diff --git a/src/main/target/STM32F405/config/ALIENFLIGHTNGF4.config b/src/main/target/STM32F405/config/ALIENFLIGHTNGF4.config
new file mode 100644
index 0000000000..fc002d0d98
--- /dev/null
+++ b/src/main/target/STM32F405/config/ALIENFLIGHTNGF4.config
@@ -0,0 +1,121 @@
+# Name: ALIENFLIGHTNGF4
+# Description: ALIENFLIGHTNGF4 Standard target configuration
+
+defaults nosave
+
+# Basic I/O
+resource LED 1 C12
+resource LED 2 D02
+resource BEEPER 1 C13
+set beeper_inversion = ON
+set beeper_od = OFF
+
+# Buses
+resource I2C_SCL 1 B06
+resource I2C_SDA 1 B07
+
+resource SPI_SCK 1 A05
+resource SPI_MISO 1 A06
+resource SPI_MOSI 1 A07
+
+resource SPI_SCK 2 B13
+resource SPI_MISO 2 C02
+resource SPI_MOSI 2 C03
+
+resource SPI_SCK 3 B03
+resource SPI_MISO 3 B04
+resource SPI_MOSI 3 B05
+
+# Acc/gyro
+resource GYRO_CS 1 A04
+resource GYRO_EXTI 1 C14
+set gyro_1_bustype = SPI
+set gyro_1_spibus = 1
+set gyro_1_sensor_align = CW270
+
+# Compass
+set mag_bustype = I2C
+set mag_i2c_device = 1
+set align_mag = CW180FLIP
+
+# Baro
+set baro_bustype = I2C
+set baro_i2c_device = 1
+
+# SDCard
+resource SDCARD_CS 1 B10
+resource SDCARD_DETECT 1 B11
+set sdcard_detect_inverted = ON
+set sdcard_mode = SPI
+set sdcard_spi_bus = 2
+
+# SPI Flash
+resource FLASH_CS 1 B12
+set flash_spi_bus = 2
+
+# Timers
+# timer is zero origin
+timer A08 0
+timer B00 1
+timer B01 1
+timer B14 0
+timer B15 0
+timer B08 0
+timer B09 0
+timer A00 1
+timer A01 1
+timer C06 1
+timer C07 1
+timer C08 1
+timer C09 1
+resource MOTOR 1 B08
+resource MOTOR 2 B09
+resource MOTOR 3 A00
+resource MOTOR 4 A01
+resource MOTOR 5 C06
+resource MOTOR 6 C07
+resource MOTOR 7 C08
+resource MOTOR 8 C09
+resource PWM 1 A08
+resource PWM 2 B00
+resource PWM 3 B01
+resource PWM 4 B14
+resource PWM 5 B15
+resource LED_STRIP 1 B15
+resource PPM 1 A08
+
+# DMA stream conflict if burst mode is not used
+set dshot_burst = ON
+
+# Serial ports
+resource SERIAL_TX 1 A09
+resource SERIAL_RX 1 A10
+
+resource SERIAL_TX 2 A02
+resource SERIAL_RX 2 A03
+resource INVERTER 2 C15
+
+resource SERIAL_TX 4 C10
+resource SERIAL_RX 4 C11
+
+# ADC
+resource ADC_BATT 1 C00
+resource ADC_RSSI 1 C04
+resource ADC_CURR 1 C01
+resource ADC_EXT 1 C05
+
+# Remaining
+resource RX_BIND_PLUG 1 B02
+resource ESCSERIAL 1 A08
+
+# Some configs
+feature RX_SERIAL
+feature MOTOR_STOP
+map TAER1234
+serial 0 0 115200 57600 0 115200
+serial 1 64 115200 57600 0 115200
+serial 3 0 115200 57600 0 115200
+set serialrx_provider = SPEK2048
+set spektrum_sat_bind = 5
+set blackbox_device = SDCARD
+set battery_meter = ADC
diff --git a/src/main/target/STM32F405/target.c b/src/main/target/STM32F405/target.c
new file mode 100644
index 0000000000..3eba13786f
--- /dev/null
+++ b/src/main/target/STM32F405/target.c
@@ -0,0 +1,121 @@
+/*
+ * This file is part of Cleanflight and Betaflight.
