This tutorial details the process
of building a line following robot. The robot can follow both black and white
lines. It uses a sensor array to sense the line and a PID control to follow the
line. With the help of a PID control the robot does not follow the line by oscillating
to the left and to the right like conventional line followers but follows the
line smoothly without wavering too much the left and right, conserving battery power while at the same time following
the line much more faster.
Here is a video of the robot
Specifications and features
Note: This robot is aimed at intermediate robot builders who have built a robot or two and played quite a bit with microcontrollers. Building this robot will be quite a tough for a beginner, so if you have not built a robot before, try building the $40 robot, the $50 robot or any of the simple robots in the members tutorials section before trying to build this robot. I write this note because I have been getting a lot of mails from people who are trying to build this robot, without prior experience in robotics and have got stuck somewhere and have no clue about what is wrong or how to proceed.