| Sure, you can easily buy an LED flashlight at the hardware store. But where's the fun in that? This DIY LED flashlight offers up to 78.8% ef...
All items tagged with DIY and light (4)
| Electronics, programming, making, open source, they invariably get so much better when you add LEDs. And since it's the season of celebrator...
| An LC display can be used as a readout for all kinds of useful information without using the PC monitor for that. This is not unusual anymor...
| The light barrier system described in this article allows accurate measurement of the absolute speed of model cars, planes and other moving...