+ *
+ * Cleanflight and Betaflight are free software. You can redistribute
+ * this software and/or modify this software 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.
+ *
+ * Cleanflight and Betaflight are distributed in the hope that they
+ * 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 software.
+ *
+ * If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <stdint.h>
+
+#include "platform.h"
+#include "drivers/io.h"
+#include "drivers/dma.h"
+
+#include "drivers/timer.h"
+#include "drivers/timer_def.h"
+
+const timerHardware_t timerHardware[USABLE_TIMER_CHANNEL_COUNT] = {
+// Auto-generated from 'timer_def.h'
+//PORTA
+    DEF_TIM(TIM2, CH1, PA0, TIM_USE_ANY, 0, 0),
+    DEF_TIM(TIM2, CH2, PA1, TIM_USE_ANY, 0, 0),
+    DEF_TIM(TIM2, CH3, PA2, TIM_USE_ANY, 0, 0),
+    DEF_TIM(TIM2, CH4, PA3, TIM_USE_ANY, 0, 0),
+    DEF_TIM(TIM2, CH1, PA5, TIM_USE_ANY, 0, 0),
+    DEF_TIM(TIM1, CH1N, PA7, TIM_USE_ANY, 0, 0),
+    DEF_TIM(TIM1, CH1, PA8, TIM_USE_ANY, 0, 0),
+    DEF_TIM(TIM1, CH2, PA9, TIM_USE_ANY, 0, 0),
+    DEF_TIM(TIM1, CH3, PA10, TIM_USE_ANY, 0, 0),
+    DEF_TIM(TIM1, CH1N, PA11, TIM_USE_ANY, 0, 0),
+    DEF_TIM(TIM2, CH1, PA15, TIM_USE_ANY, 0, 0),
+
+    DEF_TIM(TIM5, CH1, PA0, TIM_USE_ANY, 0, 0),
+    DEF_TIM(TIM5, CH2, PA1, TIM_USE_ANY, 0, 0),
+    DEF_TIM(TIM5, CH3, PA2, TIM_USE_ANY, 0, 0),
+    DEF_TIM(TIM5, CH4, PA3, TIM_USE_ANY, 0, 0),
+    DEF_TIM(TIM3, CH1, PA6, TIM_USE_ANY, 0, 0),
+    DEF_TIM(TIM3, CH2, PA7, TIM_USE_ANY, 0, 0),
+
+    DEF_TIM(TIM9, CH1, PA2, TIM_USE_ANY, 0, 0),
+    DEF_TIM(TIM9, CH2, PA3, TIM_USE_ANY, 0, 0),
+    DEF_TIM(TIM8, CH1N, PA5, TIM_USE_ANY, 0, 0),
+    DEF_TIM(TIM8, CH1N, PA7, TIM_USE_ANY, 0, 0),
+
+    DEF_TIM(TIM13, CH1, PA6, TIM_USE_ANY, 0, 0),
+    DEF_TIM(TIM14, CH1, PA7, TIM_USE_ANY, 0, 0),
+
+//PORTB
+    DEF_TIM(TIM1, CH2N, PB0, TIM_USE_ANY, 0, 0),
+    DEF_TIM(TIM1, CH3N, PB1, TIM_USE_ANY, 0, 0),
+    DEF_TIM(TIM2, CH2, PB3, TIM_USE_ANY, 0, 0),
+    DEF_TIM(TIM2, CH3, PB10, TIM_USE_ANY, 0, 0),
+    DEF_TIM(TIM2, CH4, PB11, TIM_USE_ANY, 0, 0),
+    DEF_TIM(TIM1, CH1N, PB13, TIM_USE_ANY, 0, 0),
+    DEF_TIM(TIM1, CH2N, PB14, TIM_USE_ANY, 0, 0),
+    DEF_TIM(TIM1, CH3N, PB15, TIM_USE_ANY, 0, 0),
+
+    DEF_TIM(TIM3, CH3, PB0, TIM_USE_ANY, 0, 0),
+    DEF_TIM(TIM3, CH4, PB1, TIM_USE_ANY, 0, 0),
