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Midnight Security Light

Most thefts happen after midnight hours when people enter the second phase of sleep called ‘paradoxical’ sleep. Here is an energy-saving cir...

This is the simple circuit of automatic emergency light. It is called dark dependent circuit. A 555 timer IC and LDR is used for this config...

When you step out of your brightly-lit house into the darkness, it takes a while for your vision to adjust. A solution to this problem is...

Here the simple traffic light controller which is could be used to educate kids rudiments of traffic light guidelines. The circuit utilizes ...

On many cars, the boot light will not go out until the lid is properly closed. It is all too easy when unloading the car, to leave the lid a...

This article is of interest only to readers whose bicycle lights are powered by a dynamo. The laws on bicycle lights in the United Kingdom a...

On my mountain bike I always used to have one of those well-known flashing LED lights from the high street shop. These often gave me trouble...

This circuit automatically turns on a night lamp when bedroom light is switched off. The lamp remains ‘on’ until the light sensor senses ...