Most zooming flashlights have a moving bezel, which allows the user to move the head up and down to focus the beam. This is problematic for multiple reasons. First, the moving parts compromise ...

all turned down on the lathe to form the head of the flashlight. The head is made from three parts, each of which acts as a heat sink for the five 20-Watt CREE XHP70 LED modules. The LEDs are ...

With 10 separate components and 16 build steps, the DIY flashlight kit turns learning about kinetic energy and electronic components into a hands-on adventure. "The aim was to create a distinctive ...