WB6DAO node showing outside and size, inside showing wasted space with terminal strips, Ethernet connection (upper left on rear panel), power regulator (upper left), Rpi computer  (below terminal strips) and URI audio/logic interface by DMK engineering ( below the Rpi.  Whole rig draws less than 5 Watts and has no moving parts.

Added 7/7/15 plb, updated 9/1/15 plb