Apple Engineer Uses LEGO Bricks to Build "Hugo"-Inspired Machine That Writes Messages and Draws Pictures!
LEGO Drawing Machine | YouTube, machine | BUILD A LEGO DRAWING MACHINE INSTRUCTIONS HERE: http://frugalfun4boys.com/2017/06/11/build-lego-design- drawing-machine/ My oldest son found this... | By Frugal Fun for Boys and Girls | Facebook
LEGO Drawing Machine (Spirograph) - YouTube
Spirograph Automaton made with LEGO Mindstorms EV3 - Christoph Bartneck, Ph.D.
Design and build a LEGO drawing machine with DUPLO gears and bricks. Makes a great STEAM project for kids. | Inspiration Laboratories