eLinux.org - User contributions [en]

RPi VerifiedPeripherals

2012-05-08T18:56:58Z

Md84419:

[[Category: Linux]]
[[Category: ARM Development Boards]]
[[Category: Broadcom]]
[[Category: Development Boards]]
[[Category: RaspberryPi]]
[[Category: Education]]
{{Template: RPi_Hardware}}

==Notes==

19-Apr-2012: Now that the Model B board is shipping, details added should relate to this board and the default Debian distribution unless stated otherwise. A suggested suffix markup scheme is as follows:

* (A) - Relates to model A production board
* (B) - Relates to model B production board
* (!) - Information from alpha and beta board days -- beta board verified peripherals should still apply to production boards for the most part, but the alpha board is fairly different
* No markup - relates to all production boards

''Discuss: [http://www.raspberrypi.org/forum/?mingleforumaction=viewtopic&t=247 http://www.raspberrypi.org/forum/?mingleforumaction=viewtopic&t=247]''

If you are adding to a product list it would help clarity if entries are kept/added in alphabetical order.

{{Warning|Adding peripherals may increase the loading on the power supply to your board and this, in turn, may affect the voltage presented to the RPi. If the RPi's supply voltage falls below a certain value (anecdotally stated as around 4.75V), or it begins to fluctuate, your setup may become unstable. There is a [http://elinux.org/RPi_Hardware#Power Wiki section about this issue] which is worth a read.}}

== Powered USB Hubs ==
A number of low-cost powered USB hubs are known to have caused problems. Members of the Raspberry Pi forums have reported low power or no power at all in some cases. The following is a list of specific Powered USB Hubs which appear to be fault-free. Please note that these do not take into account powering the Raspberry Pi from the hub, in addition to its peripherals.

===Working USB Hubs===
*'''Targus'''
** ACH81xx 7-port powered hub. 5V 3A power supply, with 2 high power ports. (possible conflicting behaviour with USB keyboard / Wifi Dongles)
*'''Newlink'''
** NLUSB2-224P 4 port USB 2.0 Mini hub with PSU 5V 1A
*'''Logik'''
** LP4HUB10 4-Port USB Hub

===Problem USB Hubs===
*'''Unbranded / Multiple Brands'''
** 7-port silver/black hub. Also sold elsewhere under brands such as 'EX-Pro', 'Trixes' and 'Xentra' -- This is ''probably''due to an inadequate power supply.
** Generic 7-port black hub with Genesys Logic GL850A chipset

== USB Remotes ==
* [https://www.google.com/search?q=tranksung+TS-Y150 Tranksung TS-Y150] USB RF Keyboard and air mouse (B)

== USB Keyboards ==
USB keyboards that present themselves as a standard HID (Human Interface Device) device should work.
=== Working USB Keyboards ===
The following is a list of specific keyboards known to work and which appear to be fault-free.

* '''Acer'''
** Compact Keyboard KU-0906 (B)

* '''Apple'''
** Apple Keyboard (109 keys) A1048

* '''Cerulian'''
** Mini wireless keyboard and mouse deskset (B)

* '''Dell'''
** SK-8135 (B)
** SK-8115 (B)

* '''Fujitsu Siemens'''
**KB SC USB UK (!)

* '''Genius'''
** KB-06XE (K639) (B)

* '''Lenovo'''
** SK-8825 UK (B)
** Lenovo Enhanced Multimedia Remote with backlit keyboard N5902 (US)

* '''Logitech'''
** diNovo Mini wireless keyboard with media controls and clickpad 920-000586 (B)
** Wii wireless keyboard KG-0802 (!)
** C-BG17-Dual Wireless keyboard and mouse with wired USB received (B)

* '''Microsoft'''
**Comfort Curve Keyboard 2000 v1.0 (Debian 13-Apr-2012 on Production Model B)

*'''Riitek'''
**RT-MWK03 mini wireless keyboard & trackpad

*'''Tesco'''
**Value Keyboard VK109 (B)

* '''Trust'''
** Trust 17916 Compact Wireless Entertainment Keyboard http://www.trust.com/products/product.aspx?artnr=17916 (B)

* '''Xenta'''
** 2.5Ghz Wireless Multimedia Entertainment Keyboard with Touchpad (B)

===Problem USB Keyboards===

* '''Microsoft'''
** Wireless Desktop 800 - Keyboard has 'sticky' keys. (!)
** Wireless Optical Desktop 1000 - Keyboard has 'sticky' keys (B)
* '''Novatech'''
** (B)<ref>http://www.raspberrypi.org/forum/troubleshooting/keyboard-creates-kernal-panic/page-2</ref>
* '''Unbranded'''
** model no. HK-6106 (B) <ref>http://www.raspberrypi.org/forum/troubleshooting/keyboard-creates-kernal-panic/page-2</ref>
* '''Levono/IBM'''
** 04b3:301b IBM Corp. SK-8815 Keyboard, [http://www.element14.com/community/docs/DOC-44703 conflicting behavior] with USB wifi adapters (B)
* '''Logitech'''
** model K120, [http://www.element14.com/community/docs/DOC-44703 conflicting behavior] with USB wifi adapters (B)

== USB Mouse devices ==
USB mouse devices that present themselves as a standard HID (Human Interface Device) device should work, however some hardware requires special drivers or additional software, usually only compatible with Windows operating systems.

===Working USB Mouse Devices===
The following is a list of specific mouse devices known to work and which appear to be fault-free.

