The main processing unit and controlling part of the mobile device is the Gumstix[29]. The Gumstix is a single-board computer. The 'gumstix connex 400xm-bt' model was chosen for this device. It has a 400 MHz Intel XScale PXA255 processor which is a 32 bit RISC architecture based on the ARM design, and has kind power consumption requirements. Gumstix has 64 Mb of RAM, 16 Mb of flash memory and a Bluetooth interface. The dimensions of the gumstix board are 80x20x6mm which makes the gumstix a very attractive platform in terms of portability for a mobile device. Figure 3.3 shows the Gumstix board together with its Bluetooth module.

Figure 3.3: Gumstix board used in Snout platform.

Jenson Taylor 2008-01-25