Skystars F7 Mini + KM55A Mini is a powerful stack for racing and freestyle drones. The flight controller uses F7 processor, BMI270 gyro and BMP280 barometer. It has a 5V/2A and 10V/2A BEC for powering peripherals. The ESCs with the modern BlHeli_32 firmware support current up to 55A. ESCs use large 5x6mm mosfets protected by an aluminum heat sink.