Arduino may be known for revolutionizing open source hardware platforms, but this week it enters the 3D printer market with the small and affordable Materia 101.

Robert has developed a kinetic custom PC case, a project combining woodworking, 3D-printed components ... The centerpiece of the case is an Arduino Uno board, programmed with various code snippets.

Though composed of 3D printed parts, the railgun design isn't something most people can pick up and run with. "The railgun's electronics are based around an Arduino Uno R3 [circuit board] which ...