Posted on Feb 27, 2013

This bug can be attached to anything from a glider to a pot plant and you can track it with a radio. Why track a pot plant? The Beeper is the result of many requests for a mini tracking device and introduces a new world of tracking. The circuit is very compact and consumes very little power. It is small enough to be hidden in anything you suspect will be lost or stolen. By using a mercury switch or `grasshopper` the bug can be `primed` for the time when it is moved and you can track it with an FM radio.

Click here to download the full size of the above Circuit.

A grasshopper is a switch that is ready to go off at any time. A piece of plastic is placed between the two switch contacts to keep them apart and connected to a length of cotton thread that is fixed to the floor. When the object is moved, the cotton thre

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