There are some great presenters and exhibitors here at HOPE. Besides the usual suspects: Adafruit, EFF, Sparkle Labs, No Starch Press, there are a number of new faces. One of those is Brad Litwin, here with the folks from The Hacktory in Philadelphia, PA.

We’ve covered Brad’s wonderful kinetic sculptures here before. In his basement shop, he fabricates the parts to make pieces such as the “Sway of Public Opinion” (above) and “Tracker-Rocker” (below). “Sway” uses welding wire, coat hanger material, and copper cladding to create a caterpillar-like line of frantically-peddling bicycling feet. The camera-motor-powered “Tracker-Rocker” gracefully rolls a bearing-ball around a Tilt-a-Whirl-y track.

He’s only showing a video of the Quadapult at the con, but it’s definitively worth checking out (shades of Animusic, only real) .

More photos, videos, and info at Brad’s site.

Brad Litwin

Mechanical Atom Smacker

Gareth Branwyn

Gareth Branwyn is a freelancer writer and the former Editorial Director of Maker Media. He is the author or editor of a dozen books on technology, DIY, and geek culture, including the first book about the web (Mosaic Quick Tour) and the Absolute Beginner’s Guide to Building Robots. He is currently working on a best-of collection of his writing, called Borg Like Me.

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