This 3D printed electromechanical punchcard reader is but one component of an ambitious project to build a whole, functional 3D printed computer. It's the brainchild of Chris Fenton from the NYC Resistor hackspace in Brooklyn.
I write books. My latest is a YA science fiction novel called Homeland (it's the sequel to Little Brother). More books: Rapture of the Nerds (a novel, with Charlie Stross); With a Little Help (short stories); and The Great Big Beautiful Tomorrow (novella and nonfic). I speak all over the place and I tweet and tumble, too.