This circuit shows how to use an ordinary LED as a light sensor. It makes use of the photovoltaic voltage developed across the LED when it is exposed to light. LEDs are cheaper than photodiodes and ...

Conor started life in journalism at Digital Spy as a technology reporter, covering everything from Tim Cook's hypnotic dancing to the latest phone launches, before moving to Wareable Media Group in ...

Originally hailing from Troy, Ohio, Ry Crist is a writer, a text-based adventure connoisseur, a lover of terrible movies and an enthusiastic yet mediocre cook. A CNET editor from 2013 to 2024, Ry's ...

When Durham City Council members switched thousands of street lights to energy-efficient bulbs, they were thinking about the environment and public safety. But some residents say the new lights are so ...

We independently review everything we recommend. When you buy through our links, we may earn a commission. Learn more› By Thom Dunn Thom Dunn is a writer focusing on home heating and cooling. He once ...

Motion sensor lights offer secure access and easy movement, both indoors and outdoors Whether you're looking to brighten your pathways or secure your living spaces, our top picks promise to deliver ...