In this project, I designed a simple water level monitoring system using an Arduino Uno and an ultrasonic sensor (HC-SR04) in 2021. The sensor was mounted at the top of a bucket by securing it with a scale to maintain alignment, allowing it to measure the real-time distance from the water surface to the sensor.

Based on the measured water level, different LEDs were programmed to blink, providing a visual indication of water height. For example, at lower water levels, one LED would blink; as the water level rose, additional LEDs would blink according to predefined thresholds.

Through this project, I gained hands-on experience in ultrasonic distance measurement, conditional programming, hardware interfacing, and real-time monitoring systems. It enhanced my understanding of IoT fundamentals and sensor-based automation.