* '''Dell'''
** M-UVDEL1 (B)
** M056U0A (B)

* '''Genius'''
** GM-04003A (B)

* '''Microsoft'''
** Compact optical mouse 500 V2.0 (B)
** Wheel Optical Mouse (wheel and additional buttons not tested) (B)
** Microsoft Intellimouse Optical Mouse

* '''Logitech'''
** M505 USB wireless laser, model no: 910-001324 (B)
** M-BJ79 (B)
** LX-700 Cordless Desktop Receiver (B)

* '''Tesco'''
** Wired optical mouse M211 (B)

== USB WiFi Adapters ==

See also: http://www.element14.com/community/docs/DOC-44703/l/raspberry-pi-wifi-adapter-testing

There is a howto on installing the TL-WN722N adapter [http://elinux.org/RPi_Peripherals#Wireless:_TP-Link_TL-WN722N_USB_wireless_adapter_.28Debian_6.29 here], which also acts as a guide for installing others too.

===Working USB Wifi Adapters===

These adapters are known to work on the Raspberry Pi. This list is not exhaustive, other adapters may well work, but have not yet been tried.

* '''3COM'''
** 3CRUSB10075: ZyDAS zd1211rw chipset (!)
* '''Asus'''
** [http://www.element14.com/community/docs/DOC-44703 USB-N10] USB ID 0b05:1786, r8712u staging driver, included on Fedora Remix & Arch, must compile if Debian, requires firmware-realtek; todo: test with mouse (B)
** [http://www.element14.com/community/docs/DOC-44703 USB-N13] USB ID 0b05:17ab, using compiled manufacturer driver for RTL8192CU; todo: test with mouse (B)
* '''D-Link'''
** AirPlus G DWL-G122 (rev. E). USB ID 07d1:3c0f, Ralink RT2870. On Debian requires the <code>firmware-ralink</code> package from the <code>squeeze-firmware</code> non-free repository.
* '''Edimax'''
** [http://www.edimax.co.uk/en/produce_detail.php?pd_id=328&pl1_id=1&pl2_id=44 EW-7811Un] USB ID 7392:7811, RTL8192CU, use driver for <code>Asus USB-N13</code> above (same chipset), driver blob [http://www.electrictea.co.uk/rpi/8192cu.tar.gz download] via [http://www.element14.com/community/docs/DOC-44703 Element14], works with WPA2-AES-CCMP (B)
* '''IOGear'''
** [http://www.element14.com/community/docs/DOC-44703 GWU625] USB ID 0bda:8172, r8712u staging driver, included on Fedora Remix & Arch, must compile if Debian, requires firmware-realtek; warning: conflict with mouse (B)
* '''Netgear'''
** N150: Reported as WNA1100 device, uses the Atheros ar9271 chipset. On Debian, requires the <code>firmware-atheros</code> package from the <code>squeeze-backports</code> non-free repository (!)
** WG111v2: Realtek rtl8187 chipset (!)
* '''Sempre'''
** Sempre Wireless USB stick WU300-2: USB ID 0bda:8172, Realtek r8712u driver + firmware-realtek package. Module is not shipped in Debian image, but can be found here: http://www.t3node.com/blog/sempre-wireless-usb-stick-wu300-2-on-raspberry-pi/
* '''Tenda'''
** USB 11n adapter on a G network: Ralink 2870/3070 driver (!)
* '''TP-Link'''
** TL-WN722N (ath9k_htc device with htc_9271.fw file from http://linuxwireless.org/download/htc_fw/1.3/htc_9271.fw) (B)

* '''ZyXEL'''
** [http://www.element14.com/community/message/50015#50015/l/re-installing-kernel-headers-on-the-pi NWD2105] USB ID: 0586:341e, RT3070 chipset, rt2800usb driver (B)
* '''Generic'''
** [http://www.element14.com/community/docs/DOC-44703 Ralink Technology, Corp. RT2501/RT2573 Wireless Adapter] USB ID 148f:2573, tested on debian; must install firmware-ralink package (B)
** Ralink Technology, Corp. RT5370 Wireless Adapter (USB ID 148f:5370)

===Problem USB Wifi Adapters===

These adapters were tested and found to have issues the Raspberry Pi.

* '''Trendnet'''
** [http://www.element14.com/community/docs/DOC-44703 TEW-424UB] USB ID: 0bda:8189; tested on Debian, Fedora & Arch; rtl8187 driver; conflicts with some keyboards (B)
* '''BlueProton'''
** [http://www.element14.com/community/docs/DOC-44703 BT3] USB ID: 0bda:8187; tested on Debian, Fedora & Arch; rtl8187 driver; conflicts with some keyboards (B)
* '''TP-Link'''
** [http://www.element14.com/community/docs/DOC-44703 TL-WN821N] USB ID: 0cf3:7015; tested on Debian; requires [http://linuxwireless.org/download/htc_fw/1.3/htc_7010.fw htc_7010.fw] firmware; ath9k_htc driver; conflicts with some keyboards (B)

== USB Bluetooth adapters ==
* Cambridge Silicon Radio, Ltd Bluetooth Dongle (HCI mode) - (USB ID 0a12:0001)

== USB Ethernet adapters ==

== USB IR Receivers==

== USB TV Tuners==
*August
**DVB-T205, based on rtl2832u chipset, working with [https://github.com/ambrosa/DVB-Realtek-RTL2832U-2.2.2-10tuner-mod_kernel-3.0.0 this driver]. Tested with Saorview (Irish DTT service), both HD & SD.

== USB Webcam ==

== USB UART adapters ==
The USB UART adapter is used to access the serial console of the Raspberry Pi from a development host such as a laptop or desktop PC. The USB end connects to the PC and the UART header end connects to the USB. While it is possible to connect the USB end to another Raspberry Pi, this configuration has not been tested unless explicitly mentioned against an individual entry below.

