WAVE, by lead artist Charlie Gadeken, is a 25-foot high hydraulically-activated kinetic artwork that debuted at the Coachella Valley Music and Art Festival in 2012. Each one of the four towers has three joints, each moved by a proptional hydraulic valve controlled by a PID feedback loop for accurate positioning. I designed and built the 12-channel feedback control system in three weeks. More images in this flickr set as well as by Michael Prados and Jason Chinn.
Video by Michael Prados.