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 ...
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