diff --git a/.github/workflows/test-builds.yml b/.github/workflows/test-builds.yml
index e45bf42f29a7..c6afaffebf7a 100644
--- a/.github/workflows/test-builds.yml
+++ b/.github/workflows/test-builds.yml
@@ -58,15 +58,16 @@ jobs:
#- STM32F103RC_btt_maple
- STM32F103RC_btt_USB_maple
- - STM32F103RC_fysetc
+ - STM32F103RC_fysetc_maple
- STM32F103RC_meeb
- - jgaurora_a5s_a1
+ - jgaurora_a5s_a1_maple
- STM32F103VE_longer_maple
#- mks_robin_maple
- - mks_robin_lite
- - mks_robin_pro
+ - mks_robin_lite_maple
+ - mks_robin_pro_maple
#- mks_robin_nano35_maple
#- STM32F103RET6_creality_maple
+ - STM32F103VE_ZM3E4V2_USB_maple
# STM32 (ST) Environments
diff --git a/Marlin/src/core/boards.h b/Marlin/src/core/boards.h
index ba3c9f978c63..2ed585919966 100644
--- a/Marlin/src/core/boards.h
+++ b/Marlin/src/core/boards.h
@@ -346,6 +346,9 @@
#define BOARD_BEAST 4048 // STM32F103RET6 Libmaple-based controller
#define BOARD_MINGDA_MPX_ARM_MINI 4049 // STM32F103ZET6 Mingda MD-16
#define BOARD_GTM32_PRO_VD 4050 // STM32F103VET6 controller
+#define BOARD_ZONESTAR_ZM3E2 4051 // Zonestar ZM3E2 (STM32F103RCT6)
+#define BOARD_ZONESTAR_ZM3E4 4052 // Zonestar ZM3E4 V1 (STM32F103VCT6)
+#define BOARD_ZONESTAR_ZM3E4V2 4053 // Zonestar ZM3E4 V2 (STM32F103VCT6)
//
// ARM Cortex-M4F
diff --git a/Marlin/src/lcd/tft_io/touch_calibration.cpp b/Marlin/src/lcd/tft_io/touch_calibration.cpp
index 0f9d25caeb62..2a54d2af4005 100644
--- a/Marlin/src/lcd/tft_io/touch_calibration.cpp
+++ b/Marlin/src/lcd/tft_io/touch_calibration.cpp
@@ -1,6 +1,6 @@
/**
* Marlin 3D Printer Firmware
- * Copyright (c) 2019 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
+ * Copyright (c) 2020 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
*
* 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
diff --git a/Marlin/src/lcd/tft_io/touch_calibration.h b/Marlin/src/lcd/tft_io/touch_calibration.h
index f8cbf99bf000..112fbdca301e 100644
--- a/Marlin/src/lcd/tft_io/touch_calibration.h
+++ b/Marlin/src/lcd/tft_io/touch_calibration.h
@@ -1,6 +1,6 @@
/**
* Marlin 3D Printer Firmware
- * Copyright (c) 2019 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
+ * Copyright (c) 2020 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
*
* 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
diff --git a/Marlin/src/pins/lpc1769/pins_BTT_SKR_E3_TURBO.h b/Marlin/src/pins/lpc1769/pins_BTT_SKR_E3_TURBO.h
index d648b25efb13..cecb44efbe18 100644
--- a/Marlin/src/pins/lpc1769/pins_BTT_SKR_E3_TURBO.h
+++ b/Marlin/src/pins/lpc1769/pins_BTT_SKR_E3_TURBO.h
@@ -212,7 +212,7 @@
* BEEPER | 5 6 ENT (BTN_ENC) (LCD_D4) P0_15 | 5 6 P0_20 (BTN_EN2)
* (SKR_RX1) TX | 7 8 | RX (SKR_TX1) Reset | 7 8 | P0_19 (BTN_EN1)
* NC | 9 10 | NC (BTN_ENC) P0_16 | 9 10 | P2_08 (BEEPER)
- * ------ ------
+ * ------ ------
*/
#define BEEPER_PIN EXP1_10_PIN
diff --git a/Marlin/src/pins/pins.h b/Marlin/src/pins/pins.h
index b3e16056136f..f1c431cf048b 100644
--- a/Marlin/src/pins/pins.h
+++ b/Marlin/src/pins/pins.h
@@ -561,6 +561,12 @@
#include "stm32f1/pins_BEAST.h" // STM32F103VE? env:STM32F103VE env:STM32F103RE_maple
#elif MB(MINGDA_MPX_ARM_MINI)
#include "stm32f1/pins_MINGDA_MPX_ARM_MINI.h" // STM32F1 env:mingda_mpx_arm_mini
+#elif MB(ZONESTAR_ZM3E2)
+ #include "stm32f1/pins_ZM3E2_V1_0.h" // STM32F1 env:STM32F103RC_ZM3E2_USB env:STM32F103RC_ZM3E2_USB_maple
+#elif MB(ZONESTAR_ZM3E4)
+ #include "stm32f1/pins_ZM3E4_V1_0.h" // STM32F1 env:STM32F103VC_ZM3E4_USB env:STM32F103VC_ZM3E4_USB_maple
+#elif MB(ZONESTAR_ZM3E4V2)
+ #include "stm32f1/pins_ZM3E4_V2_0.h" // STM32F1 env:STM32F103VE_ZM3E4V2_USB env:STM32F103VE_ZM3E4V2_USB_maple
//
// ARM Cortex-M4F
diff --git a/Marlin/src/pins/stm32f1/pins_BTT_SKR_MINI_E3_V2_0.h b/Marlin/src/pins/stm32f1/pins_BTT_SKR_MINI_E3_V2_0.h
index c51e7f48d94a..9dc02c495b45 100644
--- a/Marlin/src/pins/stm32f1/pins_BTT_SKR_MINI_E3_V2_0.h
+++ b/Marlin/src/pins/stm32f1/pins_BTT_SKR_MINI_E3_V2_0.h
@@ -23,7 +23,7 @@
#define SKR_MINI_E3_V2
-#define BOARD_CUSTOM_BUILD_FLAGS -DTONE_CHANNEL=4 -DTONE_TIMER=4
+#define BOARD_CUSTOM_BUILD_FLAGS -DTONE_CHANNEL=4 -DTONE_TIMER=4 -DTIMER_TONE=4
// Onboard I2C EEPROM
#if NO_EEPROM_SELECTED
diff --git a/Marlin/src/pins/stm32f1/pins_JGAURORA_A5S_A1.h b/Marlin/src/pins/stm32f1/pins_JGAURORA_A5S_A1.h
index bded0edd3a7b..98465a86073e 100644
--- a/Marlin/src/pins/stm32f1/pins_JGAURORA_A5S_A1.h
+++ b/Marlin/src/pins/stm32f1/pins_JGAURORA_A5S_A1.h
@@ -45,14 +45,19 @@
#endif
//#define MCU_STM32F103ZE // not yet required
