bassman71 said:
Thanks for the info, what I'm trying to do is replicate my garage door
remote.
So you'll have to gather information about this particular remote. This
things can be really complicated these days. Have a look at:
http://focus.ti.com/lit/ds/slws011d/slws011d.pdf
for instance.
Once you know what chip(set) is used in your remote, you may be able to
decide whether or not you can duplicate it by using the original chip(s).
Microchip sells some PICs with build in RF but of course I don't know if
they cover the frequency range you need and/or if they're powerfull enough
to emulate the chip in your remote. On the other hand, Microchip has it's
own chips that can be used for remote openers, maybe even in your one.
You'll have to dig pretty deep into the bits before you can start some
design. Programming is only the last step.
petrus bitbyter