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Dave's Circuits
Circuits designed by David Johnson, P.E.

Master Category List - Dave's Circuits
Last Updated on: Monday, April 21, 2008 04:18 AM


Geophones    Motion Detectors 

Home Made Geophone Detects Foot Stomp
A home made geophone is made from a strong magnet, a coil of wire and a rubber band. The circuit is sensitive enough to detect the vibrations of a nearby foot stomp.  It could be used as an earthquake detector.

Click on Drawing Below to view PDF version of Schematic

Geophone Foot Stomp Detector designed by Dave Johnson, P.E.

Geophones    Motion Detectors 
Master Schematic Category List - David A. Johnson, P.E.
 

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