[tech] Serial Port Games: Smoke Detectors.

[Duncan Sargeant]

James Bromberger wrote on Mon April 30, at 13:34 +0800:
> On Mon, Apr 30, 2001 at 11:25:06AM +0800, Mark Tearle wrote:
> > > 	Smoke Detector connected to a standard Serial port (or, for that
> > > matter, a multi port blackbox like door). Daemon monitors port(s) and waits
> > > for a signal(s). On alarm, raises alert by some means, possibly smssend,
> > > possibly email (to several email addresses, at least one of which
> > > should probably be remote!), possibly by picking up a modem on a different
> > > port and sending SMS SOS!

If your smoke detector doesn't speak RS232, you might want to use your
parallel port instead, or build a circuit to output a continues stream
of bytes on your serial line if the smoke detector output is high.  I
don't know how PC's deal with non-RS232 input.



,dunc