The linux Lirc project maintains a list of many remote codes.
http://www.lirc.org/

Many "universal" remotes have a code-scan feature, where it steps
through each of the preprogrammed devices and issues a power-off
command... Maybeyou could monitorthe output to build a database of
common remote codes.

Regards,
Mark
markrages@gmail


On Sat, 18 Dec 2004 18:40:45 -0000, James A <jamesa@jpacsoft.com> wrote:
> Hi,
> 
> I'm making an audio/video accessory with IR remote control. The remote
> control handsets use the NEC protocol which starts with a 2-byte customer
> code. I need to pick a customer code that won't conflict with any customer's
> existing A/V equipment. The handsets are to be pre-programmed by the
> manufcaturer in batches. Unfortunately they can't/won't offer me any advice
> on what customer code I should use - either they don't know or maybe they
> don't want liability if it does turn out to conflict.
> 
> BTW, I know there are a lot of possible codes so picking one at random
> *might* work, but on a previous project we did this and later found out it
> did conflict with many Toshiba TV sets.
> 
> AFAIK there is no list anywhere of customer codes used by different
> manufacturers that use NEC protocol. Could anyone please suggest an approach
> to finding one that is unused (or very rare at least)? Many thanks.
> 
> James
> 
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