Design and Implementation of Autonomous Line Follower Robot Using Microcontroller

International Journal of Research and Scientific Innovation (IJRSI) | Volume V, Issue XI, November 2018 | ISSN 2321–2705

Design and Implementation of Autonomous Line Follower Robot Using Microcontroller

Sk Ebadattulla1, Anwesha Kar2, Tuhina Alam3, Nisha Sarkar4

 1Department-Mechanical Engineering, College of Engineering and Management, Kolaghat, West Bengal, India
2,3,4Department – Computer Science Engineering, College of Engineering and Management, Kolaghat, West Bengal, India

Abstract—This paper report to describes the technique for designing, controlling and improving our daily lives with the help of line follower (autonomous) robots.
In today’s busy world , these autonomous bots can save both time and energy by helping in industries where instead of employing a human operator we can set our desired tasks to the robot which can easily follow the repetitive path from source to destination and vice versa.
It also finds in application in everyday household work such as floor cleaning and painting the walls.
So here is a brief idea about what a line follower (autonomous) robot is:
It is microcontroller based autonomous robot which detects and follows a path that can be invisible magnetic field or a visible path indicated by black line on a white surface(or vice versa).
The system senses the line. This work is done by sensors – IR sensors. The IR sensors are mounted at the front end of the robot. The data from these sensors will be given to the microcontroller (Arduino board) which in turn sends the signal to the motor driver that in turn drives the motor of the robot based upon the information of IR sensors.
This system hence can be used in a safe, efficient, time-saving way in industries as well as for daily purposes.

Keywords—Microcontroller (Arduino UNO), Motor Driver (L293D), IR Sensors (3),DC Motors (2),Caster Wheel, Power Supply(9 volt).

I. INTRODUCTION

Line follower is a machine that follows a path. The path can be a black line on a white surface (or vice versa) or it can be invisible like magnetic field. In order to detect specific marks or lines, various schemes for sensing it are applied. The choice of the schemes depends upon sensing accuracy and flexibility. In industrial point of view lone following bots are used in semi to fully autonomous plants. The sensing of the line which it is following is to be done carefully so that the robot stays on course while constantly correcting its path using feedback mechanism there is a formation of closed loop system. Apart from following its line and path these robots should navigate junctions that is to decide which junction to follow and which it should not. This would require the robot to have 90 degrees turn. Sensor positioning also plays an important role optimizing the robots performance for the tasks mentioned before.

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