Here’s a project that shows you how to decode a tv remote control’s infrared (IR) signals and make your own IR receiver for it.
The remote control changed the way we watch TV. Some might say that it has made us even lazier. However you see it, it is important to understand how it works and how we can use it in our own projects. Most remote controls, whether for the TV, stereo or cable, operate using infrared light to transmit a command to a receiver, telling it to do something.
Infrared IR Receiver – [Link]