World Journal of Engineering Research and Technology

Rahmot Ullah*, Kazi Wohiduzzaman, Md. Mahbub Anam Riyad, Md. Sazzadul Islam Sakib and Suhel Ahmed

ABSTRACT

Autonomous navigation is an important feature that allows a mobile robot to independently move from a point to another without an intervention from a human operator. Line Maze Solving Robot is a modified line follower robot used to find the shortest path in a maze. This paper presents the design and implementation of a Line Maze Solving Robot, an autonomous mobile robot capable of navigating through a maze to find the shortest path without human intervention. The robot utilizes a novel Short Path Finder algorithm, which operates in three distinct modes: search mode, short path mode, and path mode.To enhance performance, an improved PID-based motor speed controller is incorporated to regulate the robot’s speed and ensure accurate line-following behavior. Key components include infrared (IR) sensors for line detection, a microcontroller for data processing, a motor driver for controlling the DC motors, and an ultrasonic sensor for obstacle detection. Experimental results demonstrate the robot's ability to efficiently navigate from the starting point to the finish line while avoiding obstacles, effectively identifying and following the shortest route in the maze.

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