| Summary: | This report presents a low-power smoke detector and monitoring system using star topology for IoT applications. The drawback of the conventional smoke detector systems are commonly expensive and cover a short distance. Thus, the proposed design aims to develop a cost-effective system, compact design, expandable, simple installation, and broader coverage area. In the proposed system, smoke detectors are connected to a centralized system using ESP8266-01 and NodeMcu WiFi modules. The low-powered smoke detector nodes sense smoke and activate their wireless module by sending high signals to the central system and logged into the cloud database using the Thingspeak website. The nodes are battery-operated and wirelessly connected. The system used a low power mode to minimize the power consumption at the nodes. The system had successfully worked in low power mode and communicate with the central unit. It also successfully worked with an online database for monitoring. ©2021 IEEE
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