This paper introduces an innovative IoT-based smart home and security system employing the ESP 32 microcontroller for comprehensive automation and safety. The system integrates various sensors, including a rain sensor for precipitation detection, a fire sensor for early fire warnings, a gas sensor for identifying flammable gases like LPG, and a moisture sensor to manage garden irrigation based on humidity levels. Additionally, a unique QR code calling bell system with video capability allows visitors to initiate a video call notification on the homeowner’s mobile device, facilitating remote door access. Family members can bypass the video call for seamless entry, while vehicles equipped with a QR code scanner can trigger automatic door opening via servomotors. The notification board, featuring LEDs and buzzers, ensures immediate alert delivery. This paper explores the architecture, implementation, and benefits of the proposed system, emphasizing its contribution to enhanced home security and automation.
Prakash et al. (Mon,) studied this question.