Raspberry Pi embedded development firm Geekroo has surpassed its Kickstarter funding goal for a Mini-ITX board and case that extends the RPi into a full-fledged computer (SBC). The Fairywren is equipped with a 24-pin ATX power supply connector, a four-port USB hub, a 2.5-inch HDD bay, a serial port, an IR remote module, GPIO breakout, and sockets for a built-in XBee radio and Arduino Uno boards.



Australia-based Geekroo, which sells a variety of Raspberry Pi cases and breakout boards, has quickly surpassed its modest Kickstarter funding goal for the Fairywren of 5,000 British Pounds. After almost two weeks, it has surpassed 7,200 Pounds, or about $10,875 U.S.





Fairywren Mini-ITX baseboard for the Raspberry Pi

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The funding price is 40 pounds, or about $60. The Mini-ITX board and case prototypes are still a work in progress, but the specs will be frozen Aug. 1, 10 days before the funding round ends, says Geekroo.

The idea for the Fairywren came when the Geekroo developers became fed up with the clutter from all the cabled peripherals attached to the 85 x 56mm Raspberry Pi. The company’s earlier Pi cases protect the tiny SBC, but don’t contain all the add-ons used by a typical RPi hacker.





Fairywren component locations and rear I/O panel

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The Geekroo uses the 6.7 x 6.7-inch Mini-ITX form-factor along with an acrylic case with cutouts for real-world ports. It also comes with a prepunched rear I/O panel, intended for use with typical off-the-shelf Mini-ITX cases. The board requires a Raspberry Pi from one of the later generations that include mounting holes, but support may be added later for original RPi’s.

The Fairywren appears to support the $35 Model B rather than the newer, stripped-down $25 Model A. Documentation for the system is still far from complete, but images appear to show all the RPi’s real-world ports extended to one side of the case. The current prototype shown in most of the images will be replaced with an easy-open transparent acrylic case.

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The Fairywren also adds a real-world RS232 serial port, as well as a GPIO breakout panel. Instead of the normal two USB ports, an integrated hub supplies four ports.





Fairywren and its rear panel in a typical Mini-ITX case

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The system includes a bay for a 2.5-inch SATA hard disk drive (HDD). Users can instead choose to use the bay to connect an Arduino Uno microcontroller board, a recent update to the design. The Arduino can be used to control basic functions of the Fairywren, including the cooling fan and a Digi XBee ZigBee radio module, available via a newly added XBee socket.





Fairywren in its optional acrylic case

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Preliminary specifications for the Fairywren include:

Processor/memory — supports Raspberry Pi (700MHz ARM11 Broadcom BCM2835 with VideoCore IV GPU, with 512MB of SDRAM)

Storage — 2.5 inch SATA HDD bay; SD/MMC/SDIO slot

Networking — 10/100 Ethernet port

I/O: 4x USB 2.0 ports via built-in hub RS232 port 26-pin GPIO breakout HDMI port Composite RCA output

Other features — IR remote module; Arduino Uno socket; XBee socket; RTC; temperature sensor for cooling fan

Power — ATX 24-pin power socket with programmable power system and 3.3/5/12V output

Dimensions — 170 × 170mm (Mini-ITX) in acrylic case

Operating system — Linux

The Fairywren is expected to ship in October to Kickstarter supporters for 40 U.K. pounds, or about $60 U.S., not counting the $35 Raspberry Pi or optional user-supplied Arduino Uno, HDD, or XBee add-ons. More information may be found at Fairywren Kickstarter page, and eventually, at Geekroo.