-// Enable EEPROM Emulation for this board, so that we don't overwrite factory data
-//#define I2C_EEPROM // AT24C64
-//#define MARLIN_EEPROM_SIZE 0x8000UL // 64KB
+// Enable EEPROM Emulation for this board, so that we don't overwrite factory data
+#if NO_EEPROM_SELECTED
+ //#define I2C_EEPROM // AT24C64
+ //#define FLASH_EEPROM_EMULATION
+#endif
-//#define FLASH_EEPROM_EMULATION
-//#define MARLIN_EEPROM_SIZE 0x1000UL // 4KB
-//#define MARLIN_EEPROM_SIZE (EEPROM_START_ADDRESS + (EEPROM_PAGE_SIZE) * 2UL)
+#if ENABLED(I2C_EEPROM)
+ //#define MARLIN_EEPROM_SIZE 0x8000UL // 32KB
+#elif ENABLED(FLASH_EEPROM_EMULATION)
+ //#define MARLIN_EEPROM_SIZE 0x1000UL // 4KB
+ //#define MARLIN_EEPROM_SIZE (EEPROM_START_ADDRESS + (EEPROM_PAGE_SIZE) * 2UL)
+#endif
//
// Limit Switches
diff --git a/Marlin/src/pins/stm32f1/pins_MINGDA_MPX_ARM_MINI.h b/Marlin/src/pins/stm32f1/pins_MINGDA_MPX_ARM_MINI.h
index 14f2ad981ac5..3fed0adac336 100644
--- a/Marlin/src/pins/stm32f1/pins_MINGDA_MPX_ARM_MINI.h
+++ b/Marlin/src/pins/stm32f1/pins_MINGDA_MPX_ARM_MINI.h
@@ -22,7 +22,7 @@
#pragma once
/**
- * MKS Robin mini (STM32F130VET6) board pin assignments
+ * MKS Robin mini (STM32F103VET6) board pin assignments
*/
#if NOT_TARGET(STM32F1, STM32F1xx)
diff --git a/Marlin/src/pins/stm32f1/pins_MKS_ROBIN.h b/Marlin/src/pins/stm32f1/pins_MKS_ROBIN.h
index f91297805150..4d798ffe282b 100644
--- a/Marlin/src/pins/stm32f1/pins_MKS_ROBIN.h
+++ b/Marlin/src/pins/stm32f1/pins_MKS_ROBIN.h
@@ -22,7 +22,7 @@
#pragma once
/**
- * MKS Robin (STM32F130ZET6) board pin assignments
+ * MKS Robin (STM32F103ZET6) board pin assignments
* https://github.com/makerbase-mks/MKS-Robin/tree/master/MKS%20Robin/Hardware
*/
diff --git a/Marlin/src/pins/stm32f1/pins_MKS_ROBIN_E3P.h b/Marlin/src/pins/stm32f1/pins_MKS_ROBIN_E3P.h
index 7aa308f7b309..2fc99f297104 100644
--- a/Marlin/src/pins/stm32f1/pins_MKS_ROBIN_E3P.h
+++ b/Marlin/src/pins/stm32f1/pins_MKS_ROBIN_E3P.h
@@ -22,7 +22,7 @@
#pragma once
/**
- * MKS Robin nano (STM32F130VET6) board pin assignments
+ * MKS Robin nano (STM32F103VET6) board pin assignments
*/
#include "env_validate.h"
diff --git a/Marlin/src/pins/stm32f1/pins_MKS_ROBIN_MINI.h b/Marlin/src/pins/stm32f1/pins_MKS_ROBIN_MINI.h
index be23394af7ab..d4a2f59b4256 100644
--- a/Marlin/src/pins/stm32f1/pins_MKS_ROBIN_MINI.h
+++ b/Marlin/src/pins/stm32f1/pins_MKS_ROBIN_MINI.h
@@ -22,7 +22,7 @@
#pragma once
/**
- * MKS Robin mini (STM32F130VET6) board pin assignments
+ * MKS Robin mini (STM32F103VET6) board pin assignments
*/
#include "env_validate.h"
diff --git a/Marlin/src/pins/stm32f1/pins_MKS_ROBIN_NANO.h b/Marlin/src/pins/stm32f1/pins_MKS_ROBIN_NANO.h
index 368c0a24582e..2a5c9f727372 100644
--- a/Marlin/src/pins/stm32f1/pins_MKS_ROBIN_NANO.h
+++ b/Marlin/src/pins/stm32f1/pins_MKS_ROBIN_NANO.h
@@ -22,7 +22,7 @@
#pragma once
/**
- * MKS Robin nano (STM32F130VET6) board pin assignments
+ * MKS Robin nano (STM32F103VET6) board pin assignments
* https://github.com/makerbase-mks/MKS-Robin-Nano-V1.X/tree/master/hardware
*/
diff --git a/Marlin/src/pins/stm32f1/pins_MKS_ROBIN_NANO_V2.h b/Marlin/src/pins/stm32f1/pins_MKS_ROBIN_NANO_V2.h
index cdb9448410d9..31ce016e67a1 100644
--- a/Marlin/src/pins/stm32f1/pins_MKS_ROBIN_NANO_V2.h
+++ b/Marlin/src/pins/stm32f1/pins_MKS_ROBIN_NANO_V2.h
@@ -22,7 +22,7 @@
#pragma once
/**
- * MKS Robin nano (STM32F130VET6) board pin assignments
+ * MKS Robin nano (STM32F103VET6) board pin assignments
*/
#if NOT_TARGET(__STM32F1__, STM32F1)
diff --git a/Marlin/src/pins/stm32f1/pins_TRIGORILLA_PRO.h b/Marlin/src/pins/stm32f1/pins_TRIGORILLA_PRO.h
index 1de3729dcc58..5b59a157f163 100644
--- a/Marlin/src/pins/stm32f1/pins_TRIGORILLA_PRO.h
+++ b/Marlin/src/pins/stm32f1/pins_TRIGORILLA_PRO.h
@@ -22,7 +22,7 @@
#pragma once
/**
- * ANYCUBIC Trigorilla Pro (STM32F130ZET6) board pin assignments.
+ * ANYCUBIC Trigorilla Pro (STM32F103ZET6) board pin assignments.
* It is the same used by the Tronxy X5SA thanks to ftoz1 for sharing it
* https://github.com/MarlinFirmware/Marlin/issues/14655
* https://github.com/MarlinFirmware/Marlin/files/3401484/x5sa-main_board-2.pdf
diff --git a/Marlin/src/pins/stm32f1/pins_ZM3E2_V1_0.h b/Marlin/src/pins/stm32f1/pins_ZM3E2_V1_0.h
new file mode 100644
index 000000000000..bad5db7125e1
--- /dev/null
+++ b/Marlin/src/pins/stm32f1/pins_ZM3E2_V1_0.h
@@ -0,0 +1,235 @@
+/**
+ * Marlin 3D Printer Firmware
+ * Copyright (c) 2021 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 .
