Line Following Racing Car
Link to open source: https://github.com/KameshwarPandit9/Line-Following-Car/tree/main
Line follower racing car is an automated vehicle that follows a visual line embedded on the surface. This visual line is a path on which the line-follower racing car runs. Generally, it uses a black line on a white surface, or you can adjust it as a white line on a black surface.
Line follower racing car are used to assist the automated production process. They are also used in military applications, human assistance purposes, delivery services, etc.
The concept of the line follower racing car is related to light. Here, we use the behavior of light on the black-and-white surface. The white color reflects all the light that falls on it, whereas the black color absorbs the light.
In this line-follower racing car, we use IR transmitters and receivers (photodiodes). They are used to send and receive the lights. When IR rays fall on a white surface, they are reflected toward the IR receiver, generating some voltage changes.
Black surfaces absorb infrared radiation and do not reflect any of the rays that fall on them; therefore, no photons reach the infrared receiver.
In this project, when the IR sensor senses a white surface, an Arduino gets 1 (high) as input, and when it senses a black line, an Arduino gets 0 (low) as input. Based on these inputs, an Arduino Uno provides the proper output to control the bot.
Components Used in Line Follower Robot
Arduino Uno
IR sensor
L293D motor driver
BO motor
Wheels
Lithium-ion battery
Jumper cables
