4. Three topologies for capacitive sensors: proximity sensor using a finger as the ground plate (a), liquid-level sensing with parallel sensor and ground (b), and material detection and analysis (c).

Recently I came across some non-contact liquid level sensors and gathered them out of curiosity. They have been available in the market for the past few years, but this time I was lucky enough to get ...

Here, the revived (and adaptable) circuitry based on CD4049UB provides single point liquid level detection via a TTL compatible ‘push pull’ output, but you can add more optical liquid level sensors to ...

Liquid cooling systems work by circulating a coolant, typically a mixture of water and glycol, through channels or plates embedded within or surrounding the battery cells.

The sensor shown here is essentially two plates mounted side-by-side, attached to an Arduino Nano using the Capacitor library which uses just two pins, one digital and one analog.

Compared to the free option of writing info on the storage bag, a pack of 20 sensors costs $9.99 (roughly $0.50 per sensor) while a pack of 48 sensors costs $19.99 (roughly $0.42 per sensor).

To meet these needs, Sensirion launched the SLD3x platform—a series of digital liquid flow sensors to combine flow measurement, miniature size, and compatibility with several therapies.