--- "Mark E. Skeels" <meskeels@earthlink.net> wrote:

> Hi, list,
> 
> Weirdly, over the last 6 months, between 12 midnight and 6 AM, when
> my 
> wife and I are sleeping, she will occasionally be awakened by a 
> "shaking." We live in northern Illinois, in a rural area, miles away 
> from any urban development, gravel pits, or anything such like. I 
> consistently sleep through it.
> 
> I was thinking to build a vibration sensor using a MSP430 (sorry
> PICers) 
> and one of AD's accelerometer chips, to log the disturbance.
> 
> Does anyone have any idea what kind of G range something like that 
> should measure?
> 
> Mark
http://en.wikipedia.org/wiki/Seismometer

Recomended reading :)

Stephen

Stephen R. Phillips was here
Please be advised what was said may be absolutely wrong, and hereby this disclaimer follows.  I reserve the right to be wrong and admit it in front of the entire world.

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