Today we are going to explain about a simple circuit which is used to switch on/off any electrical device remotely through a relay using the normal TV/VCR/VCP/VCD remote control unit. First of all, ...

Infrared remote controllers are everywhere around us. The majority of home appliances are controlled using infrared remote controls. In this article/video, we will learn how to build a device that can ...

Unlike a flat membrane-type keypad, the rubber-bump keypad has a tactile, tangible feel when the key buttons are pressed; ...