A line follower is a robot that is designed to follow a specific path or line. A line follower robot using an Arduino is a type of robot that is equipped with sensors that allow it to detect a line and follow it. The Arduino microcontroller is used to process the sensor data and control the robot’s movement. The robot’s movement is typically controlled by motors or wheels, which are connected to the Arduino and can be programmed to move in a certain direction based on the sensor data. Line follower robots are often used in educational settings as a way to teach students about robotics and programming. They can also be used in manufacturing or other industrial settings to automate tasks such as material handling or quality control.