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More  Geophones    Motion Detectors

Human Traffic Footstep Detector


This circuit uses a surplus geophone to detect human footsteps from 100 feet away. It was designed for monitoring the Mexico/USA border. This preamp part of the system draws about 50 microamps from a 12 volt supply.

Click on Drawing Below to view PDF version of Schematic

Circuit Geophhone Footstep Detector Preamp Schematic


More  Geophones    Motion Detectors

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