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A Raspberry Pi (or short: Rpi) is a cheap credit-card sized computer, equipped with an ARM processor powerful enough to run most linux distributions.

The Foundation

main article: Rpi Foundation

The Raspberry Pi is a project by the Raspberry Pi Foundation which aims to bring computer interaction back to schoolkids, by producing very small, cheap computers.

System Specifications

The Rasberry Pi comes in two tastes, A and B, with B having more features. The General Purpose Input/Output (GPIO) pins on each board allow for the use of optional Rpi expansion boards

Model A Model B
Target price: US$25 (GBP £16) US$35 (GBP £22)
System-on-a-chip (SoC): Broadcom BCM2835 (CPU + GPU + DSP + SDRAM) (Rpi performance)
CPU: 700 MHz ARM11
GPU: Broadcom VideoCore OpenGL ES 2.0, 1080p30 H.264 high-profile decode
Memory (SDRAM): 128 MiB 256 MiB
USB 2.0 ports: 1 2 (via integrated USB hub)
Video outputs: Composite video|Composite RCA, HDMI (not at the same time)
Audio outputs: TRS connector|3.5 mm jack, HDMI
Audio inputs: none, but a USB mic or sound-card could be added
Onboard Storage: Secure Digital|SD / MMC / SDIO card slot
Onboard Network: None 10/100 wired Ethernet RJ45
Low-level peripherals: General Purpose Input/Output (Rpi GPIO) pins, Serial Peripheral Interface Bus (SPI), I²C, I²S, Universal asynchronous receiver/transmitter (UART)
Real-time clock: None
Power source: 5V via Micro USB or GPIO header
Power ratings: 500mA, (2.5 Watt) 700mA, (3.5 Watt)
Size: 85.60mm x 53.98mm (3.370 × 2.125 inch)


main article: Rpi Software

The Raspberry Pi is a fully capable ARM computer, so it should be able to run about everything compiled in ARM.


Add-on boards (shields)

main article: Rpi addOns

The Rpi GPIO pins on the board allow for the connection of many shields, adding more functions to the main board. These range from sensors (Rpi Gertboard) to connectivity (adding a VGA connection).


main article: Rpi Peripherals

Most computer pheripherals will work with the Raspberry Pi without any problems.


main article: Rpi Education

The Rpi is geared towards eduction. Here you should find teaching methods, hints and tips about how to use the Rpi in the classroom.


Computing at School is writing a manual for the educational use of the Raspberry Pi.


main article: Rpi Projects

While the Rpi is intended for education, it is also the heart in many projects, from home automation to clustercomputers (called Rpi bramble in the jargon). Projects worked out here are useful as examples, inspiration or direct manual for your own projects, or those for more advanced pupils.

External links