Turn an Old 3D Printer Into an Arduino UNO Q Pen Plotter (opens in new tab)

🦐 Got an old 3D printer gathering dust? Don't toss it — turn it into something new! Elliot Madsen is an engineering student obsessed with his field's history. He took parts from a retired 3D printer and built a fully functional Pen Plotter powered by the Arduino UNO Q. What is a Pen Plotter? A pen plotter is a machine that moves a pen around on X and Y axes to draw technical illustrations, schematics, and architectural plans. These were huge in engineering before digital workflows took over —...