SunFounder PiCar-S, Manual

Page: 67 / 85

SunFounder PiCar-S
3. The semidiameter of curves: more than 138mm. When the front wheels turn left or right 45 degrees, the
semidiameter of the path by which the car turns is equal to the wheelbase (the distance between the center
of the front wheels and rear wheels). The car won’t be able to turn and pass the curve smoothly if the
semidiameter of the curve is too small.
A track sample is shown as below (the original map file can be found under folder
map
in
github
):
Code Explanation of line_follower.py
Whole Work Flow
Considering the interference of negative environment factors, we need to calibrate the line follower sensor before
actual use.
1.8. Arming the Car! 63