Home Automation System Via SMS

Abstract

The Home Automation System Activated via SMS is designed to provide a convenient and remote - controlled solution for managing household electrical appliances such as lights and fans. The system utilizes an Arduino Uno microcontroller, which processes SMS commands received via a GSM modem to control the appliances. The power supply is derived from an AC mains source (220V) , which is stepped down to 12V AC using a step - down transformer and further converted to a regulated 5V DC supply through a bridge rectifier, a 470µF capacitive filter and a 7805 voltage regulator to power the micro-controller. A 16x2 LCD display provides real - time status updates on appliance operation. Upon receiving an SMS command, the GSM modem de-codes the message and sends the corresponding instruction to the Arduino, which activates or deactivates the connected appliances. This system offers an efficient, user-friendly, and cost-effective approach to home automation, allowing users to remotely control their home environment from any location via mobile communication. The proposed system enhances convenience, energy efficiency, and security, making it suitable for the residential and commercial.