K.I.S.S. Keep it simple stupid.

Simplest is to use variable pulse width for each transmitter.
Measure the received pulse width and categorize. (using any one of a dozen
different IR receiver chips).

Throw away measurements that aren't within a few percent of expected
widths as 'interference'. Use prime number widths to ensure uniqueness
even when two transmitters send simultaneously.

556 timer chip can do the transmitter side easily.(carrier + width).
Any low end PIC can measure millisecond wide pulses and decode into #n pressed.


Robert

Jason wrote:

> Can anyone point me to a good tutorial on building an IR remote control system?
> 
> I'd like to have several transmitters each with a single signal they can output and one receiver that identifies which transmitter signalled it.
> 
> The problem is I don't know how to read the signal coming in.  
> 
> Thanks,
>   Jason
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