1、　　测试用的，就是小车倒着放，手去分别遮挡3路红外反射管，看2路电机运行，不需要下地跑。

2、　　下地能循迹黑线的，普通弯道。

3、　　小车2轮同速快速前进5秒，后退5秒。

4、　　小车2轮同速，慢速前进PWM50 ，中速前进75 ，快速前进PWM100 .

5、　　小车转圈，原地绕圈，一路电机前进，一路电机后退

6、　　小车拐小弯，一路电机速度不变，一路电机中速。

7、　　小车拐大弯，一路电机速度不变，一路电机慢速(或停止)。

-PMW interput

1, test, and is the car backwards up, hand to block the 3-way infrared reflectance were tubes, see 2-way motor run, run do not come down to earth. 2, Shimoji to tracking the black line, normal curve. 3, Car 2 at the same speed fast forward 5 seconds, 5 seconds back. 4, Car 2 at the same speed, slow progress PWM50 , 75　of medium-speed forward, fast forward PWM100 . 5, car circling, standing round and round, all the way forward motor, motor way back 6 car Shui small bend all the way constant motor speed, motor speed way. 7, Vehicles Shui greater curvature, along the same motor speed, motor way slow (or stop).