Automatic Nightlight
Approx construction cost US$10
This simple nightlight starter project is switched on simply by tapping on the case, or gently clapping one’s hands close to the unit. The low power bulb then switches on for approximately five minutes, but it can be switched off at any time by operating a Reset button on the top of the case.
The unit was primarily designed with children in mind, but it could obviously be a useful gadget for adults as well, particularly disabled people. It is battery powered and is therefore safe for use by small children. The simple circuit and lack of mains power also makes this project suitable for construction by complete beginners.
More details on this construction project can be found in the June 2000 issue of EPE Online, the world's first web-delivered electronics and computing hobbyist magazine.
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