The RF protocol can be found at
http://members.home.net/ncherry/common/x10.rf.txt

I've posted a bit of info on a web page at:
http://www.ubasics.com/adam/electronics/cm17.shtml

-Adam Davis

Adam Davis wrote:
>
> I use
> http://eagle.cc.ukans.edu/~mturvey/firecracker.html
> as a starting off point for the firecracker interface.  It is not similar to t
he
> CM11A interface:
>
> Consists of a PIC12c5xx, a transister, 5 or so resisters, 3 caps, two 1n4148
> diodes, and a 5v1 zener.  Three wires go to the serial port, RTS, DTR and GND.
> Signalling is accomplished by bringing both RTS and DTR high, and switching
> either one off according to whether one wants to send a 1 or a 0 to the pic.
> Quite a cool idea, IMHO.
>
> I've 'decoded' the 16 data bits mentioned in the protocol specification:
> http://www.x10.com/manuals/cm17a_proto.txt
> and will be posting it to my web site later today.
>
> -Adam Davis
> http://www.ubasics.com/adam/
>
> Adam Bryant wrote:
> >
> > Tell me more.  Is it the same protocol used to talk to the X10 CM11A
> > computer interface module?  Any links to additional information would be
> > greatly appreciated.
> >
> > Thanks,
> > Adam
> >