Development of Smart Switch Device for Home Security and Energy Saving

The need for effective security in residential landscapes and the reduction of energy consumption in connection with home management activities have led to a growing interest in the field of smart home technology. Smart home is an emerging field of technology transforming how people live and interact with their homes. This research develops a smart home automation system with a microcontroller to enhance energy efficiency, safety, and convenience through wireless control of household appliance operations. The system employs two modes of control: manual and automatic. The manual mode offers control and monitoring capabilities through a web application, accessible globally. The automatic mode provides security alerts and intelligent appliance control, minimizing the need for human intervention. The effectiveness of integrating a microcontroller with various sensors and relays for home automation is demonstrated, with a Digital Humidity and Temperature (DHT11) sensor and a Metal Oxide Semiconductor (MQ-5) gas sensor performing reliably with an accuracy rate of nearly 90%, and the light-dependent resistor (LDR) achieving a success rate of over 89%. The energy saving and safety achieved by applying the developed smart home automation system in this study demonstrate the viability of microcontroller-based smart home solutions