Have you ever wondered where all those magical Arduinos come from? Tour of the Arduino Manufacturing Facility article tells that they come from Torino, Italy, and how they are built. The video below will walk you through the PCB manufacuring and assembly process.
For more details check also the large set of pictures from Tour of the Arduino Manufacturing Facility article.
Another article related to Arduino making is The Making of Arduino published in IEEE Spectrum. The Making of Arduino article tells how five friends engineered a small circuit board that’s taking the DIY world by storm.