Programming the AR. Drone with URBI : ball tracking [Part 3] Huge Electromagnetic Dancing Balls. ONするとOFFするロボットをいじめてみた. Rollin' Justin Robot Catches Balls Tossed in its Direction. Foam Printer. SOLAR-POWERED BIKINI ---- LÜT #14. Quadrocopter Ball Juggling, ETH Zurich.