LINUSBot - Line Follower Robot using Arduino

If the robot is positioned on the black line, it will continue moving forward. However, if it veers off the line and enters a white area, it will assess whether to correct its path to the left or right, allowing it to return to the black line. The sensors employed for this task are the Pololu array infrared sensors, also known as reflectance sensors, specifically the QTRx8RC model, which consists of eight sensors (only five of which are utilized) QRE1113GR. This array features a digital output and can be easily controlled using the appropriate Pololu library to determine the line's position in relation to the sensors.

The robot's navigation system utilizes the QTRx8RC infrared sensor array to detect the presence of a black line on the ground. The sensors function by emitting infrared light and measuring the reflected light to distinguish between the black line and the white surface. When the robot is aligned with the black line, the sensors will register high reflectance from the black surface, allowing the robot to proceed forward without corrective action.

When the robot deviates from the black line and encounters a white area, the sensors will detect a significant drop in reflectance. The robot's control algorithm then analyzes the readings from the sensors to determine the direction of corrective action required. If the sensors on one side (e.g., left) detect a white surface while those on the other side (e.g., right) still detect black, the robot will steer towards the side with the higher reflectance to realign itself with the black line.

The QTRx8RC sensor array consists of eight individual sensors, but in this application, only five sensors are actively used, specifically the QRE1113GR models. This selection allows for a compact design while maintaining effective line detection capabilities. The digital output of these sensors simplifies integration with microcontrollers, enabling rapid processing of sensor data. The Pololu library provides pre-written functions to facilitate sensor management, allowing for straightforward implementation of line-following algorithms.

The overall design ensures that the robot can navigate effectively along predefined paths, making it suitable for various applications, including educational projects, automated delivery systems, and robotic competitions. The combination of reliable sensor technology and efficient control algorithms contributes to the robot's ability to maintain its course with minimal deviation.In case the robot being on the black line, it will always go ahead, and in the case of out of line and fall into a white area, it will determine whether to correct to the left or right, and thus remain on the black line. The sensors that will be used is the array infrared sensor Pololu (also called reflectance sensors) QTRx8RC, that consists of ei

ght sensors (only five are used) QRE1113GR. This array has a digital output and can easily be managed using the appropriate library of Pololu, for determine the position of the line relative to the sensors. 🔗 External reference