Lights Needed Alert
Approx construction cost US$32
Ensure your car can be seen when driven in poor lighting conditions.
It seems that an increasing number of motorists are forgetting to switch on their car lights when they should. Can any of us, honestly, say that we have never done it ourselves? It may have something to do with better road lighting or to a more relaxed driving style. Whatever the reason or reasons, it is a hazard and driving without lights after lighting-up time runs the risk of causing an accident or prosecution.
Suppose you are driving along as the light level slowly falls. The road is well lit and you can see perfectly well. If you are not prompted, possibly by seeing other cars with their lights on, it is easy to forget to switch on your own. This circuit helps you to keep out of trouble by giving an audible signal when the ambient light falls to some pre-determined value.
More details on this construction project can be found in the November 2001 issue of EPE Online, the world's first web-delivered electronics and computing hobbyist magazine.
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