ESP Levitation (actually just a webcam and a fan)

For my project I decided to do an interactive alternative to Erwin Redl's "Ascension (thirty-one)"  using a pretty similar mechanism, a ball in a tube being levitated by a fan. The video above is me playing with the prototype, made with acrylic tubing, a squirrel cage fan (from sparkfun), plywood, a ping pong ball, a mosfet, an arduino and a webcam. Imagine its like the worlds fair or something, and stay tuned for the upscaled (not janky) version!