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 ...

Motion sensor lights improve outdoor safety while saving on daily electricity costs.Solar-powered lights offer easy ...

LEDs are a wonderful technology. You put in a little bit of power, and you get out a wonderful amount of light. They’re efficient, cheap, and plentiful. We use them for so much! What you might not ...

Last time, I disassembled the “wireless” (i.e. six AA battery-powered), touch-activated member of Jasco’s GE Enbrighten LED-based lighting product line. This time, the “plug-in” motion-sensing variant ...

Need a cheap and easy way to deter intruders? For homeowners, outdoor lighting is a game changer for providing a line of sight on potential trepassers without running up costly energy bills. If you're ...

Should you have feedback on this article, please complete the fields below. Please indicate if your feedback is in the form of a letter to the editor that you wish to have published. If so, please be ...

This post is brought to you in paid partnership with AUVON. They plug directly into your outlets, add a warm backlit glow, and automatically adjust to your environment so you’re not wasting energy or ...

It's the perfect bedside companion ...