On Fri, 2005-09-23 at 12:54 -0700, alan smith wrote:
> I have an application that I was thinking of using an accelrometer
> for, but now I wonder if there is a less expensive and easier method.
> Essentially I want to wake up the circuit if the box is picked up.  So
> I guess more of a movement sensor....its known by another name, as
> googling hasn't been all that helpful so far. =20

Vibration sensor? They're used in car alarms and the like.. About UK=A31
from RS..

I used one in a car alarm project.. It was a tad too sensitive though
and tended to resonate with lorries and loud bass-boxes..and people
kicking the bumper :)

The action of picking a vibration sensor up will almost certainly set it
off. I think they consist of a tiny ball mounted vertically on a spring,
in a gold-plated dome. When one touches the other the circuit is made.
Or that's what it sounds like when you shake 'em...

Cheers,

Tim.

--=20
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