+    DEF_TIM(TIM3, CH1, PB4, TIM_USE_ANY, 0, 0),
+    DEF_TIM(TIM3, CH2, PB5, TIM_USE_ANY, 0, 0),
+    DEF_TIM(TIM4, CH1, PB6, TIM_USE_ANY, 0, 0),
+    DEF_TIM(TIM4, CH2, PB7, TIM_USE_ANY, 0, 0),
+    DEF_TIM(TIM4, CH3, PB8, TIM_USE_ANY, 0, 0),
+    DEF_TIM(TIM4, CH4, PB9, TIM_USE_ANY, 0, 0),
+
+    DEF_TIM(TIM8, CH2N, PB0, TIM_USE_ANY, 0, 0),
+    DEF_TIM(TIM8, CH3N, PB1, TIM_USE_ANY, 0, 0),
+    DEF_TIM(TIM10, CH1, PB8, TIM_USE_ANY, 0, 0),
+    DEF_TIM(TIM11, CH1, PB9, TIM_USE_ANY, 0, 0),
+    DEF_TIM(TIM8, CH2N, PB14, TIM_USE_ANY, 0, 0),
+    DEF_TIM(TIM8, CH3N, PB15, TIM_USE_ANY, 0, 0),
+
+    DEF_TIM(TIM12, CH1, PB14, TIM_USE_ANY, 0, 0),
+    DEF_TIM(TIM12, CH2, PB15, TIM_USE_ANY, 0, 0),
+
+//PORTC
+    DEF_TIM(TIM3, CH1, PC6, TIM_USE_ANY, 0, 0),
+    DEF_TIM(TIM3, CH2, PC7, TIM_USE_ANY, 0, 0),
+    DEF_TIM(TIM3, CH3, PC8, TIM_USE_ANY, 0, 0),
+    DEF_TIM(TIM3, CH4, PC9, TIM_USE_ANY, 0, 0),
+
+    DEF_TIM(TIM8, CH1, PC6, TIM_USE_ANY, 0, 0),
+    DEF_TIM(TIM8, CH2, PC7, TIM_USE_ANY, 0, 0),
+    DEF_TIM(TIM8, CH3, PC8, TIM_USE_ANY, 0, 0),
+    DEF_TIM(TIM8, CH4, PC9, TIM_USE_ANY, 0, 0),
+
+//PORTD
+    DEF_TIM(TIM4, CH1, PD12, TIM_USE_ANY, 0, 0),
+    DEF_TIM(TIM4, CH2, PD13, TIM_USE_ANY, 0, 0),
+    DEF_TIM(TIM4, CH3, PD14, TIM_USE_ANY, 0, 0),
+    DEF_TIM(TIM4, CH4, PD15, TIM_USE_ANY, 0, 0),
+
+//PORTE
+    DEF_TIM(TIM1, CH1N, PE8, TIM_USE_ANY, 0, 0),
+    DEF_TIM(TIM1, CH1, PE9, TIM_USE_ANY, 0, 0),
+    DEF_TIM(TIM1, CH2N, PE10, TIM_USE_ANY, 0, 0),
+    DEF_TIM(TIM1, CH2, PE11, TIM_USE_ANY, 0, 0),
+    DEF_TIM(TIM1, CH3N, PE12, TIM_USE_ANY, 0, 0),
+    DEF_TIM(TIM1, CH3, PE13, TIM_USE_ANY, 0, 0),
+    DEF_TIM(TIM1, CH4, PE14, TIM_USE_ANY, 0, 0),
+
+    DEF_TIM(TIM9, CH1, PE5, TIM_USE_ANY, 0, 0),
+    DEF_TIM(TIM9, CH2, PE6, TIM_USE_ANY, 0, 0),
+
+//PORTF
+    DEF_TIM(TIM10, CH1, PF6, TIM_USE_ANY, 0, 0),
+    DEF_TIM(TIM11, CH1, PF7, TIM_USE_ANY, 0, 0),
+};
diff --git a/src/main/target/STM32F405/target.h b/src/main/target/STM32F405/target.h
new file mode 100644
index 0000000000..7d8fe173dc
--- /dev/null
+++ b/src/main/target/STM32F405/target.h
@@ -0,0 +1,116 @@
+/*
+ * This file is part of Cleanflight and Betaflight.
+ *
+ * Cleanflight and Betaflight are free software. You can redistribute
+ * this software and/or modify this software 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.
