| This night light has two power sources: a solar cell with a peak output voltage of about 6 V, and a Li-Ion cell with a voltage between 3.7 V...
| This night light has two power sources: a solar cell with a peak output voltage of about 6 V, and a Li-Ion cell with a voltage between 3.7 V...
| While in the past we usually had to make do with a string of tiny, fragile light bulbs, which would flash at the most, now we can choose fro...
| Converting a traditonal bulb light on a bicycle to one that pumps 350 mA through a Cree XP-E LEE to produce 114 lumen.
| No need for a piggy-back board any more — the ATM18 module takes to the air to give you a whole heap of very useful information recorded dur...
| As Christmas approaches, rope-lights and fairy-lights are starting to appear in supermarkets everywhere. They’re ridiculously cheap, it’s tr...
| During the winter many people suffer from Seasonal Affective Disorder (SAD), which is commonly known as the winter blues. With the help of b...
| The circuit takes the ambient light level into account and only turns on the light when it becomes dark. The light is turned off when no cyc...
| One area that many model train enthusiasts have never been totally happy with is the lighting of coaches. Until now. The lighting controller...
| Here we present a 3D display of LEDs, each of which can be controlled individually.This magnificent cube has at its heart an Atmel AVR micro...
| Having treated himself to a new bicycle fitted out with all mod cons including a shiny hub dynamo, the author was looking forward to many mi...