Since the beginning of time, viruses and bacteria have been a part of human life. Several types of sterilization systems were used to disinfect these viruses and bacteria all over the world. These methods were varied according to ethnics. With the advancement of technology, people used to find new disinfection methods. Ultraviolet, Ozone, Negative Ions were some of those methods that were used to disinfect bacteria and viruses. Most of the disinfector units, use one of the above-mentioned methods for disinfection. The aim is to carry out various experiments using ultraviolet light, ozone, and ionization under different environmental conditions to measure the efficiency of these disinfection methods

This paper presents a detailed description of a wall following an autonomous robot. It follows a wall on its both left and right. The robot used an Atmega 328P microcontroller as its brain. The wall follower receives input from Ultrasonic Distance sensors (HC-SR04). Mathematical computations are performed on this input, and a control signal is generated to control the robot's position. The pulse width modulation technique is used to control both motors with the help of a motor drive controller. The wall follower can be controlled from a remote location using WiFi technology.This document provides an overview of the Wall Following Robot and can be used as a quick reference for understanding.