LearnOBots got together and worked on a few different electronics projects. The first is an LED matrix that eleven-year-old Daniyal brought to life using Arduino.

As the water rises it completes the circuit, illuminating the LED. [Raikut] is conservation minded and built a buzzer circuit which is activated by the LED indicating the highest water level.

Water level sensors serve an important purpose in rivers, warning of floods and unsafe recreational conditions. A new one is claimed to be not only more robust and reliable than others, but also ...

A low-cost (~$100), do-it-yourself (DIY) ultrasonic water level sensor/datalogger has been designed, constructed, and tested for use in education, citizen/community science, and research settings. The ...

Liquid level sensor works with simple electronics Researchers at Yokohama National University have created a liquid-based tilt sensor that only needs simple interface electronics – some 10MΩ resistors ...