> Custom codes for the 38~40 KHz range - but just for
> 'appliance' type control. Not bidirectional for comms etc

In that case (assuming you're rolling your own), you can
treat the IR data as you would any signal on a pin. Use a
3-pin IR receiver with built-in amp (note:might invert the
signal) and filter to pick up the data. Sticking to the 38kHz
carrier is a good idea, much better performance. As for
what you do regards the data, that kind of depends on
what you're expecting. If it's your protocol, commands,
and format coming from your transmitter then it's entirely
up you. Although the RC format is quite widespread for
appliances and something you may consider using as
there's a fair bit of info around (at Sony, Philips etc), you'll
always find a product from some company that's totally in-
house and it always happens to be the one you're trying
to back-engineer, as Sod's Law dictates it should be

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