A few weeks ago we covered a (probably) bogus post about controlling a TV with the IR from a flame. That got us thinking about what the real origin of the remote control was. We knew a story about the 38 kHz frequency commonly used to modulate the IR. We’ve heard that it was from sonar crystals used in earlier sonic versions of remotes. Was that true? Or just an urban myth? We set out to find out.
Surprise! Remotes are Old!
If you are a younger reader, you might assume TVs have always had remotes. But for many of …read more http://pje.fyi/NfcWNx