This is the F405 Mini BetaFlight flight controller from Matek. This mini flight controller is packed full of great features such as the 168MHz STM32F405 MCU and a 32K ICM20602 accelerometer/gyro (SPI) IMU. The F405-Mini also supports 32K gyro updates and 16K PID loops for super fast response times. It also comes with an in-built BetaFlight OSD and a blackbox. All this, packed into just 28x28mm. 

Key Features:

Specifications:

• MCU: 168MHz STM32F405
• IMU: 32K ICM20602 accelerometer/gyro (SPI)
• Support 32K Gyro update & 16K PID Loop
• OSD: BetaFlight OSD w/ AT7456E chip
• Blackbox: 32M(256) Flash
• VCP, UART1, UART2, UART3, UART4, UART5
• Built in inverter for SBUS input (UART2-RX)
• PPM/UART Shared: UART2-RX
• SoftSerial & Camera control supported on S5 & S6
• Battery Voltage Sensor: 1:10
• Current Sensor: No (FCHUB-A5 option)
• BEC 5V: No (FCHUB-A5 option)
• LDO 3.3V: Max.300mA for Spektrum RX
• I2C1 SDA & SCL available
• WS2812 Led Strip : Yes
• Beeper : Yes
• RSSI: Yes
• Dimensions: 28x28mm PCB with 20mm mounting holes

Features:

• 2 x LEDs for FC STATUS (Blue, Red)
• 6 x PWM / DShot outputs without conflict
• 5 x UARTs
• 1 x 14pin top mounted FFC Slot for FCHUB-A5 connection

Connection Diagrams: