Interesting idea. Beats the heck out of trying to reverse engineer a
GM On Star unit into my Westy.   ;)

Seems there's lots of used for that timer.

http://www.555-timer-circuits.com

Neil.

On Thu, Apr 21, 2011 at 10:30 AM, David Beierl <dbeierl@attglobal.net> wrote:
> At 04:12 PM 4/20/2011, neil n wrote:
>>
>> *switch would be labelled "Angry" and "Happy" just to confuse the next
>> guy. � ;)
>
> If you want to get fancy - it's been demonstrated that the most effective
> way to get attention (and help track position?) for emergency is four per
> second repetition...just the thing for a 555 timer and relay circuit.
>
> Yrs,
> d
>

-- 
Neil Nicholson '81 VanaJetta 2.0 "Jaco"

http://tubaneil.googlepages.com/

http://groups.google.com/group/vanagons-with-vw-inline-4-cylinder-gas-engines