The rapid advancement of the Internet of Things (IoT) has enabled the development of smart environments that enhance comfort, efficiency, and security in daily life. Home automation is one of the most significant applications of IoT, allowing users to monitor and control household appliances remotely through the internet. This paper presents an IoT-based home automation system that enables users to control home appliances using voice commands.

The proposed system integrates voice recognition technology with a microcontroller-based automation system to provide a convenient and user-friendly interface. Voice commands given by the user through a smartphone or smart speaker using Google Assistant are processed and transmitted through a cloud platform to the microcontroller, such as NodeMCU ESP8266. The microcontroller then controls electrical appliances through a relay module based on the received commands.