This is a printer built using the LEGO Mindstorms EV3 set (31313). It uses a gel pen to draw text at different sizes and the EV3 logo, but I plan to expand it in the future to print more things, as well as process input to print on demand.
JK Brickworks shows off another awesome mechanical build – a fully-functional printer/plotter that uses a pen to draw words and images on a sheet of paper that it feeds using the wheels from a LEGO vehicle.
This is the first part in a larger project and I will be posting building instructions and more information when I post the next video for it in a couple of weeks.
He made it using LEGO MINDSTORMS EV3 (31313) and additional bricks, motors and sensors. How it works? It is programmed to convert digital LEGO models into physical prints.