12:22 pm September 9, 2016 By Julian Horsey Using the power of Arduino, Evan Kale has ingeniously transformed a weed wacker into an Arduino-powered metal detector.

You'll definitely need some gear for it—the Arduino for one, but also a PIR motion sensor, not to mention the (cleaned and rinsed!) Raid Power Sprayer motorized spray bottle.

In 2001, Richard Reid boarded an American Airlines flight with plastic explosives inside his shoes. Since then, Americans have had to remove their shoes during airport security checks and, at some ...

Behold – the radiation detector made from the same plastic used in PET bottles, at a tenth of the cost of existing radiation detection machinery.