detect earth movement

I live very close to very busy highway.any way to build cheap seismograph to see & record my house shaking when overloaded semi goes by ?? (nothing against drivers )

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Kiteman9 years ago
I once made a seismograph from a cardboard box. We hung a plastic cup inside the box, from four strings. We filled the cup with stones, and taped a pen to the side so that it just touched a piece of paper we slid through two slots at the bottom of the box. When I had almost 600 pupils jumping up and down, it recorded a deflection of about an inch. (We got a Guinness World Record certificate for that - we were part of the world's largest participation experiment, with thousands of UK pupils all jumping at the same time around the country to try and register a tremor at a seismological lab.)
swoogydew (author)  Kiteman5 years ago
cool,thank you for your info .very helpfull
How about a simple pen on paper setup? Just have to rig something to hold the pen steady but loose against the paper.
How about using a laser instead of the pen and a webcam instead of a paper? I wonder... Work for an Arduino or a computer interface?
Rishnai9 years ago
These people have a nice design, but I think it could be improved upon, mainly by adding bearings and a another 'graph for meauring vertical deflection. It's nice and elegant, though.
gmoon9 years ago
BGmicro's been selling a geophone and simple output display for year or two:

Geophone, Seismic Kit, $20 USD

You'd likely adapt the output display, or build a new interface for recording the data.
gmoon gmoon9 years ago
Chanced upon this PDF about educational seismographs. It includes geophone interface schematics, and links to other websites...
NachoMahma9 years ago
. Something like this accelerometer (not an endorsement, just the first one I found) will do the trick.
LinuxH4x0r9 years ago
I can do that with my laptop and a program called seismac