Smart Home Automation and Security

Abstract

The rapid advancement of Internet of Things (IoT) technology has paved the way for intelligent living environments that enhance convenience, security, and energy efficiency. A smart home integrates interconnected devices and automated systems to provide residents with real-time control and monitoring of household functions through smartphones or voice commands. This paper presents the design and implementation of a cost-effective smart home automation system using Arduino UNO as the central controller, alongside Wi-Fi and Bluetooth modules for seamless wireless communication. The proposed system enables remote control of home appliances such as lighting, fans, and door locks, while incorporating a PIR motion sensor and a gas leakage detection module to ensure resident safety. A temperature and humidity sensor continuously monitors environmental conditions, triggering automated responses when predefined thresholds are exceeded. The system interface was developed as a mobile application, providing users with an intuitive dashboard for real-time status updates and manual overrides. Experimental results demonstrate that the system achieves reliable response times, low power consumption, and stable connectivity under typical household conditions. The proposed smart home solution is scalable, user-friendly, and affordable, making it suitable for wide adoption in residential settings. This work contributes to the growing field of home automation by offering a practical, integrated approach to modern living.