步进电机控制机器人小车的设计与实现.其中机器人小车共三个轮子,用串口\继电器来实现步进电机的驱动,并且和上位机由串口进行通信-Stepper motor control robot car Design and Implementation. In which a total of three wheels of the robot car, using serial relays to achieve the stepper motor drive, and and the host comp