // MAIN BOARD FAN
+#endif
+
+#define FAN_SOFT_PWM
+
+//
+// Temperature Sensors
+//
+#define TEMP_BED_PIN                        PA0   // Analog Input
+#define TEMP_0_PIN                          PA1   // Analog Input
+#define TEMP_1_PIN                          -1    // Analog Input
+#define TEMP_2_PIN                          -1    // Analog Input
+
+//
+// LCD Pins
+//
+#if HAS_WIRED_LCD
+
+  #if ENABLED(REPRAPWORLD_GRAPHICAL_LCD)
+    #define LCD_PINS_RS                     PD1   // 49  // CS chip select /SS chip slave select
+    #define LCD_PINS_ENABLE                 PD3   // 51  // SID (MOSI)
+    #define LCD_PINS_D4                     PD4   // 52  // SCK (CLK) clock
+  #elif BOTH(IS_NEWPANEL, PANEL_ONE)
+    #define LCD_PINS_RS                     PB8
+    #define LCD_PINS_ENABLE                 PD2
+    #define LCD_PINS_D4                     PB12
+    #define LCD_PINS_D5                     PB13
+    #define LCD_PINS_D6                     PB14
+    #define LCD_PINS_D7                     PB15
+  #else
+    #define LCD_PINS_RS                     PB8
+    #define LCD_PINS_ENABLE                 PD2
+    #define LCD_PINS_D4                     PB12
+    #define LCD_PINS_D5                     PB13
+    #define LCD_PINS_D6                     PB14
+    #define LCD_PINS_D7                     PB15
+    #if !IS_NEWPANEL
+      #define BEEPER_PIN                    PC1   // 33
+      // Buttons attached to a shift register
+      // Not wired yet
+      //#define SHIFT_CLK_PIN               PC6   // 38
+      //#define SHIFT_LD_PIN                PC10  // 42
+      //#define SHIFT_OUT_PIN               PC8   // 40
+      //#define SHIFT_EN_PIN                PA1   // 17
+    #endif
+  #endif
+
+  #if IS_NEWPANEL
+
+    #if IS_RRD_SC
+
+      #define BEEPER_PIN                    PC5
+
+      #define BTN_EN1                       PB15  // 31
+      #define BTN_EN2                       PC1   // 33
+      #define BTN_ENC                       PC3   // 35
+
+      #define SD_DETECT_PIN                 PD1   // 49
+      #define KILL_PIN                      PC9   // 41
+
+      #if ENABLED(BQ_LCD_SMART_CONTROLLER)
+        #define LCD_BACKLIGHT_PIN           PC7   // 39
+      #endif
+
+    #elif ENABLED(REPRAPWORLD_GRAPHICAL_LCD)
+
+      #define BTN_EN1                       PE0   // 64
+      #define BTN_EN2                       PD11  // 59
+      #define BTN_ENC                       PD15  // 63
+      #define SD_DETECT_PIN                 PC10  // 42
+
+    #elif ENABLED(LCD_I2C_PANELOLU2)
+
+      #define BTN_EN1                       PC15  // 47
+      #define BTN_EN2                       PC11  // 43
+      #define BTN_ENC                       PC0   // 32
+      #define LCD_SDSS                      PD5   // 53
+      #define SD_DETECT_PIN                 -1
+      #define KILL_PIN                      PC9   // 41
+
+    #elif ENABLED(LCD_I2C_VIKI)
+
+      #define BTN_EN1                       PB6   // 22   // https://files.panucatt.com/datasheets/viki_wiring_diagram.pdf explains 40/42.
+      #define BTN_EN2                       PA7   //  7   // 22/7 are unused on RAMPS_14. 22 is unused and 7 the SERVO0_PIN on RAMPS_13.
