BetaLab was a hackerspace in the Reservoir Hill neighborhood of San Antonio.  According to their entry on Hackerspaces.org,  BetaLab is an educational resource center providing workshops, expertise and tools to the Bay Area media art and maker communities with special focus on emerging open source platforms such as the Arduino project.  Their website was still active as of January 2013, but all of the content is more than 2 years old.