September 2016 65
original system included a three digit timer, but 8 to 10
year olds are not interested in the time.
#2 Try this link: www.techlib.com/electronics/
games.html. It might be useful with a little change in
Baton Rouge, LA
[#6165 - June 2016]
Dog Bark Detector
I have a very attentive dog who barks immediately
when someone is in the backyard or at the front door.
This is great for alerting me to visitors or possible
intruders, but I really can’t hear as well as I used to
and my dog has a rather quiet and high-pitched bark
that I mostly can’t hear — especially if the TV is loud. I
would like plans or a design for a “dog bark detector”
to blink a light by my chair when the dog is barking so I
don’t miss these “alerts.” Does anyone have a circuit or
schematic for such a thing?
You don’t need to build hardware. You already
have all the “hardware” you need. You need to do
some programming; namely, programming (teaching)
your dog to push on your hand when there is an
intruder. Such a trained dog is known as a service
hearing dog or signal dog.
Find a skilled trainer to teach your
dog to alert you by physically pushing
on your hand or if your dog is tiny to
whack your ankle. A trained dog is
infinitely more useful than any circuit
you can build, e.g., when trained
to do so, the dog will wake you up
when the alarm clock goes off, keep
you from being run over by cars and
bicycles, tell you when people are
sneaking up behind you, or are at
the front door. A dog will alert you to
anything you teach him/her.
The idea here — as in most
engineering problems — is to solve the
problem at hand in the simplest way,
rather than forcing a preconceived
and quite possibly inferior notion to
do what you want.
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