The Rack testbed at the Delft University of Technology is distributed around the office rooms at the 9th floor of the EWI building. The testbed consist of 108 SOWNet G-Node G301, 24 SOWNet T-Node and 8 Tmote Sky. The G-Nodes are connected to Alix.1D mini-PC via both USB for programming and via GPIO to control the I/O pins of the G-Node and simulate sensors. The T-Nodes and Tmote Sky motes are connected via USB to Linksys NSLU2. The T-Nodes are also connected to the NSLU2 via an additional board for accurately capturing the energy consumption.
The sensor nodes have the following specification:
SOWNet T-Node with USB and power measurement cables attached
SOWNet G-Node G301 with Gstub add-on for GPIO control
Alix.1D with GBoard for GPIO control