== Power adapters ==
The Raspberry Pi uses a standard MicroUSB power connector, which runs at 5v. Generally you can use a MicroUSB to USB cable and then either power the Raspberry Pi directly from your main computers USB ports (if they provide enough power), or by using a USB to Mains adaptor. A number of mobile phones use MicroUSB power cables, and these are compatible with the Raspberry Pi in most cases. Below is a list of power adaptors known to work.

===Wired Adaptors===
* '''All HTC mobile phone adaptors'''
** TCP-300 Single port USB mains phone charger 5v 1A (B)
* '''Blackberry'''
** Charger for Pearl Flip 8220, Bold 9600 (B)
** Model PSM04R-0500CHW1(M), RIM Part Number HDW-17957-003, Output 700mA @ 5V (B)
* '''Samsung'''
** Charger for Galaxy SII 5V 0.7A
* '''Maplin Electronics'''
** 5v 1000mA dual USB power supply, model number H25B-MT-K2

===External Batteries===
* ''' New Trent'''
** iCurve IMP70D 7000mAh (Approx 12hrs from full charge)

== Display adapters ==
While technically there shouldn't be a difference between one (for example) HDMI->DVI adapter and another, it would be nice to have a list of working ones so if necessary, you can just buy a recommended one (contributors should give links) instead of hunting around. This section could contain information about verified HDMI->DVI, CompositeRCA->SCART, CompositeRCA->VGA ''boxes/chipsets'', and HDMI->VGA ''boxes/chipsets''.

===HDMI->DVI-D===
None explicitly mentioned
===HDMI->VGA converter boxes===
According to user "asb" -- http://www.amazon.co.uk/gp/product/B007KEIRNG -- the Neewer HDMI to VGA adapter works with the Pi.

This adapter (from Kanaan) -- http://www.amazon.co.uk/KanaaN-Adapter-Converter-Cable-Resolutions/dp/B007QT0NNW -- is working. Quality not wonderful, but certainly usable, on 1400x900 monitor.

===Composite->SCART===
None explicitly mentioned
===Composite->VGA converter boxes===
None explicitly mentioned, and they are pricey so the chances of someone buying one to test functionality is low
== SD cards ==

Note that manufacturers change their designs over time, even as the specs stay the same. (E.g. an ACME 8 GB class 4 card manufactured in 2011 might work, while one manufactured in 2012 might not.)
For this reason, please specify product numbers in the lists below, when possible.

===Working SD Cards===
* '''Adata'''
** Class 10 8GB (AUSDH8GCL10-R)
* '''Dane-Elec'''
** 16Gb class 4
* '''Integral'''
** Ultima Pro 16GB Class 10 (20MB/s)
* '''Kingston'''
** SD 2GB (no class mentioned)
** SDHC 8GB class 4
** SDHC 8GB class 10 (ultimateX 120X)
* '''Kodak'''
** SDHC 8GB Class 4
* '''Lexar'''
** 4GB SDHC Class4 (Boots consistently and no error messages in log after 1/2 hour use )
** 8GB SDHC Class4
** 4GB Platinum II SDHC Class 6 (from [http://www.microcenter.com/single_product_results.phtml?product_id=0350735 Microcenter])
** 8GB Platinum II SDHC Class 6
* '''Microcenter Brand (sold in bins at checkout)'''
** [http://www.microcenter.com/single_product_results.phtml?product_id=0349728 8GB SDHC Class 10]
** [http://www.microcenter.com/single_product_results.phtml?product_id=0289508 8GB SDHC Class 4]
* '''MyMemory'''
** 8GB SDHC class 10 (MYMESDH8G10) [http://www.mymemory.co.uk/SDHC/MyMemory/MyMemory-8GB-SD-Card-%28SDHC%29---Class-10 MyMemory 8GB class 10]
* '''Panasonic'''
** 8GB SDHC class6 (~4.8MB/s read, ~4.4MB/s write, following [[RPi_Performance#SD_card]])
* '''Peak'''
** 4GB microSDHC class4 (MMBTR04GUBCA-ME) tested with Arch
* '''PNY'''
** 4GB SDHC Class 4
* '''Samsung'''
** SDHC 4GB
** SDHC 8GB
** SDHC 16GB Class 6 (MB-SSAGAEU)
* '''SanDisk'''
** Ultra 2GB Class 4 (15MB/s)
** Ultra II SD 2GB class 4
** Ultra II SDHC 4GB class 4
** 2GB (non SDHC but with a circle 2 --probably class 2), writes at 3.5 Mb/s
** 2GB, white "SanDisk for Wii" branded, no class mentioned
** Ultra SDHC 4GB class 6 (SDSDH-004G-U46 - BH1136121837G, BH1130521822D)
** Ultra SDHC 8GB class 6 (SDSDH-008G-U46 - BI1131222083D) (could be problematic, see below)
** 4/8GB Micro SDHC (with Sandisk MicroSD => SD adaptor) Class 4
** 4GB Micro SDHC (with Sandisk MicroSD => SD adaptor) Class 2
** 4GB SHDC (class 4)
** 8GB SDHC (class 4); writes at ~1.5MB/s
** 16GB SDHC (class 4)
** 32GB SDHC Class 6
** Extreme III 2GB (BE0715105083B)
* '''Sony'''
** SDHC 4GB class 4 (SF-4B4)
* '''Transcend'''
** SDHC 16GB class 10
** SDHC 8GB class 10 (TS8GSDHC10) [http://www.mymemory.co.uk/SDHC/Transcend/Transcend-8GB-SD-Card-%28SDHC%29---Class-10- Transcend 8G class 10]
** SDHC 8GB class 6 (~5.8 MB/s read/write following [[RPi_Performance#SD_card]])
** SDHC 4GB class 4 - we've found these to work without any errors and offer reasonable performance
** SDHC 4GB class 4 (TS4GSDHC4 - BH1130821915G)
** SDHC 4GB class 6 (TS4GSDHC6) - no problems.
** SDHC 8GB class 6 (TS8GSDHC6-P2 - MMBFG08GWACA-M6)
** SDHC 16GB class 6 (TS16GSDHC6)
** SDHC 8GB class 4

Known good (and pre-loaded) cards will be available for sale from RS and element14 at a ''later'' date (TBA).

