This video covers the NEC family of protocols, which are widely used in typical consumer IR remote control devices, and explains how the 38 kHz carrier wave is used to encode a binary signal.

Most standard remote controls send signals to your home theater gear using a beam of infrared light, which a sensor on your hardware picks up. You can’t see this beam, but your smartphone’s ...

Turn on your Samsung TV using the power button on the TV or an already paired remote. Find the remote control sensor on the TV—it’s typically on the lower right side but may be at the bottom ...