Flight controller with ESCs in one. The basis of the FC is an F411 processor. 2 UARTs are available for connecting an RC receiver and a video transmitter. The board is unique with its external USB connector, which is on the cables and can be placed on the frame in a well-accessible place. This is especially useful for Cinewhoops and freestyle drones. The motors are driven by a 25A ESC with BlHeli_S firmware.