All items tagged with light and LED (96)

1-07-2013 | Color LED strips are now available at low cost in all sorts of types and sizes. With the controller circuit described here, you can set your...

3-01-2013 | Using only permanent magnets and a light source Japanese scientists have succeeded in controlling the motion of a magnetically levitating gr...

1-01-2013 | This Ring Light is an illumination source used with webcams, microscopes and photo cameras. It is mounted around the lens to provide an even...

1-12-2012 | 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...

1-07-2012 | Fitting a bike with a rear light that stays on even when stationary is both useful and interesting — especially when it uses a circuit as si...

1-07-2012 | Converting a traditonal bulb light on a bicycle to one that pumps 350 mA through a Cree XP-E LEE to produce 114 lumen.

1-03-2012 | Disappointed that he could not find a simple cheap DMX remote controller for a multi-coloured LED spotlight the author set about designing h...

1-11-2011 | With the help of just a handful of components you can create a blue flashing light for use in model ambulances or police cars. Two blue LEDs...

31-07-2011 | In a project named D-light a technology is developed to wirelessly transmit data using visible light instead of radio frequencies. Professor...

1-07-2011 | The circuit shown here is formed of nine inverting transistor amplifier stages connected in series with an LED connected between emitter and...