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Gadget Freak Case #190: Test Your Knowledge, Win a Gumball!

Here’s a gadget that lets you flip a switch and win gumballs based on your trivia expertise.

Here’s a gadget that lets you flip a switch and win gumballs based on your trivia expertise. Ed Brinkhoff, Ethan Franck, Brent Mackenzie, and Taylor Steinbaugh -- engineering students in the Colorado State University Mechanical Engineering program -- have created a device that lets you scan your hand and answer some questions using a touchscreen. Gumballs come down three different crazy paths for each correct answer.

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  • Build instructions pdf and supporting schematic

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