+ *
+ */
+#pragma once
+
+#include "env_validate.h"
+
+#define BOARD_INFO_NAME "ZONESTAR ZM3E2 V1.0"
+
+#define DISABLE_DEBUG
+//#define DISABLE_JTAG
+
+#if NO_EEPROM_SELECTED
+ #define FLASH_EEPROM_EMULATION
+ #define EEPROM_PAGE_SIZE (0x800) // 2KB
+ #define EEPROM_START_ADDRESS (0x08000000 + (STM32_FLASH_SIZE) * 1024 - 2 * EEPROM_PAGE_SIZE)
+ #define MARLIN_EEPROM_SIZE EEPROM_PAGE_SIZE // 2KB
+#endif
+
+//=============================================================================
+// Zonestar ZM3E2 V1.0 (STM32F103RCT6) board pin assignments
+//=============================================================================
+// PA0 PWR_HOLD | PB0 BEEP | PC0 HEATER_0
+// PA1 FAN_PIN | PB1 KILL | PC1 HEATER_BED
+// PA2 TX2 | PB2 LCD_SDA | PC2 TEMP_BED
+// PA3 RX2 | PB3 E1_EN | PC3 TEMP_E0
+// PA4 SD_CS | PB4 Z_STOP | PC4 SD_DETECT
+// PA5 SD_SCK | PB5 Z_DIR | PC5 BTN_EN2
+// PA6 SD_MISO | PB6 Z_STEP | PC6 FAN1
+// PA7 SD_MOSI | PB7 Z_EN | PC7 FIL_RUNOUT
+// PA8 X_DIR | PB8 Y_STEP | PC8 X_EN
+// PA9 LCD_RS | PB9 Y_DIR | PC9 X_STEP
+// PA10 LCD_SCK | PB10 BTN_ENC | PC10 Z_MIN_PROBE_PIN
+// PA11 USB_D- | PB11 BTN_EN1 | PC11 FIL_RUNOUT2
+// PA12 USB_D+ | PB12 LED | PC12 E1_DIR
+// PA13 MS1 | PB13 E0_EN | PC13 Y_STOP
+// PA14 MS2 | PB14 E0_STEP | PC14 Y_EN
+// PA15 PWM | PB15 E0_DIR | PC15 X_STOP
+// PD0 NC
+// PD1 NC
+// PD2 E1_STEP
+
+//=============================================================================
+// EXP1 connector
+// MARK I/O ZONESTAR_12864LCD ZONESTAR_12864OLED
+// 10 MOSI PB1 KILL SDA
+// 9 SCK PB0 BEEP SCK
+// 8 TX1 PA9 DOGLCD_CS CS
+// 7 RX1 PA10 DOGLCD_SCK DC
+// 6 ENA PC5 BTN_EN2 KNOB_ENB
+// 5 DAT PB2 DOGLCD_MOSI RESET
+// 4 TX3 PB10 BTN_ENC KNOB_ENC
+// 3 RX3 PB11 BTN_EN1 KNOB_ENA
+// 2 +5V
+// 1 GND
+
+#define EXP1_03_PIN PB11
+#define EXP1_04_PIN PB10
+#define EXP1_05_PIN PB2
+#define EXP1_06_PIN PC5
+#define EXP1_07_PIN PA10
+#define EXP1_08_PIN PA9
+#define EXP1_09_PIN PB0
+#define EXP1_10_PIN PB1
+
+// AUX1 connector
+// 1 +5V
+// 2 TX2 PA2 UART2_TX
+// 3 RX2 PA3 UART2_RX
+// 4 GND
+
+// AUX2 connector to BLTouch
+// 1 +5V
+// 2 SEN PC10
+// 3 PWM PA15
+// 4 GND
+//=============================================================================
+
+//
+// Servos
+//
+#define SERVO0_PIN PA15
+
+//
+// Limit Switches
+//
+#define X_STOP_PIN PC15
+#define Y_STOP_PIN PC13
+#define Z_STOP_PIN PB4
+
+#ifndef Z_MIN_PROBE_PIN
+ #define Z_MIN_PROBE_PIN PC10 // BLTouch (3DTouch)
+#endif
+
+//
+// Filament Runout Sensor
+//
+#define FIL_RUNOUT_PIN PC7 // E0_SW
+//#define FIL_RUNOUT2_PIN PC11 // E1_SW
+
+//
+// Steppers
+//
+#define MS1_PIN PA13
+#define MS2_PIN PA14
+
+#define X_STEP_PIN PC9
+#define X_DIR_PIN PA8
+#define X_ENABLE_PIN PC8
+
+#define Y_STEP_PIN PB8
+#define Y_DIR_PIN PB9
+#define Y_ENABLE_PIN PC14
+
+#define Z_STEP_PIN PB6
+#define Z_DIR_PIN PB5
+#define Z_ENABLE_PIN PB7
+
+#define E0_STEP_PIN PB14
+#define E0_DIR_PIN PB15
+#define E0_ENABLE_PIN PB13
+
+#define E1_STEP_PIN PD2
+#define E1_DIR_PIN PC12
+#define E1_ENABLE_PIN PB3
+
+//
+// Heaters / Fans
+//
+#define HEATER_0_PIN PC0 // EXTRUDER 1
+#define HEATER_BED_PIN PC1 // BED
+
+#define FAN1_PIN PC6
+#define FAN_PIN PA1
+
+//
+// Temperature Sensors
+//
+#define TEMP_BED_PIN PC2 // Analog Input
+#define TEMP_0_PIN PC3 // Analog Input
+
+#define LED_PIN PB12
+//#define KILL_PIN PB1 // @EXP1
+#define SUICIDE_PIN PA0
+
+//
+// SD card
+//
+#define ENABLE_SPI1
+#define SD_DETECT_PIN PC4
+#define SD_SCK_PIN PA5
+#define SD_MISO_PIN PA6
+#define SD_MOSI_PIN PA7
+#define SD_SS_PIN PA4
+
+//
+// LCD Pins
+//
+#if ENABLED(ZONESTAR_12864LCD)
+
+ //================================================================================
+ // LCD 128x64
+ //================================================================================
+ // EXP1 connector
+ // MARK I/O ZONESTAR_12864LCD
+ // 10 MOSI PB1 KILL
+ // 9 SCK PB0 BEEP
+ // 8 TX1 PA9 LCD_PINS_RS
+ // 7 RX1 PA10 LCD_PINS_D4
+ // 6 ENA PC5 BTN_EN2
+ // 5 DAT PB2 LCD_PINS_ENABLE
+ // 4 TX3 PB10 BTN_ENC
+ // 3 RX3 PB11 BTN_EN1
+ // 2 +5V
+ // 1 GND
+
+ #define LCDSCREEN_NAME "ZONESTAR LCD12864"
+ #define LCD_PINS_RS EXP1_08_PIN
+ #define LCD_PINS_ENABLE EXP1_05_PIN
+ #define LCD_PINS_D4 EXP1_07_PIN
+ //#define KILL_PIN EXP1_10_PIN
+ #define BEEPER_PIN EXP1_09_PIN
+ #define BTN_EN1 EXP1_03_PIN
+ #define BTN_EN2 EXP1_06_PIN
+ #define BTN_ENC EXP1_04_PIN
+ #define BOARD_ST7920_DELAY_1 DELAY_NS(125)
+ #define BOARD_ST7920_DELAY_2 DELAY_NS(200)
+ #define BOARD_ST7920_DELAY_3 DELAY_NS(125)
+
+#elif EITHER(ZONESTAR_12864OLED, ZONESTAR_12864OLED_SSD1306)
+
+ //================================================================================
+ // OLED 128x64
+ //================================================================================
+ // 10 MOSI PB1 OLED_SDA
+ // 9 SCK PB0 OLED_SCK
+ // 8 TX1 PA9 OLED_CS
+ // 7 RX1 PA10 OLED_DC
+ // 6 ENA PC5 KNOB_ENA
+ // 5 DAT PB2 OLED_RESET
+ // 4 TX3 PB10 KNOB_ENC
+ // 3 RX3 PB11 KNOB_ENB
+
+ #define FORCE_SOFT_SPI
+ #define LCDSCREEN_NAME "ZONESTAR 12864OLED"
+ #define LCD_PINS_RS EXP1_05_PIN // = LCD_RESET_PIN
+ #define LCD_PINS_DC EXP1_07_PIN // DC
+ #define DOGLCD_CS EXP1_08_PIN // CS
+ #define DOGLCD_A0 LCD_PINS_DC // A0 = DC
+ #define DOGLCD_MOSI EXP1_10_PIN // SDA
+ #define DOGLCD_SCK EXP1_09_PIN // SCK
+ // Encoder
+ #define BTN_EN1 EXP1_03_PIN
+ #define BTN_EN2 EXP1_06_PIN
+ #define BTN_ENC EXP1_04_PIN
+
+#endif
diff --git a/Marlin/src/pins/stm32f1/pins_ZM3E4_V1_0.h b/Marlin/src/pins/stm32f1/pins_ZM3E4_V1_0.h
new file mode 100644
index 000000000000..8a6bb4b5f87b
--- /dev/null
+++ b/Marlin/src/pins/stm32f1/pins_ZM3E4_V1_0.h
@@ -0,0 +1,355 @@
+/**
+ * Marlin 3D Printer Firmware
+ * Copyright (c) 2021 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 .
