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A quadcopter is one type of micro aerial vehicle and also a type of intelligent robot. It was initially successfully self-made by aviation model enthusiasts, and later many automation manufacturers found that it can be used for a variety of purposes and actively produced and researched. It uses four rotors as the flight engine to perform aerial flight. Its size is small, light in weight, and can carry certain payloads, similar to unmanned aerial vehicles that can be carried and used. It has the ability to complete specific flight tasks in complex and dangerous environments.