light

LEDs light the Sistine Chapel

LEDs light the Sistine Chapel

The Sistine Chapel is now lit by LEDs, spectrally matched to excite the pigments used by Michelangelo, Botticelli and other artists working 500 hundred years ago. Since the 1980s, the chapel has been lit from outside through its 12 windows by a mixture of 150W spotlights and 1kW halogen projectors – 66kW in total, according […]

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Night Light Saver V3.2 PIC12C508

Night Light Saver V3.2 (PIC12C508)

Introduction It’s time for 8-pin microcontroller Microchip PIC12C508, the SAVER V3.2, my latest design of a device that turns a night light on and off everyday. The circuit uses only a PIC12C508 8-pin CMOS micontroller and a small triac, MAC97A6. The Saver V3.2 also demonstrates the use PCW PIC C Compiler.   Circuit Description The

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Emergency Vehicle LED Light

Emergency Vehicle LED Light

Described here is a low-component count Emergency Vehicle LED Light circuit which can be used for capturing the attention of (or warning) drivers and pedestrians. These type of lighting gadgets kindle an instant response that makes people look up and pay attention -an important consideration when a matter of moments can mean life or death

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Arduino controlled light dimmer

Arduino controlled light dimmer

WARNING: Some people try to build this with an optocoupler with zerocrossing coz ‘that is better’ right? Some are even told in electronics shops it is better to use such an optocoupler. WRONG. This will only work with a random fire optocoupler: NOT igniting at zerocrossing is the principle of this dimmer. Switching an AC

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