It’s that time of year when lights get put up only to stick around until mid-January or later. Holiday displays spill from homes into yards, and sometimes, even onto the road. For some drivers, ...

This circuit adds a nice fade-in fade-out visual effects when switching your in-car lights on and off. The fading time can be changed by adjusting the charging and discharging times of the capacitor.

Most cars do not have delayed interior lights. The circuit presented can put this right. It switches the interior lights of a car on and off gradually. This makes it a lot easier, for instance, to ...