+ *
+ */
+#pragma once
+
+#include "env_validate.h"
+
+#define BOARD_INFO_NAME "ZONESTAR ZM3E4 V1.0"
+
+//#define DISABLE_DEBUG
+#define DISABLE_JTAG
+
+#if NO_EEPROM_SELECTED
+ #define FLASH_EEPROM_EMULATION
+ #define EEPROM_PAGE_SIZE (0x800) // 2KB
+ #define EEPROM_START_ADDRESS (0x08000000 + (STM32_FLASH_SIZE) * 1024 - 2 * EEPROM_PAGE_SIZE)
+ #define MARLIN_EEPROM_SIZE EEPROM_PAGE_SIZE // 2KB
+#endif
+
+//#define OPTION_DUALZ_DRIVE
+//#define OPTION_Z2_ENDSTOP
+//#define SWITCH_EXTRUDER_SEQUENCE
+
+//=============================================================================
+// Zonestar ZM3E4 V1.0 (STM32F103VCT6) board pin assignments
+//=============================================================================
+// PA0 | PB0 HEAT_1 | PC0 AXU_SDA
+// PA1 | PB1 FAN1 | PC1 TEMP_E1
+// PA2 HEAT_BED | PB2 BOOT1 | PC2 TEMP_E0
+// PA3 PWR_HOLD | PB3 SPI3_SCK | PC3 TEMP_BED
+// PA4 SD_CS | PB4 SPI3_MISO | PC4 SD_DETECT
+// PA5 SD_SCK | PB5 SPI3_MOSI | PC5 HEAT_0
+// PA6 SD_MISO | PB6 SERVO3 | PC6 E1_STEP
+// PA7 SD_MOSI | PB7 SERVO2 | PC7 E1_EN
+// PA8 X_DIR | PB8 FAN2/SERVO1 | PC8 FIL_RUNOUT_PIN
+// PA9 UART1_RX | PB9 SERVO0 | PC9 E0_DIR
+// PA10 UART1_TX | PB10 TX3 | PC10 E0_EN
+// PA11 USB_D- | PB11 RX3 | PC11 Z2_EN
+// PA12 USB_D+ | PB12 LED | PC12 Z2_STEP
+// PA13 SWD_SDO | PB13 Z1_MAX | PC13 X_MIN
+// PA14 SWD_SCK | PB14 Y_MAX | PC14 WIFI_RST
+// PA15 SPI3_CS | PB15 PWR_DET | PC15 WIFI_CS
+// PD0 Z2_DIR | PE0 Y_EN
+// PD1 Z2_MIN | PE1 Y_STEP
+// PD2 Z1_EN | PE2 Y_DIR
+// PD3 Z1_STEP | PE3 Y_MIN
+// PD4 Z1_DIR | PE4 X_DIR
+// PD5 WIFI_RXD | PE5 X_STEP
+// PD6 WIFI_TXD | PE6 X_EN
+// PD7 Z1_MIN | PE7 AXU_SCL
+// PD8 X_MAX | PE8 BTN_EN1
+// PD9 E3_DIR | PE9 LCD_SCK
+// PD10 E3_STEP | PE10 LCD_MOSI
+// PD11 E3_EN | PE11 BEEPER
+// PD12 E2_DIR | PE12 LCD_EN
+// PD13 E2_STEP | PE13 KILL
+// PD14 E2_EN | PE14 BTN_EN2
+// PD15 E1_DIR | PE15 BTN_ENC
+//=============================================================================
+
+// EXP1 connector
+// MARK I/O ZONESTAR_LCD12864 REPRAPDISCOUNT_LCD12864
+// 10 RS PE13 KILL BTN_ENC
+// 9 BP PE11 BEEP BEEP
+// 8 EN PE12 DOGLCD_CS LCDRS
+// 7 MOSI PE10 DOGLCD_SCK LCDE
+// 6 EN1 PE8 BTN_EN1 NC
+// 5 SCK PE9 DOGLCD_MOSI LCD4
+// 4 ENC PE15 BTN_ENC NC
+// 3 EN2 PE14 BTN_EN2 NC
+// 2 +5V +5V
+// 1 GND GND
+
+#define EXP1_03_PIN PE14
+#define EXP1_04_PIN PE15
+#define EXP1_05_PIN PE9
+#define EXP1_06_PIN PE8
+#define EXP1_07_PIN PE10
+#define EXP1_08_PIN PE12
+#define EXP1_09_PIN PE11
+#define EXP1_10_PIN PE13
+
+// EXP2 connector
+// MARK I/O ZONESTAR_LCD12864 REPRAPDISCOUNT_LCD12864
+// 10
+// 9
+// 8 RX0 PA9 UART1_RX
+// 7 TX0 PA10 UART1_TX BTN_EN2
+// 6 CS3 PA15
+// 5 MISO3 PB4 BTN_EN1
+// 4 MOSI3 PB5 KILL
+// 3 SCK3 PB3
+// 2 +5V +5V
+// 1 GND GND
+
+#define EXP2_03_PIN PB3
+#define EXP2_04_PIN PB5
+#define EXP2_05_PIN PB4
+#define EXP2_06_PIN PA15
+#define EXP2_07_PIN PA10
+#define EXP2_08_PIN PA9
+
+// AUX1 connector
+// 1 +5V
+// 2 GND
+// 3 RX3 PB11 UART3_RX
+// 4 TX3 PB10 UART3_TX
+// 5 SCL PE7
+// 6 SDA PC0
+
+// WiFi
+// 1 +5V
+// 2 GND
+// 3 WIFI_TXD PD5 UART2_RX
+// 4 WIFI_RXD PD6 UART2_TX
+// 5 WIFI_RST PC14
+// 6 WIFI_CS PC15
+//=============================================================================
+
+//
+// Servos
+//
+#define SERVO0_PIN PB9
+#define SERVO2_PIN PB7
+#define SERVO3_PIN PB6
+
+//
+// Limit Switches
+//
+#define X_MIN_PIN PC13
+#define X_MAX_PIN PD8
+#define Y_MIN_PIN PE3
+#define Y_MAX_PIN PB14
+#define Z_MIN_PIN PD7
+#define Z_MAX_PIN PB13
+
+//
+// Filament Runout Sensor
+//
+#ifndef FIL_RUNOUT_PIN
+ #define FIL_RUNOUT_PIN PC8
+#endif
+
+//
+// Steppers
+//
+#if ENABLED(COREXY)
+ #define X_ENABLE_PIN PE0
+ #define X_STEP_PIN PE1
+ #define X_DIR_PIN PE2
+
+ #define Y_ENABLE_PIN PE6
+ #define Y_STEP_PIN PE5
+ #define Y_DIR_PIN PE4
+#else
+ #define X_ENABLE_PIN PE6
+ #define X_STEP_PIN PE5
+ #define X_DIR_PIN PE4
+
+ #define Y_ENABLE_PIN PE0
+ #define Y_STEP_PIN PE1
+ #define Y_DIR_PIN PE2
+#endif
+
+#define Z_ENABLE_PIN PD2
+#define Z_STEP_PIN PD3
+#define Z_DIR_PIN PD4
+
+#ifdef OPTION_DUALZ_DRIVE
+ #define Z2_ENABLE_PIN PC11
+ #define Z2_STEP_PIN PC12
+ #define Z2_DIR_PIN PD0
+#endif
+
+#ifdef OPTION_Z2_ENDSTOP
+ #define Z2_MIN_PIN PD1
+ #define Z2_MAX_PIN PB12
+#endif
+
+#ifdef SWITCH_EXTRUDER_SEQUENCE
+ #define E3_ENABLE_PIN PC10
+ #define E3_STEP_PIN PA8
+ #define E3_DIR_PIN PC9
+
+ #define E2_STEP_PIN PC6
+ #define E2_DIR_PIN PD15
+ #define E2_ENABLE_PIN PC7
+
+ #define E1_STEP_PIN PD13
+ #define E1_DIR_PIN PD12
+ #define E1_ENABLE_PIN PD14
+
+ #define E0_STEP_PIN PD10
+ #define E0_DIR_PIN PD9
+ #define E0_ENABLE_PIN PD11
+#else
+ #define E0_ENABLE_PIN PC10
+ #define E0_STEP_PIN PA8
+ #define E0_DIR_PIN PC9
+
+ #define E1_STEP_PIN PC6
+ #define E1_DIR_PIN PD15
+ #define E1_ENABLE_PIN PC7
+
+ #define E2_STEP_PIN PD13
+ #define E2_DIR_PIN PD12
+ #define E2_ENABLE_PIN PD14
+
+ #define E3_STEP_PIN PD10
+ #define E3_DIR_PIN PD9
+ #define E3_ENABLE_PIN PD11
+#endif
+
+//
+// Temperature Sensors
+//
+#define TEMP_0_PIN PC2 // TH0
+#define TEMP_BED_PIN PC3 // TB1
+
+//
+// Heaters / Fans
+//
+#define HEATER_0_PIN PC5 // HEATER0
+#define HEATER_BED_PIN PA2 // HOT BED
+
+#if ENABLED(OPTION_CHAMBER)
+ #define TEMP_CHAMBER_PIN PC1
+ #define HEATER_CHAMBER_PIN PB0
+#else
+ #define TEMP_1_PIN PC1 // TH1
+ #define HEATER_1_PIN PB0 // HEATER1
+#endif
+
+#define FAN_PIN PB1 // FAN1
+#define FAN1_PIN PB8 // FAN2
+
+//
+// Misc. Functions
+//
+
+//#define POWER_LOSS_PIN PB15
+#define LED_PIN PA0
+#define SUICIDE_PIN PA3
+
+//
+// SD card
+//
+#define ENABLE_SPI1
+#define SD_DETECT_PIN PC4
+#define SD_SCK_PIN PA5
+#define SD_MISO_PIN PA6
+#define SD_MOSI_PIN PA7
+#define SD_SS_PIN PA4
+
+// WiFi Functions
+#define WIFI_RST PC15
+#define WIFI_EN PC14
+
+//
+// LCD / Controller
+//
+#if ENABLED(ZONESTAR_12864LCD)
+ #define LCDSCREEN_NAME "ZONESTAR LCD12864"
+ #define LCD_PINS_RS EXP1_08_PIN // 7 CS make sure for zonestar zm3e4!
