循迹小车设计。。包括循迹、步进电机的程序。。用C语言代码，已验证过,Tracking car design. . Including the tracking, stepper motor program. . With the C language code has been verified

智能循迹小车设计报告，包含硬件连接和程序代码-The intelligent tracking car design report contains the hardware connection and program code

智能小车通过四路红外自动循迹并能够计算路程程序代码（四路探测）-Smart car by four infrared automatic tracking and the ability to calculate the distance code (four-probe)