How to make it We wanted our sensor to stay compact, so we used a soldering iron and sheathed wire for some of the internal circuitry.

There is a bewildering choice of water-level sensors out there - from bubblers to ultrasonic transducers - with not many comparative reviews available to make things clearer. Here is a guide to ...

A leak sensor is a quick and affordable way to identify potentially damaging water leaks.

Smart home automation is the ultimate life hack, in my humble opinion. Whether for efficiency, accessibility, nerding out, or just plain laziness, all you need are smart home devices and a little ...

How to make a sweat sensor for drugs Guidelines include how to deal with pesky interfering signals when making voltammetric sensors by Louisa Dalton, special to C&EN February 11, 2020 Credit: ACS ...

This door is mine, so I can explain how the “magic” works. Using the TSSP4P38 proximity sensor, I built a small device that activates the electric circuit to ring the doorbell when it senses anything ...

How do you send an automated alert to a security guard whenever anyone tries to climb a fence, but ignore anyone simply leaning on said chain link? How can a sensor pick up the presence of a Jeep ...

The iPad sensor from Occipital has new iOS apps that use 3D scanning to measure rooms, ship items, and even take next-gen family portraits.