It was only a matter of time. The Internet of Things has already come for our vaporizers, now it is back for our hydroponic grow ops. Behold the Gro.io, an all-inclusive hydro system that's nearly fully automated. The brains behind this system is the Gro.hub. This central computing tower runs an embedded Linux OS on a 1GHz ARM Cortex-A8 Processor and processes signals from ten separate remote sensors. These monitor things like water temperature, level, pH and flow.