Or base it on one of the LEGO Education models… You can download the instructions provided by LEGO. So first thing is build yourself a little robot much like Track3r, either with wheels or with tracks. The more sensors you have the better and faster the robot will be able to follow it. On this tutorial I will explain how to do line following with just one sensor. As you know, both Mindstorms and EV3 sets come with a little light sensor that it is able to get a reading of reflected light, apart of seeing colors. There are several ways of making a Line Follower, the one that I am going to explain you about is using the Light sensor. Line following is one of the most common problems on industrial robots, and it is one of the most useful applications because it allows the robot to move from one point to another to do tasks. The first thing you have thought about after unboxing your LEGO Mindstorms was building the first robot, and just after that you would love to make it follow lines, isn’t it? The easy way of learning how to built your own Line follower Robot using a PID Controller without any of the mathematical expressions that you will find on most tutorials.
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