===Problem SD Cards===

There are issues with most Class 10 SDHC cards, apparently due to a bug in the Broadcom bootloader.[http://www.raspberrypi.org/forum/general-discussion/class-10-sd-cards-on-the-production-boards/page-3/#p39181]

This seems to have been fixed in sdhci.c: [https://github.com/raspberrypi/linux/commit/7e8ae226fe6e95954df6b0dcdde40a53dbbc1a0b] Further feedback will be useful.

* '''Panasonic'''
** Class 10 8GB (RP-SDU08GD1K) mmc0: timeout waiting for hardware interrupt [http://www.mymemory.co.uk/SDHC/Panasonic/Panasonic-8GB-UHS-1-London-2012-Collection-SDHC-Card---Class-10 Panasonic 8GB Class 10]
* '''Patriot'''
** Class 10 8GB (PSF8GSDHC10)
* '''SanDisk'''
** Ultra SDHC Class 4 4GB (BH1028516076D) - Intermitant booting ( 1/50 power on ), random timeout messages when it does boot.
** Ultra Class 6 8GB (B11201421964G)
** Ultra SDHC I 8GB Class 6 (BI1201221964G) - Boots kernel but won't run init ( mmc timeout waiting for interrupt )
** Ultra SDHC 8GB class 6 (SDSDH-008G-U46 - BI1131222083D) - Boots kernel but won't run init ( mmc timeout waiting for interrupt )
** Mobile Ultra microSDHC 4 GB Class 6 - Boots kernel but won't run init ( mmc timeout waiting for interrupt )
** Ultra Class 6 16GB (BL1202021933G)
** Extreme Class 6 4Gb (BH0822411730D)
** Extreme Class 6 8GB (BI1101116253G)
** Extreme Class 10 8GB (BI1108716254G)
** Extreme Pro Class 10 8GB - Boots kernel but won't run init ( mmc timeout waiting for interrupt )
* '''Kingston'''
** SDHC 4GB class 4 (works but gets mmc errors: mmc0: final write to SD card still running) Russel King might have a kernel patch for this problem.
* '''Integral'''
** Ultima Pro 16GB SDHC Class 6 (SH016GAA2BB)

The usual warnings against less reputable sellers (such as Ebay merchants) apply.

Note that the following error is sometimes accompanied with a non-working SD card after booting (on Debian):

mmc0: timeout waiting for hardware interrupt

=== Benchmarks ===

* http://www.sakoman.com/OMAP/microsd-card-perfomance-test-results.html
* http://usbspeed.nirsoft.net/usb_drive_speed_summary.html?o=11

== Foreign Language Translations ==
* [[Ru:RaspberryPiBoardVerifiedPeripherals]]

== References ==
<references>
</references>

{{Template:Raspberry Pi}}

RPi schematic errata

2012-05-07T09:28:34Z

Md84419:

[[Category: RaspberryPi]]

Back to [[RPi_Hardware#Components]]

= Raspberry Pi schematic errata =

The (partial) datasheet was published here: [http://www.raspberrypi.org/wp-content/uploads/2012/04/Raspberry-Pi-Schematics-R1.0.pdf | at raspberrypi.org] and [http://dmkenr5gtnd8f.cloudfront.net/wp-content/uploads/2012/04/Raspberry-Pi-Schematics-R1.0.pdf | a mirror]

It has a couple of typos. Some more serious than others.

Let's gather those schematic typos and errors here.

The quality of the schematic is high. It looks like it contains the information that designers need.

==Schematic v1.0 (Model B)==

===Unverified typos===

* On sheet 3, area C9, should that not be a (B) instead of (A) under the “IC3?”
* Also D10 close by
* R22,23,24,25 & C28 all missing (B) designation
* Also on sheet 3: R38 (area B8), R28 (area H5), C49 (area A1) and C29 (area A2) also appear to be missing (B) designation
* [[RPi_Hardware#Components]] says that D5 is yellow, but the schematic says D5 is green. Could somebody who actually has a production board check? -> The OK led is definitively GREEN. -- REW.
* Sheet 4 D6: DSI0 should be DSI1

* there is an extra line drawn across R22-R25.

===Verified typos===

* Possible silk-screen typo rather than schematic typo: According to both the schematic and the LAN9512 datasheet, D9 (yellow LED) is ON if the link-speed is 100Mbs. But on the silk-screen it's labelled as "10M" rather than "100M" ? -> YES it is marked 10M due to space constraints. 100M wouldn't have fit. -- REW <ref>http://www.raspberrypi.org/forum/troubleshooting/ethernet-10m-only</ref>

=References=
<references/>

2012-04-29T10:34:19Z

Md84419: /* Landmarks and minor drivers */

[[Category: RaspberryPi]]

=Overview=

The Raspberry Pi Foundation is a UK registered charity (Registration Number 1129409), based in Cambridge, which exists to promote the study of computer science and related topics, especially at school level, and to put the fun back into learning computing.

Raspberry PI is a charitable foundation with the aim of bringing real programming and related electronics experimentation back into the classroom.

Raspberry PI itself is a single board computer designed to bring the "Homebrew" back into electronics - getting away from the pre-packaged products, which lack the spirit of technical adventure.

Children are naturally curious - but prising the back of your XBox or IPad does not go down well! A Raspberry PI is cheap enough to break, and powerful enough (we hope) to catch their imagination.

