The Lie Detector Kit is an oscillating circuit based on the theory that when one is lying there is a change in galvanic skin resistance that would cause the oscillator frequency to increase. This kit uses the IC 555, and one can change the sensitivity with a low and high switch and a in series trim pot. In operation, a person would hold a wire connected to washers in each hand. When the person is lying to a question there GSR changes causing the frequency to change or the sound to increase to indicate lying. In testing this theory I found that it did not work. Lastly, this kit can also be used as a moisture indicator, and in the video, I demonstrate that this idea is very promising.
Testing
Water Detecting
