Here is a tested Arduino project that uses 3 sensor probes as water level indicator with 3 leds and one LCD display + a simple controller that turns on a motor when the water has reached the desired ...

Posted in Arduino Hacks Tagged arduino, parallax, ping, water sensor ← Speaker-mounted WAV Player For Street Performances Engine Hacks: Adding Fuel Injection To A Riding Lawnmower → ...

This is a simple arduino project for a soil moisture sensor that will light up a LED at a certain moisture level. It uses Arduino Duemilanove microcontroller board. Two wires placed in the soil pot ...

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 ...

I've just come across a no-name non-contact, high-precision 80 GHz mmWave radar sensor for liquid level detection with a 40m ...

Citation: "Scalable graphene sensor array for real-time toxins monitoring in flowing water." Maity et al, Nature Communications, July 13, 2023. Funding: Laboratory Directed Research and Development ...