The video above shows the creative art of Eske Rex. From his web site:
Drawingmachine is a construction involving two pendulums, each suspended from a tower construction and connected through “drawing arms” and moveable joints. A ballpoint pen resting on a drawing surface covered with paper is mounted at the point where the pendulums come together. The pendulums are set in motion by hand, and their movements are represented on the paper. The Drawing Machine serves to purposes: On exhibitions where the movements of the pendulums affect the entire room, and the experience engages the beholder’s body. While the rhythmic repetitions cause the beholder to pause, the drawing emerges on the paper. And as a tool where investigations on the relation between time and movement.
I’d love to replicate his work on my own. Perhaps one day soon.