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Floods are natural disasters that frequently lead to significant losses, especially in high-risk areas like equipment shelters. Consequently, an IoT-based flood detection system is essential, utilizing NodeMCU ESP8266 and ultrasonic sensors. The ultrasonic sensors measure water height in equipment shelters by emitting ultrasonic signals towards the water surface, measuring bounce-back time, and calculating water height. Upon reaching a predefined threshold, the NodeMCU sends data via WiFi to a server to activate a water pump. Additionally, there is an air quality monitoring device employing ESP8266, HC-SR04 sensor, 16x2 LCD, buzzer, Arduino IDE, and Blynk. This tool aids in monitoring equipment shelter water levels through online accessible Blynk.
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