On. Off. All by itself. Automatically switched light is convenient and saves energy in home entrances, drives, hallways, staircases and rooms that are used only briefly.

[Hazim] wrote in to tell us about his project that teaches inconsiderate drivers a lesson! Well, theoretically. The LuxBlaster is a spot light which points towards the most intense light source. The ...

Automatic light/dark indicator systems have very common utilities in day-to-day life. Such applications include street lighting at night, morning alarm, automatic emergency light and dark activated ...