If you need to measure a distance, it is tempting to reach for the ubiquitous ultrasonic module like an HC-SR04. These work well, and they are reasonably easy to use. However, they aren’t without ...

In a way, the magic of a soil moisture sensor’s functionality boils down to a simple RC circuit. But of course, in practice there is a bit more to it than that. [rbaron] explains exactly how ...

A cadence sensor is a compact cycling device that measures pedaling rate in RPMs to provide real-time feedback.

Breakthroughs, discoveries, and DIY tips sent every weekday. Terms of Service and Privacy Policy. You’ve probably seen them—sensors watching from the corners of ...

If your iPhone's sensors aren't working correctly, you may need to calibrate them. Here's how to calibrate an iPhone's brightness and motion sensors.

Smart lights are a great way to enhance home security. Being able to flip on the lights remotely or automatically, you can give the impression that someone is home and expose potential intruders. It’s ...

University of Iowa researchers have demonstrated in two new studies how a semiconductor material can be used to create ...

I like this report from Ford on how they keep self driving sensors clean. They have air blowers which can divert any insects heading for the sensor up and over it, and sprayers and other air blowers ...

We tested the Galaxy S10+'s ultrasonic fingerprint sensor against the Galaxy S9+ with dry, wet, and dirty fingers. I'm that 5G guy. I've actually been here for every "G." I've reviewed well over a ...