Waterfall Swing | Specifications, Photos and Videos
Installation Specification Sheet
Solenoids 384 independently controlled one way direct acting, normally closed, 24v .25 amp with a 15ms delay. 1/8" ID outlet. They are Spartan Scientific model 3825-07-A203
Controller The controller circuit boards were custom made by Ian Charnas, each one operating 16 solenoids using a simple BJT transistor, connected via RS-485 running 1 Megabaud.
Encoders for Position Sensing 10-bit absolute position Kubler T8.5850.ZP15.B102
Software one section of software is created to convert a gif into the appropriate command for solenoids the second multi threaded program monitors the swing position and controls the solenoids, written in Ruby by Andrew Witte.
Water Flow Water Pump circulates water through a 4" sch 40 plenums holding three 5' sections of solenoid.
US Pump Flotec Pump: 1 HP, 60hz, 1HP, 1SP, 115V, 15A, 1.5"
European Pump Hayward Spa Pump: 50hz European, 1.5HP, 1SP, 220V, 5A, 1.5"
Frame The swing is an 18' steel framed swing, 3/4" ipe seats suspended by 3/ 16" aircraft cables.
The sequence of three still images below shows riders swinging through the plane of water without getting wet.
These images show the Waterfall Swing writing letters and shapes.
An animated GIF of Waterfall Swing riders.
Riders enjoying the Waterfall Swing at World Maker Faire, New York, September 2011
The swing operating as a water writer at World Maker Faire.
No Captions Version of Waterfall Swing at World Maker Faire.