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LEGO Printer

It uses a felt tip pen for ink!

This has got to be the coolest Lego invention ever. This guy designed,built, and coded it all from scratch including analog motor electronics, sensors and printer driver! He did it just for fun and worked on it for about 3 weeks at night after work. The print was going to have three colors but the inventor had to simplify because he only had four lego motors. The printer can print things at about 75 dots per inch and it prints less than a page per minute.

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