+ *
+ * Cleanflight and Betaflight are distributed in the hope that they
+ * 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 software.
+ *
+ * If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#pragma once
+
+// Treat the target as generic, and expect manufacturer id / board name
+// to be supplied when the board is configured for the first time
+#define GENERIC_TARGET
+
+#define TARGET_BOARD_IDENTIFIER "S405"
+
+#define USBD_PRODUCT_STRING     "S405"
+
+#define USE_BEEPER
+
+// MPU interrupt
+#define USE_EXTI
+#define USE_MPU_DATA_READY_SIGNAL
+//#define DEBUG_MPU_DATA_READY_INTERRUPT
+#define USE_GYRO_EXTI
+
+#define USE_ACC
+#define USE_GYRO
+
+#define USE_ACC_MPU6050
+#define USE_GYRO_MPU6050
+#define USE_ACC_MPU6500
+#define USE_GYRO_MPU6500
+#define USE_ACC_SPI_MPU6500
+#define USE_GYRO_SPI_MPU6500
+#define USE_ACC_SPI_ICM20689
+#define USE_GYRO_SPI_ICM20689
+// Other USE_ACCs and USE_GYROs should follow
+
+#define USE_MAG
+#define USE_MAG_HMC5883
+#define USE_MAG_SPI_HMC5883
+#define USE_MAG_QMC5883
+#define USE_MAG_LIS3MDL
+#define USE_MAG_AK8963
+#define USE_MAG_SPI_AK8963
+
+#define USE_BARO
+#define USE_BARO_MS5611
+#define USE_BARO_SPI_MS5611
+#define USE_BARO_BMP280
+#define USE_BARO_SPI_BMP280
+#define USE_BARO_LPS
+#define USE_BARO_SPI_LPS
+
+#define USE_SDCARD
+#define USE_SDCARD_SPI
+
+#define USE_FLASHFS
+#define USE_FLASH_M25P16
+
+#define USE_MAX7456
+
+#define USE_I2C
+#define USE_I2C_DEVICE_1
+#define USE_I2C_DEVICE_2
+#define USE_I2C_DEVICE_3
+#define I2C_FULL_RECONFIGURABILITY
+
+#define USE_VCP
+
+#define USE_UART1
+#define USE_UART2
+#define USE_UART3
+#define USE_UART4
+#define USE_UART5
+#define USE_UART6
+#define USE_SOFTSERIAL1
+#define USE_SOFTSERIAL2
+#define USE_INVERTER
+#define SERIAL_PORT_COUNT       9
+
+#define USE_ESCSERIAL
+
+#define USE_SPI
+#define USE_SPI_DEVICE_1
+#define USE_SPI_DEVICE_2
+#define USE_SPI_DEVICE_3
+#define SPI_FULL_RECONFIGURABILITY
+
+#define USE_ADC
+
+#define USE_SERIAL_4WAY_BLHELI_INTERFACE
+
+#define TARGET_IO_PORTA 0xffff
+#define TARGET_IO_PORTB 0xffff
+#define TARGET_IO_PORTC 0xffff
+#define TARGET_IO_PORTD 0xffff
+#define TARGET_IO_PORTE 0xffff
+#define TARGET_IO_PORTF 0xffff
+
+#define USABLE_TIMER_CHANNEL_COUNT 70
+
+#define USE_TIMER_MGMT
diff --git a/src/main/target/STM32F405/target.mk b/src/main/target/STM32F405/target.mk
new file mode 100644
index 0000000000..4c85a12d43
--- /dev/null
+++ b/src/main/target/STM32F405/target.mk
@@ -0,0 +1,8 @@
+F405_TARGETS += $(TARGET)
+FEATURES       += SDCARD_SPI VCP ONBOARDFLASH
+
+TARGET_SRC = \
+	$(addprefix drivers/accgyro/,$(notdir $(wildcard $(SRC_DIR)/drivers/accgyro/*.c))) \
+	$(addprefix drivers/barometer/,$(notdir $(wildcard $(SRC_DIR)/drivers/barometer/*.c))) \
+	$(addprefix drivers/compass/,$(notdir $(wildcard $(SRC_DIR)/drivers/compass/*.c))) \
+	drivers/max7456.c