Introduction - If you have any usage issues, please Google them yourself
Encryption based on the use of uav flight control and overlay XS128 single-chip microcomputer testing flight control signal to determine the direction, using the ultrasonic detection distance in front of the distance, if the distance is less than the set, determine the direction and forward, is to cut off the flight control signal, switch to a fixed PWM, hover plane, if detection is backward direction, then switch to a flight control signal.