How do remote control things work? How can I press the up lever on a controller and make an RC car move across the room?
In: Technology
They work with radio waves. Radio waves are like light, but at a different frequency so you can’t see it, and they can easily go through things like walls. When you press a button on the remote, the remote sends out a radio signal, blinking it on and off very fast in a specific pattern. The receiver (inside the TV or the RC car) looks for radio signals and when it identifies a specific pattern, it will do something like change the channel. There’s basically a little computer inside that has software on it with a list of signals it can recognize, and what to do when each signal is received.
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