Our unique system architecture for a WSN-based NDT solution builds upon our wireless sensor network
platform, called Sprouts [3], which is described in section 3.2. Sprouts is a modular WSN platform that allows up to
four custom modules to be externally attached and automatically detected. Modules communicate with Sprouts
using plug-and-play (PnP) protocol over a standard serial peripheral interface (SPI) bus. Our unique NDT solution is
designed in the form of an external module, which is described in section 3.1.