小车的循迹控件代码，实现小车的黑白线的循迹，小车能够实现速度的调节，能够平稳的实现循迹功能。-Car of the tracking control code, to achieve the black and white line car tracking, car can achieve speeds of adjustment, to achieve smooth tracking function.

四驱DYI竞赛小车驱动源代码，用89c51单片机控制的 用tcrt5000红外反射式光电传感器寻迹-Four-wheel drive the DYI competition car driver source code control with 89c51 microcontroller with tcrt5000 infrared reflective photoelectric sensor tracking

一个关于小车循迹，转弯，画圆和避障的源代码，非常实用。-About a car tracking, turn, draw circles and obstacle avoidance of the source code, very practical.