Karen Kloosterman, of Israel’s Flux, has developed Eddy – a foot-high plastic robot that communicates the growing conditions of your hydroponics unit (pH level, temperature, humidity, pollutants etc.) via a smartphone app. It can even control the nutrients in the plants, revolutionizing agriculture.
http://www.treehugger.com/gadgets/eddy-robot-will-help-you-grow-vegetables-hydroponically.html