I was thinking there must be a simple sensor that could tell me when the water level has fallen a set amount and automatically run the "fill pool" zone on the Rachio.

He decided it was time to build his own solution to this problem. What he ended up with was a water level sensor made from PVC pipe and a few other components. The physical assembly is pretty simple.

When interfacing with the real world, there are all kinds of sensors available which will readily communicate with your microcontroller of choice. Moisture, pH, humidity, temperature, location, lig… ...

Using an Arduino, a moisture sensor, an LED matrix, and a few other parts, dr.mcc's build monitors the moisture level in a pot of soil and then lets you know when the plant needs water by ...

Researchers from the Virginia Institute of Marine Science, city officials and various organizations are working together to improve how they gather information about water levels in some of the ...

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 ...

Different types of health sensors have a different level of difficulty, risk level, and production cost, Bachman said. The most difficult, risky, and expensive type of sensor to make are implantable ...