* [http://www.raspberrypi.org/about Back story: 'About Us' page on raspberrypi.org]
* [http://www.raspberrypi.org/contact-us Contacting the Raspberry Pi Foundation]

==The Ten Reasons==

The Foundation (and educators in general<ref>http://www.computingatschool.org.uk/</ref>) believe there are ten reasons why we aren't educating programmers.

#. No examples/mentors/role models: "I don't know anyone who codes"
#. Access: About 20% of UK people do not own a computer (source OFCOM 2008) Those that do are often discouraged from experimenting. In other countries, or in the lower socio economic groups access is even more limited
#. Expense: "Development systems cost hundreds of pounds, and are hard to use"
#. Fear: "If I type the wrong thing I might break it" "We can’t let students write or run their own code on the schools system, as they might introduce a virus"
#. Complexity: The learning curve to get started, for example to program in VB on a PC is quite steep. Some systems (for example Android) cannot be natively programmed
#. Culture: "Coding is only for propeller heads/boys/geeks" "Computer people are all like the IT crowd"
#. Computing is “just more ICT” as presently taught in UK schools – boring
#. Lack of skills base in schools: "I know more about computers than my ICT teacher, who usually teaches PE and RI" "I don’t know where to start and my teacher can’t help"
#. Perceived difficulty: "I can't write anything significant on my own - it takes a big team"
#. Perceived career prospects: "Coding leads to low paid jobs" "Coding jobs are all offshore" "The school points system/University entrance doesn’t value Computing"

These are roughly in the inverse order to the [http://en.wikipedia.org/wiki/Technological_change#Innovation ACCTO criteria] (Advantage, Complexity, Compatibility, Trialability, Observability) criteria of [https://www.google.com/search?q=Everett+Rogers+diffusion+of+innovation Everett Rogers given in his book "Diffusion of Innovation"].

The the Raspberry Pi Device solves exactly one of those problems: that computers are too expensive. The Foundation believes that they may eventually be able to do something about the first 5<ref>http://www.raspberrypi.org/phpBB3/viewtopic.php?f=2&t=324&start=270</ref>.

=Landmarks and tenets=

* It should be possible to equip a class with Raspberry Pis for no more than the average annual spend on subject (say, chemistry) textbooks for an equivilent sized class [1]
* Use of educational computers should not be fenced into 1 or 2 hours a week of 'formal curriculum time'
* Devices (should) belong to the student, not the school
* If it costs money, it doesn't get added to the hardware design
* A thing that you can plug into things you already own; A peripheral for your TV
* Follow the tail of the [http://en.wikipedia.org/wiki/Moore%27s_law#The_tip_and_tail_of_the_curve Moore's Law] curve down (ie basic computing getting cheaper over time) rather than following the tip of the curve up (over time computers becoming more powerful, with more features, while maintaining their price point relative to inflation).

[1] Eben originally said that Raspberry Pi devices should cost no more than what he thought a school textbook costs. It turns out that it has been some time since Eben purchased a school textbook! A school textbook typically costs $75-125 and has an average lifespan of three to five years before needing to be replaced due to wear or curriculum changes, although some schools keep some course textbooks for much longer.

=Success=
What does success look like?

Eben's personal view: Another 1000 Engineers a year entering the UK ICT Industry

RPi Philosophy

2012-04-22T15:16:52Z

Md84419: /* Overview */

RPi Philosophy

2012-04-22T14:25:40Z

Md84419: /* Landmarks and minor drivers */

RPi Philosophy

2012-04-22T13:56:25Z

Md84419: /* Landmarks and minor drivers */

RPi Hardware

2012-04-22T13:07:34Z

Md84419: /* How Can I tell if the power supply is inadequate? */

[[Category: RaspberryPi]]
{{Template:RPi_Hardware}}

==Introduction==
[[File:Rpi unpopulated pcb.jpg|thumb|right|The unpopulated Rpi bèta board]]
The first product is the size of a credit card, and is designed to plug into a TV or HDMI monitor. It comes in two variants, model A and B, with B having more features. The expected price is $25 for model A and $35 for model B. The [[Rpi Low-level peripherals| GPIO pins]] on each board allow the use of optional [[Rpi expansion boards|expansion boards]].

Those who are looking to set up a Raspberry Pi for the first time, see [[RPi Hardware Basic Setup]].

==Specifications==
{| class="wikitable"
!
! Model A
! Model B
|-
| Target price:<ref name="faq" >http://www.raspberrypi.org/faqs</ref>
| US$25 (GBP £16)
| US$35 (GBP £22)
|-
| System-on-a-chip (SoC):<ref name="faq" />
| colspan="2" | Broadcom BCM2835 (CPU + GPU + SDRAM)
|-
| CPU:
| colspan="2" | 700 MHz ARM11 ARM1176JZF-S core
|-
| GPU:
| colspan="2" | Broadcom VideoCore IV,OpenGL ES 2.0,OpenVG 1080p30 H.264 high-profile encode/decode
|-
| Memory (SDRAM)iB
| colspan="2" | 256 MiB (previously listed as 128MiB for model A, but an upgrade to 256MiB was announced on 29 Feb 2012)
|-
| USB 2.0 ports:
| 1(provided by the BCM2835)
| 2 (via integrated USB hub)
|-
| Video outputs:<ref name="faq" />
| colspan="2" | Composite video|Composite RCA, HDMI (not at the same time)
|-
| Audio outputs:<ref name="faq" />
| colspan="2" | TRS connector|3.5 mm jack, HDMI
|-
| Audio inputs:
| colspan="2" | none, but a USB mic or sound-card could be added
|-
| Onboard Storage:
| colspan="2" | Secure Digital|SD / MMC / SDIO card slot
|-
| Onboard Network:<ref name="faq" />
| None
| 10/100 wired Ethernet RJ45
|-
| Low-level peripherals:
| colspan="2" | General Purpose Input/Output (GPIO) pins, Serial Peripheral Interface Bus (SPI), I²C, I²S<ref name="i2s">[http://www.raspberrypi.org/forum/features-and-requests/sad-about-removal-of-i2s-why-was-this-change-made Forum:Sad about removal of I2S. Why was this change made?]</ref>, Universal asynchronous receiver/transmitter (UART)
|-
| Real-time clock:<ref name="faq" />
| colspan="2" | None
|-
| Power ratings (provisional, from alpha board):
| 500mA, (2.5 Watt) <ref name="faq" />
| 700mA, (3.5 Watt)
|-
| Power source:<ref name="faq" />
| colspan="2" | 5V via Micro USB or GPIO header
|-
| Size:
| colspan="2" | 85.60mm x 53.98mm<ref>[http://www.raspberrypi.org/archives/344 Final PCB artwork]</ref> (3.370 × 2.125 inch)
|}

