DIY Linux Mobile Phone

From LinuxDevices July 11, 2007 -

Linux-based SBC vendor Gumstix will soon begin accepting pre-orders for cellular networking and GPS daughtercards. Its Goliath daughtercards target remote data applications such as fleet tracking, as well as "hobbyists who want to build their own phone.

Gumstix Verdex with Bluetooth, top and bottom

The Goliath daughtercards will work with Gumstix's Verdex (pictured at right), a minuscule SBC about the size and shape of a stick of chewing gum. The Verdex is powered by an Intel PXA270 SoC (system-on-chip) -- probably the most popular mobile phone processor in today's crop of Linux-baed mobile phones.

Two Goliath models will be offered initially: the Goliath-vx, which implements GPRS/EDGE functions based on a Siemens MC75 wireless module; and the Goliath-GPS-vx, which adds a u-blox Neo-4S GPS module, both pictured below.



Additionally, Gumstix will offer a 4.3-inch LCD module based on a Samsung LCD. The LCD module will measure 4.2 x 2.6 inches (106 x 67 mm) -- the same dimensions as the Goliath boards, according to the company.

Both Goliath modules will interface with the Verdex SBC via full-speed (12Mbps) USB, with GPRS signals redundantly routed to a serial interface. Additionally, both daughtercards will integrate a USB hub controller, enabling one off-board and all on-board Goliath USB devices to be simultaneously usable by the Verdex board.

Availability

Gumstix plans to ship the Goliath-vx and Goliath-GPS-vx in volume in "late July." It will begin accepting pre-orders through its online store on July 16, it said.