一个使用超声原理制作单片机的避障小车系统基于atmage16,有小车实物图，电路原理图，源代码。制作简单，易上手。-Car system based on the use of ultrasound principle of making MCU obstacle avoidance atmage16, there are trolley physical map, circuit schematics, source code. Create a simple, easy to use.