==Components==
[[File:Raspi-Model-AB-Mono-2-699x1024.png|400px|thumb|right|A diagram denoting the places of the different components on the Rpi, made by Paul
Beech, edited to show 256MB ram for both boards]]
(Provisional - some of the expansion interfaces won't be available on production boards)
(PCB IDs are those of the Model B Beta board)

* SoC: [http://www.broadcom.com/products/BCM2835 Broadcom BCM2835 media processor] ([http://www.raspberrypi.org/wp-content/uploads/2012/02/BCM2835-ARM-Peripherals.pdf datasheet], [[BCM2835 datasheet errata]]) system-on-chip featuring:
** CPU core: [http://infocenter.arm.com/help/topic/com.arm.doc.ddi0301h/DDI0301H_arm1176jzfs_r0p7_trm.pdf ARM1176JZF-S] ARM11 core clocked at 700MHz; ARM VFP. The ARM11 core implements the ARMv6 Architecture. For details on ARM instruction sets and naming conventions, see [http://en.wikipedia.org/wiki/ARM_architecture ARM architecture] and [http://en.wikipedia.org/wiki/List_of_ARM_microprocessor_cores List of ARM microprocessor cores].
** GPU core: a Broadcom [http://en.wikipedia.org/wiki/Videocore VideoCore] IV GPU providing OpenGL ES 1.1, OpenGL ES 2.0, hardware-accelerated OpenVG 1.1, Open EGL, OpenMAX and 1080p30 H.264 high-profile decode. There are 24 GFLOPS of general purpose compute and a bunch of texture filtering and DMA infrastructure. Eben worked on the architecture team for this and the Raspberry Pi team are looking at how they can make some of the proprietary features available to application programmers
** DSP core: There is a DSP, but there isn't currently a public API (Liz thinks the BC team are keen to make one available at some point)
** 256MiB of SDRAM. The RAM is physically stacked on top of the Broadcom media processor (package-on-package technology)
* LAN9512 ([http://www.smsc.com/media/Downloads_Public/Data_Briefs/9512db.pdf Data Brief] | [http://www.smsc.com/media/Downloads_Public/Data_Sheets/9512.pdf Data Sheet])'''(Model B)''' providing:
** 10/100Mb Ethernet (Auto-MDIX)<ref name=autoMDIX>[http://en.wikipedia.org/wiki/Medium_dependent_interface#Auto-MDIX Wikipedia:Auto-MDIX]</ref>
** 2x USB 2.0
* S1: Micro USB power jack (5v - Power Only)
* S2: DSI interface. 15-pin surface mounted flat flex connector, providing two data lanes, one clock lane, 3.3V and GND.
* S3: HDMI connector providing type A HDMI 1.3a out
* S4: Composite Video connector: RCA
* S5: MIPI CSI-2 interface. 15-pin surface mounted flat flex connector.
* S6: Audio connector: 3.5mm stereo jack (output only)
* S8: SD/MMC/SDIO memory card slot (underside)
* S7: Either 1x USB 2.0 '''(Model A)''' 2x USB 2.0 '''(Model B)'''
* P1: 26-pin 2.54mm header expansion, providing: see [[Rpi_Low-level_peripherals | Low-level peripherals]]
** 8 GPIOs at 3v3
** 2-pin UART serial console, 3v3 TTL (debug); or 2 GPIOs at 3v3
** I2C interface (3v3); or 2 GPIOs at 3v3
** SPI interface (3v3); or 5 GPIOs at 3v3
** 3v3, 5v and GND supply pins
** ARM JTAG (if pins are reconfigured in software)
** Second I2C interface (3v3) (if pins are reconfigured in software)
** I2S interface (if pins are reconfigured in software, hardware hack may be required<ref name="i2s"/>)
** 6 pins reserved for future use
* P2 8-pin 2.54mm header expansion providing GPU JTAG (ARM11 pinout, pin 7 is nofit for locating)
* P3: 7-pin 2.54mm header expansion (header not fitted), providing LAN9512 JTAG (pin 6 is nofit for locating)
* P4: 10/100Mb RJ45 Ethernet jack '''(Model B)'''
* TP1 and TP2: Test Points giving access to +5V and GND respectively
* 5 Status LEDs<ref name="PCBs">[http://www.raspberrypi.org/archives/402 RPiBlog Post: High-res pics of the PCBs]</ref><ref name="LEDs">[http://twitpic.com/8edlsf TwitPic:Photo of Board Powered]</ref><ref name="LEDsGPIO">[http://www.raspberrypi.org/forum/features-and-requests/what-do-the-status-indicator-leds-indicate-the-status-of Forum:What do the status indicator LEDs indicate the status of?]</ref>:
** D5(Yellow) - OK - SDCard Access (via GPIO16)
** D6(Red) - PWR - 3.3V Power
** D7(Green) - FDX - Full Duplex (LAN) '''(Model B)'''
** D8(Green) - LNK - Link/Activity (LAN) '''(Model B)'''
** D9(Yellow) - 10M - 10/100Mbit (LAN) '''(Model B)'''

