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.

This week’s selection is “More Intermediate Arduino and 3D Print Model Railroad Projects” by Paul and David Bradt. This book focuses on electronics, but also on 3D printing. While many 3D printer ...

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 ... post for step-by-step ...