Measuring the speed of a rotating object is a common requirement. Knowing the speed of table and ceiling fans, as well as kitchen appliances such as mixers and grinders, can often be useful. However, ...

There’s a long history of devices originally used for communication being made into computers, with relay switching circuits, vacuum tubes, and transistors being some well-known examples. In a smaller ...

Roger is a long-time tech journalist with many site credits including AppleInsider and Android Authority. His specialties include everything from Apple, Android, and Windows devices through to ...

Daniel Ansorregui has developed LightInk, an open-source solar-powered E-ink watch inspired by 90s solar digital watches. It ...

I wore the world's first HDR10 smart glasses TCL's new E Ink tablet beats the Remarkable and Kindle Anker's new charger is one of the most unique I've ever seen Best laptop cooling pads Best flip ...

Bitcoin’s creator has hidden behind the pseudonym Satoshi Nakamoto for 17 years. But a trail of clues buried deep in crypto lore led to a 55-year-old computer scientist named Adam Back.

May 2, 2026 • Motherhood in the U.S. is revered. Actual mothers? Not so much. So where's a bedraggled mom to turn when she feels overworked, overwhelmed, and underappreciated? Turns out, momfluencers ...

Fast becoming the mainstays of gamers and creative pros, 4K monitors are falling in price. But they're getting more complicated to buy. Here's how to shop for an ultra-high-definition (UHD) display, ...

A dramatic U.S. military rescue mission deep inside Iran hinged on a critical moment of verification: commanders asked a stranded Air Force colonel a question about his father, something only he could ...

After testing more than a dozen digital picture frames, these are the best for display quality, easy setup, and instant photo sharing. The second-generation HomePod smart speaker delivers fantastic ...

Whether you're a traveling exec, a gamer, or a graphic designer, a portable second monitor can add an extra dimension to your work or play. We've tested most of the major models. Check out our top ...

This project involves using an Arduino to measure distances using an ultrasonic sensor and controlling a buzzer and LED based on the measured distance. The provided Arduino code performs the following ...