This is the first chapter where you will be using sensors. Sensors allow a robot to react to its environment in some way, which allows the start of real robot-like behavior. We will be adding line sensors to our robot, and then creating line-sensing behavior, as seen in robots used in industries such as warehouses. Line sensing can be performed using hidden lines such as wires under a floor, but it's far easier to use visible lines. Visible lines can be detected using either a camera or simple optical sensors bouncing light off the floor below and detecting the level of light coming back.
In this chapter, we'll learn the following:
- How to attach line sensors to your robot and wire them to the Pi
- How to paint yourself a line follower test track
- How to write code to test sensors and tune them to see them working
- How to...