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 ...

M y adventures of building a smart home on a shoestring budget are taking an interesting turn. It turns out that I don’t need ...

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 ...

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 ...

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 ...

MIT researchers have created a new underwater sensor and communication system that doesn’t require batteries, and barely uses any power at all. This could help set up an underwater Internet of Things, ...