* Board size: 85.60mm x 53.98mm. Overall height expected to be less than 25mm. <ref name="artwork">http://www.raspberrypi.org/archives/344</ref>
* Weight: <40g? (Alpha board weighs ~55g <ref>http://www.raspberrypi.org/?page_id=43&mingleforumaction=viewtopic&t=285.0</ref>)
* 6 layer PCB <ref name="artwork" />

==Schematic / Layout==

* [http://www.raspberrypi.org/wp-content/uploads/2011/11/gerbers2.png PCB screenshot]
* [http://lh3.googleusercontent.com/-uO4l8pwSLvU/TsQGbth6x6I/AAAAAAAAAkk/5zQMH3uKPiE/s829/Boardlayout.png PCB screenshot, labelled version]
* [http://www.raspberrypi.org/wp-content/uploads/2011/07/raspberry1.png PCB screenshot, Alpha board]
* [http://www.raspberrypi.org/wp-content/uploads/2011/12/psu.png Preliminary power supply schematic, Beta board]
* [http://dmkenr5gtnd8f.cloudfront.net/wp-content/uploads/2011/12/front1-300x225.jpg Low-resolution PCB front photo, Beta board]
* [http://dmkenr5gtnd8f.cloudfront.net/wp-content/uploads/2011/12/back-300x225.jpg Low-resolution PCB back photo, Beta board]
* [http://dmkenr5gtnd8f.cloudfront.net/wp-content/uploads/2011/12/front1.jpg High-resolution PCB front photo, Beta board]
* [http://dmkenr5gtnd8f.cloudfront.net/wp-content/uploads/2011/12/back.jpg High-resolution PCB back photo, Beta board]
* [http://www.raspberrypi.org/wp-content/uploads/2012/04/Raspberry-Pi-Schematics-R1.0.pdf Official schematics PDF] | [[RPi_schematic_errata|errata]]

==Power==

The board takes fixed 5V input, (with the 1V2 core voltage generated directly from the input using the internal switch-mode supply on the BCM2835 die).
This permits adoption of the micro USB form factor, which, in turn, prevents the user from inadvertently plugging in out-of-range power inputs; that would be dangerous, since the 5V would go straight to HDMI and output USB ports, even though the problem should be mitigated by some protections applied to the input power: The board provides a polarity protection diode, a voltage clamp, and a self-resetting semiconductor fuse.

Power consumption of the Raspberry Pi device is

* Board A: 5V, 500 mA (2.5W) '''minimum, without any devices connected''' (e.g. USB, Ethernet, HDMI)
* Board B: 5V, 700 mA (3.5W) '''minimum, without any devices connected''' (e.g. USB, Ethernet, HDMI)

You will need to provide a power supply that can provide enough current to power the device plus any connected peripherals, and taking into account inefficiencies of the supply itself and the cable between the power supply and Raspberry Pi. The Foundation and its distributors haven't made any formal recommendations of power supply yet, but opting for one that can supply at least 1A is advisable by the community.

*As the 5V rail is brought out in the [[Rpi_Low-level_peripherals | GPIO pins]], you can power the Rpi from there too. You should mind however, that those are ''behind'' the power protection circuitry , so you should provide your own.
* It is possible to power the Rpi from a powered USB hub the Rpi controls, but only on 'dumb' devices, that allow the port to supply the full current without waiting for the usb device to ask for it[http://www.raspberrypi.org/forum/general-discussion/power-pi-from-usb-hub-connected-to-pi]. As the power input of the Rpi doesn't have its data leads connected, there is no chance for a communication loop of some sorts.
* POE ([http://nl.wikipedia.org/wiki/Power_over_Ethernet power over ethernet]) is currently not available for the Rpi (but nobody stops you from taking your soldering iron and doing it yourself)

===Power Supply Problems===

There have been a number of problems reported that seem to be caused by inadequate power, this is an attempt to explain what is needed and the consequences of not having enough power.

The power required by the Pi will vary depending on how busy it is and what peripherals are connected.
* Running a GUI will take more power.
* The USB devices and Ethernet connection will take power.
* Running software will take power.

This means that it's difficult to say exactly how much power is needed. People have reported current requirements of between 300mA and 550mA. But it could in reality take more, especially for short periods. A simple multimeter will not show short surges on the power requirement. A surge in the power requirement for a few milliseconds will not be detectable by a meter but will be enough to cause problems.
If the board does not get enough power the voltage will drop. If it drops enough parts of the system will run unreliably because data can get corrupted. The USB IC runs on 5V and handles the USB and Ethernet ports so it's likely that this will be the first thing to fail. Problems seen are unreliable Ethernet connection and unreliable operation of the Keyboard and/or mouse.

There are several reasons why the power to the board may be inadequate:
* The PSU may not deliver enough power. Although the maximum power requirement is said to be 700mA, that is with no peripherals connected (USB, Ethernet etc), so a 1000mA PSU should be regarded as a minimum. This allows some leeway in case the power supply cannot deliver it's full power without the voltage dropping.
* The PSU is not regulated.
* The cable connecting the PSU to the Pi may not be good. People have reported cables with 4 ohms resistance on the power connections. At 500mA drain this would reduce a 5V supply to 3V.

