You might think traffic light systems are fairly basic. After all, electric traffic signals first appeared all the way back in 1914. However, they have advanced significantly since their inception, ...

There are over four billion street lights in the world. Almost all of them are high-intensity discharge lights that use mercury vapor or some other toxic substance to create light. All of them require ...

Here is an interesting project circuit which is very useful in our real life. This circuit switches the street lights on detecting vehicle movement and remains off after fixed time.This can be used ...

When I first saw the isight for some reason I kept thinking it looked familiar in its design.<BR><BR>Sitting at a red light waiting for my light to turn green I noticed why... the isight looks exactly ...