I hope you have a clear idea of what these two colors are, but unfortunatelly your robot don’t. So, next step is defining what it is black and what it is white.
We want to follow the line where there is a 50% of white and a 50% of black. No, serious, we don’t follow the line but its border in what it is called left-hand approach. Right? Well, first thing that we need to understand is that we don’t want to follow the line ( wtf?! )… We have a thick black line on a white surface and we want our robot to move along the line following it in the fastest possible way. It is quite important to understand the line following problem first. So it may work too on yours unless it has even less contrast than mine. My floor is done of marble that it is white and brown at times and even with that it works. You don’t need a closed loop ( although it is a good idea to do it in that way ). I have used a black tape and with the finger I have sticked it to the floor creating a continuous path that the robot will follow. If you happen to have the Mindstorms NXT 2.0 it has a mat with a big elipse-like line that works great for this tasks.īut if you don’t just do like me. But before start coding, we need the line that the robot will follow. Building your playground for line following Let me explain how we get to the “best” solution with a serie of intermediate steps that will help you understand it better. Whatever you build, just try to keep the distance between wheels to a minimum… because the bigger the distance, the harder for the robot to follow the turns on the line. Or base it on one of the LEGO Education models…
Robotc mindstorms download#
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.
Robotc mindstorms how to#
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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