Line Follower Robot (LFR) is a simple autonomously guided robot that follows a line drawn on the ground to either detect a dark line on a white surface or a white line on a dark. The LFR is quite an interesting project to work on! In this tutorial, we will learn how to build a black line follower robot using Arduino Uno and some easily accessible components. Sounds intersting? Let's get started. You can see the demonstration video of the Arduino Line Following robot on YouTube.