side – by – side so that whenever they come in to proximity of a reflective surface, the light emitted by IR LED will be detected by Photo diode. For line detection logic, we used two IR Sensors, which consists of IR LED and Photodiode. The detailed working is explained here.Īs mentioned in the block diagram, we need sensors to detect the line. The working of the project is pretty simple: detect the black line on the surface and move along that line. In this project, we have designed an Arduino based Line Follower Robot. These motors provide more torque than normal motors and can be used for carrying some load as well. Motors (Geared Motors): We have used two geared motors at the rear of the line follower robot. Hence, choose the appropriate power supply which is sufficient for all the components including the motors. Note: The power supply to the motors must be given from the motor driver IC. It receives signals from Arduino based on the information from the IR Sensors. Motor Driver (L293D): L293D Motor Driver IC is used in this project to drive the motors of the robot. The data from the sensors (IR Sensors) will be given to Arduino and it gives corresponding signals to the Motor Driver IC. The working of the IR Sensor and its scope in this project will be explained in the actual working of the Line Follower Robot.Ĭontroller (Arduino UNO): Arduino UNO is the main controller in the project. In case you do not have one, you can make your own sensor using the following circuit. It consists of an IR LED and a Photo diode and some other components like comparator, LED etc.Īs mentioned earlier, we have used a pre – assembled IR Sensor. Sensors (IR Sensor): We have used IR Sensor Module as the line detecting sensor for the project. The following image shows the block diagram for line follower robot. The line follower robot built in this project is divided in to 4 blocks. If you do not have this, we have explained how to build one yourself. Note: We have used a prebuilt IR Sensor Module that consists of an IR LED and a Photo Diode. Black Tape (Electrical Insulation Tape). ![]() We have selected this project so that the students can understand how the IR module works and how it can be interfaced with Arduino uno. Let’s assume if the car senses the line in left it turns the car to the left and if the line is sensed to the right the mirco controller turns the car right. The line follower basically has two IR sensor these are embedded on the chassis such that it senses the line on both the side (Left and Right side in the front ) and passes the signal to microcontroller which accordingly drives the robo car. So enjoy building this quick and easy line follower. The technology now allows you to build a line follower in just under 10 minutes if you have the parts for it. Line followers are one of the most prominent kinds of Robo cars. ![]() white line on a black surface) is also possible. Usually, the visual line is the path which is followed by the line follower robot and it will be a black line on a white surface but the other way (i.e. ![]() A Line Follower Robot, as the name suggests, is an Auto Guided Vehicle, which follow a visual line embedded on the floor.
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