![]() ![]() There are so many cheap IR sensors available online you can purchase any of them. So it is very easy to measure how bright the surface is which will make it easy for us to track the line. These reflected rays are sensed by the IR receiver and depending upon the received IR rays, the resistance of the receiver varies which will, in turn, varies the output voltage. Thus it is possible to sense the color of the surface where the robot is running by looking into the reflected IR rays. Darker the color is, more IR will be absorbed by the surface and lesser IR rays will be reflected back. Means, the brighter the color is, the more IR will be reflected back. When the IR rays hit a surface, some rays will be reflected back depending upon the color of the surface. IR LED always emits IR rays to the direction it is pointing to. This IR sensor mainly consists of an IR transmitter (IR LED) and an IR receiver. For this purpose, we will be using an IR (Infra Red) Sensor. So we need something that will ‘see’ the line and tell the line follower to follow the line or to turn around if it is going away from the line. You can use any Arduino Board for this project.Īs mentioned earlier, our line following robot will be following a black line in a white background. The Arduino Nano is the best option to get started with electronics and coding if this is your first experience with Arduino Platform. For our line following robot, I will be using Arduino UNO which is the most commonly used board. You all might be familiar with Arduino which is the most widely used and fastly evolving electronic platform with so many microcontroller boards and software. Get the Best Robot Chassis Online Arduino You can use foam board or aluminum sheet or wood piece for building the base. These are some of the best robot chassis available for you to build this project. For our project, I will be using a 12V LiPo Battery. The only thing you should keep in mind is, it should have enough space for Arduino, L293D Motor Driver, and a LIPO battery. The first thing to do is build a chassis for WiFi Robot using Arduino. The Chasis of the Arduino Line Follower Robot If you are an expert and familiar with these components you can skip this section and straight away jump to the tutorial and start building Arduino Line Follower. IR Sensor (Array Sensor or 2 Individual Sensors)īefore jumping into line following robot tutorial, let’s get familiarized with the components used.In this tutorial, we will discuss the working of an Arduino line following robot which will follow a black line in white background and take the correct turn whenever it reaches curves in its path. ![]() The problem is that the car just keeps spinning and that is because it is stuck in the function turnAround(). The current sensors I am working with is a wheel encoder(lm393), yellow standard motors, and IR emmiters and detectors in paralell(QTR-8RC).Ĭurrently I am having a problem where I have code to follow the line, and I have code to turn the car around 180 degrees by counting the encoder pulses once it exits the line. So currently I am trying to write code for an arduino car/robot to solve a maze made of black tape on white background. ![]()
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