DarwinFPV F411 15A AIO is a flight controller with ESCs in one. The board is especially suitable for smaller 2-3" drones powered by 1-3S Lipo batteries. The flight controller is based on the F411 processor combined with the MPU6500 gyro. The ECSs support current up to 15A and use the BlHeli_S firmware. The board also includes a 5V/2.5A BEC. The board has a 25.5x25.5mm M2 mounting holes.