Matek F405-STD BetaFlight STM32F405 Flight Controller Built-in OSD Inverter for RC Multirotor FPV Racing Drone Specification: Brand: Matek Systems Item name: Flight Control Board Size: 36x36mm Mounting hole: 30.5mm Weight: 7g MCU: 168MHz STM32F405RGT6 IMU: 32K ICM20602 gyro/accelerometer (SPI) Baro: BMP280 (I2C) OSD: BetaFlight OSD w/ AT7456E chip Blackbox: MicroSD card slot (SD/SDHC) VCP, UART1, UART2, UART3, UART4, UART5 Built in inverter for SBUS input (UART2-RX) PPM/UART Shared: UART2-RX SoftSerial on TX2, S5 or S6 optional Camera control on S6 or DAC optional Smartaudio & Tramp VTX protocol supported Battery Voltage Sensor: 1:10 Current Sensor: No (FCHUB-6S, FCHUB-VTX, FCHUB-W option) BEC 5V: No (FCHUB-6S, FCHUB-VTX, FCHUB-W option) LDO 3.3V: Max.300mA I2C1 SDA & SCL: Yes WS2812 Led Strip : Yes Beeper : Yes RSSI: Yes Features: 3x LEDs for FC STATUS (Blue, Red) and 3.3V indicator(Red) 6x PWM / DShot outputs without conflict 2x 2812LED outputs option 5x UARTs 1x Group of 5V/G/S1/S2/S3/S4 pads for 4in1 ESC Signal/GND 4x pairs of corner pads for ESC Signal/GND connections (DSHOT compatible) 1x pair I2C1 pads 1x Side-press button for BOOT(DFU) mode 1x 16pin bottom mounted FFC Slot for FCHUB-6S, FCHUB-VTX or FCHUB-W connection Package included: 1x flight control board 2x 0.5mm*16Pin 5cm Flexible Flat Cable 4x M3 Anti-vibration Standoffs