AVR-Chat

Dave -

I don't see your reason for using pulses. Why not just a
soft pull up at one end (say, the receiving end), a hard
pull down at the other. Then, if any switch opens, the
pull-up end goes high and you have it.

Jim
 

On Tue, 09 Nov 2004 14:42:23 -0000
 "Dave Mucha" <dave_mucha@yahoo.com> wrote:
> 
> Hi all,
> 
> I am looking an alarm type switch and am thinking of
> using a Tiny11 
> to generate a pulse of something like 10khz and then send
> that thru 
> the 6 to 10 switches (in series) and then use the same
> Tiny11 to 
> detect that pulse.&nbsp; Any switch opens and the pulse
> is lost.
> 
> An alternate is to use a pair, one to generate and one to
> detect.
> 
> BTY, does anyone know if there will be another group buy
> ?
> 
> Dave
> 
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