Maybe the best thing about this DIY project is its name: the Joule Thief. It’s a tiny LED flashlight that runs off dead batteries, eking out the last drops of voltage from a dead AA and throwing ...

That's because Popular Science recently published step-by-step instructions on how to create your very own flashlight that runs on dead batteries.

Instead, make this DIY light that can be powered by your phone line (which is generally still operational during a power outage).

So you think you've got a bright flashlight. You got nothing! This guy built his own, with 500 LEDs (which consume a shockingly low 50 watts when it's ...

Last year, we saw perhaps the brightest flashlight ever made, a DIY 1000W beast composed of ten different lights which can throw out a combined 90,000 lumens. How do you improve on that? You make ...

Touted as the world’s brightest DIY flashlight, this thing flaunts ten separate 100-watt LEDs that were mounted individually on a large heatsink.

Adafruit's DIY enhancement for Converse All-Stars takes customized kicks to a whole new level with the science of electroluminescence.