GridBridge, a Raleigh tech outfit that, at about a dozen employees stands beside tech giants Cree (Nasdaq: CREE) and Deere & Co. (NYSE: DE) in a Barack Obama-fueled initiative, is bulking up. The company just closed on a $500,000 funder and CEO Chad Eckhardt has signed the papers on a new headquarters, in a building just south of downtown Raleigh. Read: GridBridge expands to New York In addition to fueling research, the cash will go toward building out the team. Eckhardt says the firm, which…