With the advent of technologies based on radio frequency, infrared control was a bit out of fashion. Projects often carry embedded radio frequency transmitters and receivers custom or bluetooth modules , often expensive and sometimes these modules are difficult to achieve. Clearly the main limitation of a system based on infrared remote control is that the participants of the media should contact "visual". Many times when a prototype that is not a limitation.
The advantages, several, simple to implement, the transmitter may be a remote control standard components are very cheap.
For example, the infrared receiver line Vishay (one of the most used brands) provide recipients with low-pass filters that minimize the influence of external interference. In most IR remote control standards (Phillips , Sony, etc) use a modulation type ASK, where the active state is actually a series of pulses that the receiver presented as a single pulse value active logic (see this link for more details here .
My suggestion is not to dismiss the idea of \u200b\u200bthe idea to control infrared may seem outmoded .
Some interesting links
To arduino, this sketch graph allows the train of pulses coming from a remote control, ie it is rather a signal analyzer and from then on continue working.
Another project complete enough that serves as a receptor for commands from a remote control standard RC Phillips 5. The project this here and you can download the sketch. Finally
draft several infrared LED driver here.
Occurs to me it might be interesting to extend the idea of \u200b\u200bintelligent LEDs, for example with infrared receivers.
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