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Make Your Own Lie Detector
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Make Your Own Lie Detector - Make the Finger Pads

Install everything in the project enclosure leaving just the Finger Pad leads exposed through drilled holes. I also drilled holes in the box so you can hear the speaker.

Using a strip of Velcro (soft side), cut a piece of aluminum foil the size of the Velcro. Make sure the Velcro is long enough to go around a big, fat finger. Some liars are chubby. Remove the sticky side of the Velcro and attach the aluminum foil with one of the Finger Pad leads under the aluminum. Then use a smaller piece of the other part of the Velcro (the 'hook' side) and attach it to the end so the whole pad can be wrapped and secured.

Curious about where Velcro comes from? Read about it on our list of the Top 10 Eureka Moments.

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