This light activated remote switch circuit could be operated using a flashlight beam and could eb used for toggling a specified load from a distance using an external light source such as a flashlight ...

This remote controlled switch circuit can control AC loads such as lights, fans etc through the remote handset of TV. It uses the 555 timer in the bistable mode. In the bistable mode output IC555 ...

[fahadshihab], a young tinkerer, shared his circuit design for a simple remote control using 555 timers. Using a 555 calculator, he designed a clock circuit that would run at 11.99 Hz. Two transistors ...

Covering home audio and video, Matthew Moskovciak helps CNET readers find the best sights and sounds for their home theaters. The Logitech Harmony Smart Control combines RF functionality and ...