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Seismograph Earthquake Vibration Seismic Geophone Kit Seismograph Earthquake Vibration Seismic Geophone Kit What is a geophone? Well, its an electronic receiver designed to pick up seismic vibrations. That means we have the main ingredient for an exciting kit. Ultra-sensitive geophone circuit "listens" to vibrations in the ground. You can place this kit outside and watch the changing LEDs to see if there is someone or something coming. The closer it gets, the higher the LED reading. In our experiments, we mounted the geophone on a board and covered it with dirt outside a window. Some pretty interesting observations were made when cats, dogs, or people walked by. You can even build your own seismograph. Adjustable sensitivity. 10 LEDs indicate signal strength. Geophone sensor is 1-1/2" in diameterX2" tall. Comes with power supply (wall wart) or, for portable operation, uses 9V battery (not supplied). Amazingly sensitive. Use LED outputs to trigger other devices, such as relays, lights, sirens, trap doors, net launchers, etc. Kit comes complete with PC board, geophone, LEDs , wiring instructions, and all the parts to get you started. Seismograph Earthquake Vibration Seismic Geophone Kit |