Tuesday, September 14, 2010

Ball in cage alarm switch

Found on makezine.com: http://makeprojects.com/Project/Ball-in-Cage-Alarm-Switch/240/1

Cool, simple idea for a mechanical motion detector. Hook electrical leads up to two wires crisscrossing over a metal ball. If the ball moves/rolls and touches the wires, it connects the circuit and you can have it buzz an alarm or something.

The link is a how-to on making your own.

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