+
+      #define BTN_ENC                       -1
+      #define LCD_SDSS                      PD5   // 53
+      #define SD_DETECT_PIN                 PD1   // 49
+
+    #elif ANY(VIKI2, miniVIKI)
+
+      #define BEEPER_PIN                    PC1   // 33
+
+      // Pins for DOGM SPI LCD Support
+      #define DOGLCD_A0                     PC12  // 44
+      #define DOGLCD_CS                     PC13  // 45
+      #define LCD_SCREEN_ROT_180
+
+      #define BTN_EN1                       PB6   // 22
+      #define BTN_EN2                       PA7   //  7
+      #define BTN_ENC                       PC7   // 39
+
+      #define SDSS                          PD5   // 53
+      #define SD_DETECT_PIN                 -1    // Pin 49 for display sd interface, 72 for easy adapter board
+
+      #define KILL_PIN                      PB15  // 31
+
+      #define STAT_LED_RED_PIN              PC0   // 32
+      #define STAT_LED_BLUE_PIN             PC3   // 35
+
+    #elif ENABLED(ELB_FULL_GRAPHIC_CONTROLLER)
+      #define BTN_EN1                       PC3   // 35
+      #define BTN_EN2                       PC5   // 37
+      #define BTN_ENC                       PB15  // 31
+      #define SD_DETECT_PIN                 PD1   // 49
+      #define LCD_SDSS                      PD5   // 53
+      #define KILL_PIN                      PC9   // 41
+      #define BEEPER_PIN                    PB7   // 23
+      #define DOGLCD_CS                     PB13  // 29
+      #define DOGLCD_A0                     PB11  // 27
+      #define LCD_BACKLIGHT_PIN             PC1   // 33
+
+    #elif ENABLED(MINIPANEL)
+
+      #define BEEPER_PIN                    PC10  // 42
+      // Pins for DOGM SPI LCD Support
+      #define DOGLCD_A0                     PC12  // 44
+      #define DOGLCD_CS                     PE2   // 66
+      #define LCD_BACKLIGHT_PIN             PE1   // 65   // backlight LED on A11/D65
+      #define SDSS                          PD5   // 53
+
+      #define KILL_PIN                      PE0   // 64
+      // GLCD features
+      // Uncomment screen orientation
+      //#define LCD_SCREEN_ROT_90
+      //#define LCD_SCREEN_ROT_180
+      //#define LCD_SCREEN_ROT_270
+      // The encoder and click button
+      #define BTN_EN1                       PC8   // 40
+      #define BTN_EN2                       PD15  // 63
+      #define BTN_ENC                       PD11  // 59
+      // not connected to a pin
+      #define SD_DETECT_PIN                 PD1   // 49
+
+    #else
+
+      // Beeper on AUX-4
+      #define BEEPER_PIN                    PC1   // 33
+
+      // Buttons directly attached to AUX-2
+      #if IS_RRW_KEYPAD
+        #define BTN_EN1                     PE0   // 64
+        #define BTN_EN2                     PD11  // 59
+        #define BTN_ENC                     PD15  // 63
+        #define SHIFT_OUT_PIN               PC8   // 40
+        #define SHIFT_CLK_PIN               PC12  // 44
+        #define SHIFT_LD_PIN                PC10  // 42
+      #elif ENABLED(PANEL_ONE)
+        #define BTN_EN1                     PD11  // 59   // AUX2 PIN 3
+        #define BTN_EN2                     PD15  // 63   // AUX2 PIN 4
+        #define BTN_ENC                     PD1   // 49   // AUX3 PIN 7
+      #else
+        #define BTN_EN1                     PC5   // 37
+        #define BTN_EN2                     PC3   // 35
+        #define BTN_ENC                     PB15  // 31
+      #endif
+
+      #if ENABLED(G3D_PANEL)
+        #define SD_DETECT_PIN               PD1   // 49
+        #define KILL_PIN                    PC9   // 41
+      #else
+        //#define SD_DETECT_PIN             -1    // Ramps doesn't use this
+      #endif
+
+    #endif
+  #endif // IS_NEWPANEL
+
+  #if ENABLED(REPRAP_DISCOUNT_FULL_GRAPHIC_SMART_CONTROLLER)
+    #define BTN_ENC_EN               LCD_PINS_D7  // Detect the presence of the encoder
+  #endif
+
+#endif // HAS_WIRED_LCD