London-based Laarco have developed a machine to create large works of art using a technique known as “String Art”. This technique uses thousands of nails and a single piece of string to construct a ‘painting’ of a subject. Laarco’s machine, called “Autograph”, uses a Raspberry Pi at it’s core which sends commands to an Arduino Mega fitted with a 3D-printing shield which controls the mechanism. The results are astounding as you can see from the time-lapse video above. You can even buy a piece from Laarco for upwards of £700/$1100 (approx).