Old 3D printer becomes new Arduino UNO Q-controlled pen plotter

Elliot Madsen, an engineering student, has transformed an old 3D printer into a pen plotter using an Arduino UNO Q. Pen plotters are devices that move a pen across paper in the X and Y axes, making them ideal for producing large technical drawings. Madsen utilized parts from the 3D printer, including stepper motors and aluminum extrusions, and implemented a CoreXY motion system with a solenoid to lift the pen. He also designed a vacuum table that uses fans to hold the paper in place, eliminating the need for clamps.