A motor number setting method adopted by an electronic device including an MCU and multiple motors in series connection with a communication port of the MCU. When performing a setting procedure, the MCU obtains a motor amount of the multiple motors, and scans the communication port for obtaining a motor-number of each motor. Next, the MCU determines whether an amount of different motor-numbers equals the motor amount of the multiple motors. If the amount of different motor-numbers differs from the motor amount of the motors, the MCU sends a random numbering command to multiple motors having an identical motor-number so as to make these motors respectively performing a random numbering procedure for generating a new motor-number. Next, the MCU again scans the communication port until determining that the amount of the different motor-numbers equals the motor amount of the motors.

A motor number setting method adopted by an electronic device including an MCU and multiple motors in series connection with a communication port of the MCU. When performing a setting procedure, the MCU obtains a motor amount of the multiple motors, and scans the communication port for obtaining a motor-number of each motor. Next, the MCU determines whether an amount of different motor-numbers equals the motor amount of the multiple motors. If the amount of different motor-numbers differs from the motor amount of the motors, the MCU sends a random numbering command to multiple motors having an identical motor-number so as to make these motors respectively performing a random numbering procedure for generating a new motor-number. Next, the MCU again scans the communication port until determining that the amount of the different motor-numbers equals the motor amount of the motors.