Jose Luis Rojas Calderon picked up $10,000 for his idea in a recent design challenge sponsored by Freescale Semiconductor. The winning design is a digital sun distiller, essentially a glass-topped box that gathers condensed water vapor created by the sun’s heat. Instead of gathering the reusable water in jars or bottles, the distiller intelligently distributes water where and when it is needed in a given household. Using Freescale’s microcontrollers, Zigbee transceivers, and pressure sensors, the distiller can estimate potable water production on a daily, weekly, or monthly basis.