+ #define LCD_PINS_ENABLE EXP1_05_PIN // 6 DATA make sure for zonestar zm3e4!
+ #define LCD_PINS_D4 EXP1_07_PIN // 8 SCK make sure for zonestar zm3e4!
+ #define BEEPER_PIN EXP1_09_PIN
+ #define KILL_PIN -1 // EXP1_10_PIN
+ #define BTN_EN1 EXP1_06_PIN
+ #define BTN_EN2 EXP1_03_PIN
+ #define BTN_ENC EXP1_04_PIN
+#elif ENABLED(REPRAP_DISCOUNT_FULL_GRAPHIC_SMART_CONTROLLER)
+ #define LCDSCREEN_NAME "REPRAPDISCOUNT LCD12864"
+ #define LCD_PINS_RS EXP1_08_PIN // 7 CS make sure for zonestar zm3e4!
+ #define LCD_PINS_ENABLE EXP1_07_PIN // 6 DATA make sure for zonestar zm3e4!
+ #define LCD_PINS_D4 EXP1_05_PIN // 8 SCK make sure for zonestar zm3e4!
+ #define BEEPER_PIN EXP1_09_PIN
+ #define KILL_PIN EXP2_04_PIN
+ #define BTN_EN1 EXP2_05_PIN
+ #define BTN_EN2 EXP2_07_PIN
+ #define BTN_ENC EXP1_10_PIN
+#elif ENABLED(ZONESTAR_DWIN_LCD)
+ // Connect to EXP2 connector
+ #define LCDSCREEN_NAME "ZONESTAR DWIN LCD"
+ #define BEEPER_PIN EXP2_06_PIN
+ #define KILL_PIN PC0
+ #define BTN_EN1 EXP2_03_PIN
+ #define BTN_EN2 EXP2_04_PIN
+ #define BTN_ENC EXP2_05_PIN
+#endif
+
+#if ENABLED(ZONESTAR_LCD2004_KNOB)
+ #define LCDSCREEN_NAME "LCD2004 KNOB"
+ #define LCD_PINS_RS EXP1_08_PIN
+ #define LCD_PINS_ENABLE EXP1_07_PIN
+ #define LCD_PINS_D4 EXP1_05_PIN
+ #define LCD_PINS_D5 EXP1_06_PIN
+ #define LCD_PINS_D6 EXP1_03_PIN
+ #define LCD_PINS_D7 EXP1_04_PIN
+ #define BTN_EN1 EXP2_07_PIN
+ #define BTN_EN2 EXP2_05_PIN
+ #define BTN_ENC EXP1_10_PIN
+ #define BEEPER_PIN EXP1_09_PIN
+ #define KILL_PIN EXP2_04_PIN
+#elif ENABLED(ZONESTAR_LCD2004_ADCKEY)
+ #define LCDSCREEN_NAME "LCD2004 5KEY"
+ #define LCD_PINS_RS EXP1_08_PIN
+ #define LCD_PINS_ENABLE EXP1_07_PIN
+ #define LCD_PINS_D4 EXP1_05_PIN
+ #define LCD_PINS_D5 EXP1_06_PIN
+ #define LCD_PINS_D6 EXP1_03_PIN
+ #define LCD_PINS_D7 EXP1_04_PIN
+ #define ADC_KEYPAD_PIN PC0 // PIN6 of AUX1
+#endif
+
+#if HAS_MARLINUI_U8GLIB
+ #define BOARD_ST7920_DELAY_1 DELAY_NS(125)
+ #define BOARD_ST7920_DELAY_2 DELAY_NS(250)
+ #define BOARD_ST7920_DELAY_3 DELAY_NS(125)
+#endif
+
+// Remap SERVO0 PIN for BLTouch
+#if ENABLED(BLTOUCH_ON_EXP1)
+ // BLTouch connected to EXP1
+ #define BLTOUCH_PROBE_PIN EXP1_06_PIN
+ #define BLTOUCH_GND_PIN EXP1_04_PIN
+ #undef SERVO0_PIN
+ #define SERVO0_PIN EXP1_03_PIN
+#elif ENABLED(BLTOUCH_ON_EXP2)
+ // BLTouch connected to EXP2
+ #define BLTOUCH_PROBE_PIN EXP2_03_PIN
+ #define BLTOUCH_GND_PIN EXP2_04_PIN
+ #undef SERVO0_PIN
+ #define SERVO0_PIN EXP2_06_PIN
+#else
+ #define BLTOUCH_PROBE_PIN PB13
+#endif
diff --git a/Marlin/src/pins/stm32f1/pins_ZM3E4_V2_0.h b/Marlin/src/pins/stm32f1/pins_ZM3E4_V2_0.h
new file mode 100644
index 000000000000..5bbf43bbfac3
--- /dev/null
+++ b/Marlin/src/pins/stm32f1/pins_ZM3E4_V2_0.h
@@ -0,0 +1,328 @@
+/**
+ * Marlin 3D Printer Firmware
+ * Copyright (c) 2021 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 .
