Braia - Advanced Line-Follower Robot

Braia v3 is the latest iteration of a long-standing line of autonomous line-following robots developed by Tamandutech. As a third-generation robot, Braia has undergone multiple revisions and optimizations, each aimed at improving speed, control, and adaptability on competitive tracks. Unlike its successor, Semreh, which represents a more modern and refined approach to line-following robotics, Braia v3 stands as a testament to the iterative process of engineering and the lessons learned from previous versions.

The primary goal of Braia v3 was to develop a more compact and lightweight design compared to its predecessors. This design philosophy sought to enhance maneuverability and speed while reducing overall weight to improve acceleration and efficiency. However, extensive testing and real-world trials demonstrated that the reduction in size and weight introduced unforeseen challenges. Stability issues arose due to the lower mass, making the robot more susceptible to track irregularities and external disturbances. Additionally, the smaller form factor limited the space available for critical electronic components, leading to compromises in processing power, sensor placement, and battery capacity.

To address these limitations, we increased the chassis size using 3D printing and implemented a suction mechanism to enhance the normal force acting on the robot. This adjustment improved the robot's stability and grip on the track:

Braia v3 features a custom-designed PCB that integrates a high-performance microcontroller, advanced motor drivers, and precision sensor arrays to detect and respond to track markings. The robot utilizes high-speed DC motors paired with optimized PID control algorithms to achieve smooth and efficient navigation. Despite its compact structure, the team implemented structural reinforcements to counteract stability concerns while maintaining a balance between agility and robustness.

Although Braia v3 did not surpass the performance expectations set by its designers, the insights gained from its development directly influenced the creation of Semreh. The challenges faced with Braia’s lighter frame led to a reevaluation of design priorities, ultimately shaping a more stable and high-performance robotic platform for future competitions.

This project highlights the importance of iterative development in engineering, where each version serves as a learning experience that refines and advances the capabilities of autonomous robotic systems.