We see a lot of simple pen plotter projects around here, and while we appreciate them one and all, most of them are a little on the slow side. That’s OK — a glacial pace is sometimes all that’s needed ...

[Arca] sets out to build himself a low-cost pen plotter that doesn’t require access to a 3D printer. The plotter uses a coreXY arrangement, powered by 28BYJ-48 stepper motors, which he overdrives with ...

Brian Altman said suspect Irfan Khalid, 27, was heard describing the device, featured in the al-Qaeda magazine Inspire, and saying the idea was to "just drive it into people in (a) crowded area." ...