Re: X-10 RF Freq Mod

[Just Another Joe <address@xxxxxxx>]

On Sat, 23 Dec 2006 12:32:13 GMT, nobody@xxxxxxxxxxxx (Dave Houston)
wrote in message <458d1d98.684393375@xxxxxxxxxxxxx>:

> Just Another Joe <address@xxxxxxx> wrote:
>
> >The best thing, or course, would be to have them on different
> >frequencies.  Hoping someone will be able to point me to some
> >reasonably-priced RF motion sensors using a different frequency than the
> >x10.com transmitters.
>
> It's a little more complicated. You need a receiver of the same frequency
> and the receiver module needs to have enough smarts to decode the RF and
> output something you can act on.

Yes, I was wondering about that.  From what I can see regarding the
(optional?) RF receiver on roZetta, it simply provides a signal
envelope, and requires the cpu to supply all the smarts?

> Most of the suppliers of security devices have wireless motion sensors. I do
> not want to support these directly in roZetta because each protocol
> supported requires some amount of code space and code space is somewhat
> sparse. I will design separate modules with RF receiver and a PIC that will
> receive, decode and output via RS232/RS485. You can input this via any of
> roZetta's serial ports or the RS485 network. This requires minimal internal
> code space. Initially, I want to limit this to a few of the most widely used
> like GE ITI, Caddx, Visonic. It also needs to be limited to ones using ASK
> modulation and frequencies which the 8-pin Wen Shing or Radiotronix RF
> receiver I prefer can handle.

That sounds fine to me.  I'll try to find some info/prices on the names
you mentioned, to see if I can afford them :-).  The motion sensors must
(for me at least) take a second place to handling Insteon.

--
Just Another Joe        Remove .windows to reply.
Why be politically correct, when you can be right?