Petros Vrellis made these 2 pendulums which can draw. He used openFrameworks and some electronics to let the pendulums drop ink at the right time on the right spot. The first one is called “Irrational pendulum” and draws a square. The whole process takes around 6 minutes. The video shows this at a faster speed.
The second one is called “A drawing pendulum”. The pendulum need 15 minutes to draw this face.
found at make blog
Que Houxo is a Japanese artist who does live paintings. His style is quite colorful, he uses fluorescent paints with black lights. These photos are from The Paint Players event and were made by Evan Roth. The video below is from another event, but it shows what you can espect when you go to one of his live sessions. I would definitely go if I had the chance.