These Alix boards are my normal go-to for exactly this sort of stuff. Note I say Alix, but they have a few different platforms with a few key differences. You c

These Alix boards are my normal go-to for exactly this sort of stuff. Note I say Alix, but they have a few different platforms with a few key differences. You can also get small enclosures, Wifi cards and antennas, etc. http://www.pcengines.ch/alix.htm http://www.pcengines.ch/alix.htm