第六届（2003年）全国大学生电子设计大赛：E题——简易智能电动车（其中，金属检测部分由于没买金属检测器，所以就使用外部中断0+壁障传感器代替，用手遮挡一次表示检测到一块金属……寻光源部分不是很准确，最简单的办法还是写一条指定的路线……）-The sixth (2003), the National Undergraduate Electronic Design Contest: E question- simple smart electric vehicles (including, metal detector part because they did not buy a metal detector, so I use an external interrupt 0+ barrier sensors instead of hand block once said detected a piece of metal ... look for the light source section is not very accurate, the easiest way to write a specified route ...)