James Devine made this automatic pen printer device as his hobby. It took him about 3 days of work, programming the Arduino, the motors, putting stuff together, now it can print any black and white picture automatically. It reminds me of the totally amazing 1810 Henri Maillardet Automaton. James Devine works as a electrical engineer at CERN, standby to work on electrical systems for all the experiments at the Large Hadron Collider. James Devine released the source code and info about his robot drawing arm at his blog.