+ *
+ */
+#pragma once
+
+#include "env_validate.h"
+
+#define BOARD_INFO_NAME "ZONESTAR ZM3E4 V2.0"
+
+//#define DISABLE_DEBUG
+#define DISABLE_JTAG
+
+#if NO_EEPROM_SELECTED
+ #define FLASH_EEPROM_EMULATION
+ #define EEPROM_PAGE_SIZE (0x800) // 2KB
+ #define EEPROM_START_ADDRESS (0x08000000 + (STM32_FLASH_SIZE) * 1024 - 2 * EEPROM_PAGE_SIZE)
+ #define MARLIN_EEPROM_SIZE EEPROM_PAGE_SIZE // 2KB
+#endif
+
+//#define OPTION_DUALZ_DRIVE
+//#define OPTION_Z2_ENDSTOP
+//#define OPTION_REPEAT_PRINTING
+//#define SWITCH_EXTRUDER_SEQUENCE
+
+//=============================================================================
+// Zonestar ZM3E4 V2.0 (STM32F103VET6) board pin assignments
+//=============================================================================
+// PA0 | PB0 HEAT_1 | PC0 AUX_SDA
+// PA1 | PB1 FAN1 | PC1 TEMP_E1
+// PA2 HEAT_BED | PB2 BOOT1 | PC2 TEMP_E0
+// PA3 PWR_HOLD | PB3 SPI3_SCK | PC3 TEMP_BED
+// PA4 SD_CS | PB4 SPI3_MISO | PC4 SD_DETECT
+// PA5 SD_SCK | PB5 SPI3_MOSI | PC5 HEAT_0
+// PA6 SD_MISO | PB6 SERVO3 | PC6 E1_STEP
+// PA7 SD_MOSI | PB7 SERVO2 | PC7 E1_EN
+// PA8 X_DIR | PB8 FAN2/SERVO1 | PC8 FIL_RUNOUT_PIN
+// PA9 UART1_RX | PB9 SERVO0 | PC9 E0_DIR
+// PA10 UART1_TX | PB10 TX3 | PC10 E0_EN
+// PA11 USB_D- | PB11 RX3 | PC11 Z2_EN
+// PA12 USB_D+ | PB12 LED | PC12 Z2_STEP
+// PA13 SWD_SDO | PB13 Z1_MAX | PC13 X_MIN
+// PA14 SWD_SCK | PB14 Y_MAX | PC14 WIFI_RST
+// PA15 SPI3_CS | PB15 PWR_DET | PC15 WIFI_CS
+// PD0 Z2_DIR | PE0 Y_EN
+// PD1 Z2_MIN | PE1 Y_STEP
+// PD2 Z1_EN | PE2 Y_DIR
+// PD3 Z1_STEP | PE3 Y_MIN
+// PD4 Z1_DIR | PE4 X_DIR
+// PD5 WIFI_RXD | PE5 X_STEP
+// PD6 WIFI_TXD | PE6 X_EN
+// PD7 Z1_MIN | PE7 AUX_SCL
+// PD8 X_MAX | PE8 BTN_EN1
+// PD9 E3_DIR | PE9 LCD_SCK
+// PD10 E3_STEP | PE10 LCD_MOSI
+// PD11 E3_EN | PE11 BEEPER
+// PD12 E2_DIR | PE12 LCD_EN
+// PD13 E2_STEP | PE13 KILL
+// PD14 E2_EN | PE14 BTN_EN2
+// PD15 E1_DIR | PE15 BTN_ENC
+
+//=============================================================================
+// EXP1 connector
+// MARK I/O ZONESTAR_LCD12864 REPRAPDISCOUNT_LCD12864
+// 10 RS PE13 KILL BTN_ENC
+// 9 BP PE11 BEEP BEEP
+// 8 EN PE12 DOGLCD_CS LCDRS
+// 7 MOSI PE10 DOGLCD_SCK LCDE
+// 6 EN1 PE8 BTN_EN1 NC
+// 5 SCK PE9 DOGLCD_MOSI LCD4
+// 4 ENC PE15 BTN_ENC NC
+// 3 EN2 PE14 BTN_EN2 NC
+// 2 +5V
+// 1 GND
+
+#define EXP1_03_PIN PE14
+#define EXP1_04_PIN PE15
+#define EXP1_05_PIN PE9
+#define EXP1_06_PIN PE8
+#define EXP1_07_PIN PE10
+#define EXP1_08_PIN PE12
+#define EXP1_09_PIN PE11
+#define EXP1_10_PIN PE13
+
+// EXP2 connector
+// MARK I/O ZONESTAR_LCD12864 REPRAPDISCOUNT_LCD12864
+// 10 SDA PC0
+// 9 SCL PE7
+// 8 RX1 PA9 UART1_RX
+// 7 TX1 PA10 UART1_TX BTN_EN2
+// 6 CS3 PA15
+// 5 MISO3 PB4 BTN_EN1
+// 4 MOSI3 PB5 KILL
+// 3 SCK3 PB3
+// 2 +5V
+// 1 GND
+
+#define EXP2_03_PIN PB3
+#define EXP2_04_PIN PB5
+#define EXP2_05_PIN PB4
+#define EXP2_06_PIN PA15
+#define EXP2_07_PIN PA10
+#define EXP2_08_PIN PA9
+#define EXP2_09_PIN PE7
+#define EXP2_10_PIN PC0
+
+// AUX1 connector
+// 1 +5V
+// 2 GND
+// 3 RX3 PB11 UART3_RX
+// 4 TX3 PB10 UART3_TX
+// 5 SCL PE7
+// 6 SDA PC0
+
+// WiFi
+// 1 +5V
+// 2 GND
+// 3 WIFI_TXD PD5 UART2_RX
+// 4 WIFI_RXD PD6 UART2_TX
+// 5 WIFI_RST PC14
+// 6 WIFI_CS PC15
+//=============================================================================
+
+//
+// Servos
+//
+#define SERVO0_PIN PB9
+//#define SERVO1_PIN PB8
+#define SERVO2_PIN PB7
+#define SERVO3_PIN PB6
+
+//
+// Limit Switches
+//
+#define X_MIN_PIN PC13
+#define Y_MIN_PIN PE3
+#define Z_MIN_PIN PD7
+#define X_MAX_PIN PD8
+#define Y_MAX_PIN PB14
+#define Z_MAX_PIN PB13
+
+#ifdef OPTION_Z2_ENDSTOP
+ #define Z2_MIN_PIN PD1
+ #define Z2_MAX_PIN PB12
+#endif
+
+//
+// Steppers
+//
+#if ENABLED(COREXY)
+ #define X_ENABLE_PIN PE0
+ #define X_STEP_PIN PE1
+ #define X_DIR_PIN PE2
+
+ #define Y_ENABLE_PIN PE6
+ #define Y_STEP_PIN PE5
+ #define Y_DIR_PIN PE4
+#else
+ #define X_ENABLE_PIN PE6
+ #define X_STEP_PIN PE5
+ #define X_DIR_PIN PE4
+
+ #define Y_ENABLE_PIN PE0
+ #define Y_STEP_PIN PE1
+ #define Y_DIR_PIN PE2
+#endif
+
+#define Z_ENABLE_PIN PD2
+#define Z_STEP_PIN PD3
+#define Z_DIR_PIN PD4
+
+#ifdef OPTION_DUALZ_DRIVE
+ #define Z2_ENABLE_PIN PC11
+ #define Z2_STEP_PIN PC12
+ #define Z2_DIR_PIN PD0
+#endif
+
+#ifdef OPTION_REPEAT_PRINTING
+ #define REPRINT_STOP_PIN PD8 // X_MAX_PIN
+ #define FORWARD_PIN PA13
+ #define BACK_PIN PA14
+#endif
+
+#ifdef SWITCH_EXTRUDER_SEQUENCE
+ #define E3_ENABLE_PIN PC10
+ #define E3_STEP_PIN PA8
+ #define E3_DIR_PIN PC9
+
+ #define E2_STEP_PIN PC6
+ #define E2_DIR_PIN PD15
+ #define E2_ENABLE_PIN PC7
+
+ #define E1_STEP_PIN PD13
+ #define E1_DIR_PIN PD12
+ #define E1_ENABLE_PIN PD14
+
+ #define E0_STEP_PIN PD10
+ #define E0_DIR_PIN PD9
+ #define E0_ENABLE_PIN PD11
+#else
+ #define E0_ENABLE_PIN PC10
+ #define E0_STEP_PIN PA8
+ #define E0_DIR_PIN PC9
+
+ #define E1_STEP_PIN PC6
+ #define E1_DIR_PIN PD15
+ #define E1_ENABLE_PIN PC7
+
+ #define E2_STEP_PIN PD13
+ #define E2_DIR_PIN PD12
+ #define E2_ENABLE_PIN PD14
+
+ #define E3_STEP_PIN PD10
+ #define E3_DIR_PIN PD9
+ #define E3_ENABLE_PIN PD11
+#endif
+
+//
+// Temperature Sensors
+//
+#define TEMP_0_PIN PC2 // TH0
+//#define TEMP_1_PIN PC1 // TH1
+#define TEMP_BED_PIN PC3 // TB1
+
+//
+// Heaters
+//
+#define HEATER_0_PIN PC5 // HEATER0
+//#define HEATER_1_PIN PB0 // HEATER1
+#define HEATER_BED_PIN PA2 // HOT BED
+
+//
+// Fans
+//
+#define FAN_PIN PB1 // FAN1
+#define FAN1_PIN PB8 // FAN2
+
+//
+// Misc. Functions
+//
+//#define POWER_LOSS_PIN PB15
+#define LED_PIN PA0
+#define SUICIDE_PIN PA3
+#define FIL_RUNOUT_PIN PC8
+
+//
+// SD card
+//
+#define ENABLE_SPI1
+#define SD_DETECT_PIN PC4
+#define SD_SCK_PIN PA5
+#define SD_MISO_PIN PA6
+#define SD_MOSI_PIN PA7
+#define SD_SS_PIN PA4
+
+// WiFi Functions
+#define WIFI_RST PC15
+#define WIFI_EN PC14
+
+#if ENABLED(ZONESTAR_12864LCD)
+ #define LCDSCREEN_NAME "ZONESTAR LCD12864"
+ #define LCD_PINS_RS EXP1_08_PIN // 7 CS make sure for zonestar zm3e4!
