This is a simple IoT application built using Arduino UNO, that tracks the level of water within a container.

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Then as now, the goal of the build is to provide a highly visible level gauge for a large water tank that’s part of an irrigation system. The basic idea was to provide a way of switching a pump ...

The elevation was only 22 centimeters short of reaching Ambuklao’s normal high water level of 752 meters. Binga also had one gate remaining open as the dam’s elevation reached 574.86 meters ...

The monitor comes with a 10-foot smart sensor that monitors the water level in the sump area, a 6' Remote Leak Sensing Disc, and a 9-Volt battery that sounds an alarm if the power goes out.

Radio Amplification by Stimulated Emission of Radiation (RASER) may produce very narrow NMR lines, background-free NMR spectroscopy, and excitation-free sensing of chemical transformations.

Yet, rapid detection of LMMPs (1–10 μm) at the single-particle level within complex freshwater ... scattering effect from the membrane sensors. The membrane sensors achieve a detection limit of 1 μg/L ...

It is promising but elusive to use covalent organic frameworks (COFs)-based chromatic sensors for chemical tomography – or the 3D spatial mapping of chemical details within living systems.