UniPi is seeking Indiegogo funding for a Raspberry Pi add-on for building automation with analog and digital I/O, changeover relays, and 1-Wire interfaces. The Raspberry Pi has found its way into many a home automation project, from lighting controls to automatic sprinkler systems, and is often used as a prototype for commercial systems. But is the modest RPi up for managing an entire building? No problem, says Czech startup UniPi…