+ #define LCD_PINS_ENABLE EXP1_05_PIN // 6 DATA make sure for zonestar zm3e4!
+ #define LCD_PINS_D4 EXP1_07_PIN // 8 SCK make sure for zonestar zm3e4!
+ #define BEEPER_PIN EXP1_09_PIN
+ #define KILL_PIN -1 // EXP1_10_PIN
+ #define BTN_EN1 EXP1_06_PIN
+ #define BTN_EN2 EXP1_03_PIN
+ #define BTN_ENC EXP1_04_PIN
+#elif ENABLED(REPRAP_DISCOUNT_FULL_GRAPHIC_SMART_CONTROLLER)
+ #define LCDSCREEN_NAME "REPRAPDISCOUNT LCD12864"
+ #define LCD_PINS_RS EXP2_08_PIN // 7 CS make sure for zonestar zm3e4!
+ #define LCD_PINS_ENABLE EXP2_05_PIN // 6 DATA make sure for zonestar zm3e4!
+ #define LCD_PINS_D4 EXP2_07_PIN // 8 SCK make sure for zonestar zm3e4!
+ #define BEEPER_PIN EXP2_10_PIN
+ #define KILL_PIN EXP2_09_PIN
+ #define BTN_EN1 EXP2_03_PIN
+ #define BTN_EN2 EXP2_06_PIN
+ #define BTN_ENC EXP2_04_PIN
+#elif ENABLED(ZONESTAR_DWIN_LCD)
+ // Connect to EXP2 connector
+ #define LCDSCREEN_NAME "ZONESTAR DWIN LCD"
+ #define BEEPER_PIN EXP2_06_PIN // PE11
+ #define KILL_PIN -1 // EXP1_10_PIN
+ #define BTN_EN2 EXP2_04_PIN // PE8
+ #define BTN_EN1 EXP2_03_PIN // PE14
+ #define BTN_ENC EXP2_05_PIN // PE15
+#endif
+
+#if HAS_MARLINUI_U8GLIB
+ #define BOARD_ST7920_DELAY_1 DELAY_NS(200) // Tclk_fall <200ns
+ #define BOARD_ST7920_DELAY_2 DELAY_NS(250) // Tdata_width >200ns
+ #define BOARD_ST7920_DELAY_3 DELAY_NS(200) // Tclk_rise <200ns
+#endif
+
+// Remap SERVO0 PIN for BLTouch
+#if ENABLED(BLTOUCH_ON_EXP1)
+ // BLTouch connected to EXP1
+ #define BLTOUCH_PROBE_PIN EXP1_06_PIN
+ #define BLTOUCH_GND_PIN EXP1_04_PIN
+ #undef SERVO0_PIN
+ #define SERVO0_PIN EXP1_03_PIN
+#elif ENABLED(BLTOUCH_ON_EXP2)
+ // BLTouch connected to EXP2
+ #define BLTOUCH_PROBE_PIN EXP2_03_PIN
+ #define BLTOUCH_GND_PIN EXP2_04_PIN
+ #undef SERVO0_PIN
+ #define SERVO0_PIN EXP2_06_PIN
+#else
+ #define BLTOUCH_PROBE_PIN PB13 // Z1_MAX
+#endif
diff --git a/Marlin/src/pins/stm32h7/pins_BTT_SKR_SE_BX.h b/Marlin/src/pins/stm32h7/pins_BTT_SKR_SE_BX.h
index c4349d182bf9..d85bbf7bed95 100644
--- a/Marlin/src/pins/stm32h7/pins_BTT_SKR_SE_BX.h
+++ b/Marlin/src/pins/stm32h7/pins_BTT_SKR_SE_BX.h
@@ -223,13 +223,16 @@
#define BTN_ENC PH8
#endif
+//
+// SD card
+//
#ifndef SDCARD_CONNECTION
#define SDCARD_CONNECTION ONBOARD
#endif
#define SOFTWARE_SPI
#define SDSS PA15
-#define SS_PIN SDSS
+#define SD_SS_PIN SDSS
#define SD_SCK_PIN PC10
#define SD_MISO_PIN PC11
#define SD_MOSI_PIN PC12
diff --git a/buildroot/share/PlatformIO/ldscripts/ZONESTAR_ZM3E_256K.ld b/buildroot/share/PlatformIO/ldscripts/ZONESTAR_ZM3E_256K.ld
new file mode 100644
index 000000000000..2404e7cac9bc
--- /dev/null
+++ b/buildroot/share/PlatformIO/ldscripts/ZONESTAR_ZM3E_256K.ld
@@ -0,0 +1,14 @@
+MEMORY
+{
+ ram (rwx) : ORIGIN = 0x20000000, LENGTH = 48K - 40
+ rom (rx) : ORIGIN = 0x08005000, LENGTH = 256K - 20K - 4K
+}
+
+/* Provide memory region aliases for common.inc */
+REGION_ALIAS("REGION_TEXT", rom);
+REGION_ALIAS("REGION_DATA", ram);
+REGION_ALIAS("REGION_BSS", ram);
+REGION_ALIAS("REGION_RODATA", rom);
+
+/* Let common.inc handle the real work. */
+INCLUDE common.inc
diff --git a/buildroot/share/PlatformIO/ldscripts/ZONESTAR_ZM3E_512K.ld b/buildroot/share/PlatformIO/ldscripts/ZONESTAR_ZM3E_512K.ld
new file mode 100644
index 000000000000..821c8ebbfe38
--- /dev/null
+++ b/buildroot/share/PlatformIO/ldscripts/ZONESTAR_ZM3E_512K.ld
@@ -0,0 +1,14 @@
+MEMORY
+{
+ ram (rwx) : ORIGIN = 0x20000000, LENGTH = 48K - 40
+ rom (rx) : ORIGIN = 0x08005000, LENGTH = 512K - 20K - 4K
+}
+
+/* Provide memory region aliases for common.inc */
+REGION_ALIAS("REGION_TEXT", rom);
+REGION_ALIAS("REGION_DATA", ram);
+REGION_ALIAS("REGION_BSS", ram);
+REGION_ALIAS("REGION_RODATA", rom);
+
+/* Let common.inc handle the real work. */
+INCLUDE common.inc
diff --git a/buildroot/tests/STM32F103RC_fysetc b/buildroot/tests/STM32F103RC_fysetc_maple
similarity index 100%
rename from buildroot/tests/STM32F103RC_fysetc
rename to buildroot/tests/STM32F103RC_fysetc_maple
diff --git a/buildroot/tests/STM32F103VE_ZM3E4V2_USB_maple b/buildroot/tests/STM32F103VE_ZM3E4V2_USB_maple
new file mode 100755
index 000000000000..8cbb84fb807d
--- /dev/null
+++ b/buildroot/tests/STM32F103VE_ZM3E4V2_USB_maple
@@ -0,0 +1,14 @@
+#!/usr/bin/env bash
+#
+# Build tests for STM32F103VE_ZM3E4V2_USB
+#
+
+# exit on first failure
+set -e
+
+restore_configs
+opt_set MOTHERBOARD BOARD_ZONESTAR_ZM3E4V2 SERIAL_PORT 1
+exec_test $1 $2 "Zonestar ZM3E4 V2.0" "$3"
+
+# cleanup
+restore_configs
diff --git a/buildroot/tests/jgaurora_a5s_a1 b/buildroot/tests/jgaurora_a5s_a1_maple
similarity index 100%
rename from buildroot/tests/jgaurora_a5s_a1
rename to buildroot/tests/jgaurora_a5s_a1_maple
diff --git a/buildroot/tests/mks_robin_lite b/buildroot/tests/mks_robin_lite_maple
similarity index 100%
rename from buildroot/tests/mks_robin_lite
rename to buildroot/tests/mks_robin_lite_maple
diff --git a/buildroot/tests/mks_robin_pro b/buildroot/tests/mks_robin_pro_maple
similarity index 100%
rename from buildroot/tests/mks_robin_pro
rename to buildroot/tests/mks_robin_pro_maple
diff --git a/ini/stm32f1-maple.ini b/ini/stm32f1-maple.ini
index 0258fb3b7cc7..c184dc247c4a 100644
--- a/ini/stm32f1-maple.ini
+++ b/ini/stm32f1-maple.ini
@@ -357,3 +357,46 @@ extra_scripts = ${common_stm32f1.extra_scripts}
buildroot/share/PlatformIO/scripts/custom_board.py
build_flags = ${common_stm32f1.build_flags}
-DDEBUG_LEVEL=0 -DSS_TIMER=4
+
+#
+# Zonestar ZM3E2 V1.0 / ZM3E4 V1.0 / ZM3E4 V2.0
+#
+# STM32F103RC_ZM3E2_USB_maple ........... RCT6 with 256K
+# STM32F103VC_ZM3E4_USB_maple ........... VCT6 with 256K
+# STM32F103VE_ZM3E4V2_USB_maple ......... VET6 with 512K
+#
+[ZONESTAR_ZM3E_maple]
+platform = ${common_stm32f1.platform}
+extends = common_stm32f1
+platform_packages = tool-stm32duino
+board_build.address = 0x08005000
+board_build.offset = 0x5000
+board_upload.maximum_size = 237568
+extra_scripts = ${common.extra_scripts}
+ buildroot/share/PlatformIO/scripts/custom_board.py
+ buildroot/share/PlatformIO/scripts/offset_and_rename.py
+build_flags = ${common_stm32f1.build_flags}
+ -D__STM32F1__=1 -DDEBUG_LEVEL=0 -DSS_TIMER=4 -DSERIAL_USB
+lib_deps = USBComposite for STM32F1@0.91
+lib_ignore = Adafruit NeoPixel, SPI, SailfishLCD, SailfishRGB_LED, SlowSoftI2CMaster, TMCStepper
+
+[env:STM32F103RC_ZM3E2_USB_maple]
+platform = ${ZONESTAR_ZM3E_maple.platform}
+extends = ZONESTAR_ZM3E_maple
+board = genericSTM32F103RC
+board_build.ldscript = ZONESTAR_ZM3E_256K.ld
+
+[env:STM32F103VC_ZM3E4_USB_maple]
+platform = ${ZONESTAR_ZM3E_maple.platform}
+extends = ZONESTAR_ZM3E_maple
+board = genericSTM32F103VC
+board_build.ldscript = ZONESTAR_ZM3E_256K.ld
+build_flags = ${ZONESTAR_ZM3E_maple.build_flags} -DTONE_TIMER=1 -DTONE_CHANNEL=2
+
+[env:STM32F103VE_ZM3E4V2_USB_maple]
+platform = ${ZONESTAR_ZM3E_maple.platform}
+extends = ZONESTAR_ZM3E_maple
+board = genericSTM32F103VE
+board_build.ldscript = ZONESTAR_ZM3E_512K.ld
+build_flags = ${ZONESTAR_ZM3E_maple.build_flags} -DTONE_TIMER=1 -DTONE_CHANNEL=2
+board_upload.maximum_size = 499712
diff --git a/ini/stm32f1.ini b/ini/stm32f1.ini
index 1185e8f84d8a..d03898a12ee1 100644
--- a/ini/stm32f1.ini
+++ b/ini/stm32f1.ini
@@ -374,3 +374,43 @@ extra_scripts = ${stm32_variant.extra_scripts}
platform = ${common_stm32.platform}
extends = env:chitu_f103
build_flags = ${env:chitu_f103.build_flags} -DCHITU_V5_Z_MIN_BUGFIX
+
+#
+# Zonestar ZM3E2 V1.0 / ZM3E4 V1.0 / ZM3E4 V2.0
+#
+# STM32F103RC_ZM3E2_USB ........... RCT6 with 256K
+# STM32F103VC_ZM3E4_USB ........... VCT6 with 256K
+# STM32F103VE_ZM3E4V2_USB ......... VET6 with 512K
+#
+[ZONESTAR_ZM3E]
+platform = ${common_stm32.platform}
+extends = stm32_variant
+platform_packages = ${stm_flash_drive.platform_packages}
+board_upload.offset_address = 0x08005000
+board_build.offset = 0x5000
+board_upload.maximum_size = 237568
+extra_scripts = ${stm32_variant.extra_scripts}
+build_flags = ${common_stm32.build_flags}
+ -DSS_TIMER=4 -DTIMER_SERVO=TIM5 -DUSE_USB_FS -DUSBD_IRQ_PRIO=5 -DUSBD_IRQ_SUBPRIO=6 -DUSBD_USE_CDC_MSC
+build_unflags = ${stm32_variant.build_unflags} -DUSBD_USE_CDC
+
+[env:STM32F103RC_ZM3E2_USB]
+platform = ${ZONESTAR_ZM3E.platform}
+extends = ZONESTAR_ZM3E
+board = genericSTM32F103RC
+board_build.variant = MARLIN_F103Rx
+
+[env:STM32F103VC_ZM3E4_USB]
+platform = ${ZONESTAR_ZM3E.platform}
+extends = ZONESTAR_ZM3E
+board = genericSTM32F103VC
+board_build.variant = MARLIN_F103Vx
+build_flags = ${ZONESTAR_ZM3E.build_flags} -DTIMER_TONE=1
+
+[env:STM32F103VE_ZM3E4V2_USB]
+platform = ${ZONESTAR_ZM3E.platform}
+extends = ZONESTAR_ZM3E
+board = genericSTM32F103VE
+board_build.variant = MARLIN_F103Vx
+build_flags = ${ZONESTAR_ZM3E.build_flags} -DTIMER_TONE=1
+board_upload.maximum_size = 499712