====How Can I tell if the power supply is inadequate?====

Common symptoms of an inadequate power supply are
* Unreliable Ethernet or keyboard operation, especially if it's OK at first but not when the GUI is started.
* SD card errors at start up seems to be another symptom of poor power.

If you think you have a problem with your power supply, it is a good idea to check the actual voltage
on the Raspberry Pi circuit board. Two test points labelled TP1 and TP2 are provided on the circuit board
to facilitate voltage measurements.

Use a multimeter which is set to the range 20 volts DC (or 20v =). You should see a voltage between 4.75 and 5.25 volts. Anything outside this range indicates that you have a problem with your power supply or your power cable. Anything inside, but close to the limits, of this range ''may'' indicate a problem.

[[File:RPI_Test_Points.JPG|400px]] [[File:Voltmeter.JPG|250px]]

====Things that can cause problems====
* A USB connection on a TV or PC. The USB power supply specification is for up to 500mA and if the TV implements this then it can cause problems. The system may work initially but be unreliable because as it becomes more active the power requirement increases.
* A single supply from a powered hub. Most hubs seem to deliver more than the specified current but there's no guarantee. Check the power supply rating, it must be enough to supply everything that's connected to the hub.
* A power supply that is rated for less than 700mA may work some of the time.
* Adding a USB hard disk drive. A HDD will take quite a lot of power as it starts, maybe an amp or more. It the power supply for this also supplies the Pi then this could overload things and cause trouble.
* Some complex keyboards have been reported to take a considerable amount of power, maybe up to 500mA. The Pi cannot deliver this amount of power. Simpler budget keyboards may be better. If the system works with no keyboard attached but not with a keyboard then it's worth trying a different, simpler, keyboard.

====Summary====

* If you are having unreliable operation the first thing to do is check your power supply.
* Start with a good quality regulated power supply that is rated to provide 5V and at least 1A (1000mA).
* Use a good quality micro USB cable. Cables are notorious for giving trouble so be prepared to swap for another one.
* Not all power supplies will deliver what they claim.

==References==
<references/>

{{Template:Raspberry Pi}}

RPi Hardware

2012-04-22T13:03:06Z

Md84419: /* Power */

[[Category: RaspberryPi]]
{{Template:RPi_Hardware}}

==Introduction==
[[File:Rpi unpopulated pcb.jpg|thumb|right|The unpopulated Rpi bèta board]]
The first product is the size of a credit card, and is designed to plug into a TV or HDMI monitor. It comes in two variants, model A and B, with B having more features. The expected price is $25 for model A and $35 for model B. The [[Rpi Low-level peripherals| GPIO pins]] on each board allow the use of optional [[Rpi expansion boards|expansion boards]].

Those who are looking to set up a Raspberry Pi for the first time, see [[RPi Hardware Basic Setup]].

==Specifications==
{| class="wikitable"
!
! Model A
! Model B
|-
| Target price:<ref name="faq" >http://www.raspberrypi.org/faqs</ref>
| US$25 (GBP £16)
| US$35 (GBP £22)
|-
| System-on-a-chip (SoC):<ref name="faq" />
| colspan="2" | Broadcom BCM2835 (CPU + GPU + SDRAM)
|-
| CPU:
| colspan="2" | 700 MHz ARM11 ARM1176JZF-S core
|-
| GPU:
| colspan="2" | Broadcom VideoCore IV,OpenGL ES 2.0,OpenVG 1080p30 H.264 high-profile encode/decode
|-
| Memory (SDRAM)iB
| colspan="2" | 256 MiB (previously listed as 128MiB for model A, but an upgrade to 256MiB was announced on 29 Feb 2012)
|-
| USB 2.0 ports:
| 1(provided by the BCM2835)
| 2 (via integrated USB hub)
|-
| Video outputs:<ref name="faq" />
| colspan="2" | Composite video|Composite RCA, HDMI (not at the same time)
|-
| Audio outputs:<ref name="faq" />
| colspan="2" | TRS connector|3.5 mm jack, HDMI
|-
| Audio inputs:
| colspan="2" | none, but a USB mic or sound-card could be added
|-
| Onboard Storage:
| colspan="2" | Secure Digital|SD / MMC / SDIO card slot
|-
| Onboard Network:<ref name="faq" />
| None
| 10/100 wired Ethernet RJ45
|-
| Low-level peripherals:
| colspan="2" | General Purpose Input/Output (GPIO) pins, Serial Peripheral Interface Bus (SPI), I²C, I²S<ref name="i2s">[http://www.raspberrypi.org/forum/features-and-requests/sad-about-removal-of-i2s-why-was-this-change-made Forum:Sad about removal of I2S. Why was this change made?]</ref>, Universal asynchronous receiver/transmitter (UART)
|-
| Real-time clock:<ref name="faq" />
| colspan="2" | None
|-
| Power ratings (provisional, from alpha board):
| 500mA, (2.5 Watt) <ref name="faq" />
| 700mA, (3.5 Watt)
|-
| Power source:<ref name="faq" />
| colspan="2" | 5V via Micro USB or GPIO header
|-
| Size:
| colspan="2" | 85.60mm x 53.98mm<ref>[http://www.raspberrypi.org/archives/344 Final PCB artwork]</ref> (3.370 × 2.125 inch)
|}

==Components==
[[File:Raspi-Model-AB-Mono-2-699x1024.png|400px|thumb|right|A diagram denoting the places of the different components on the Rpi, made by Paul
Beech, edited to show 256MB ram for both boards]]
(Provisional - some of the expansion interfaces won't be available on production boards)
(PCB IDs are those of the Model B Beta board)

* SoC: [http://www.broadcom.com/products/BCM2835 Broadcom BCM2835 media processor] ([http://www.raspberrypi.org/wp-content/uploads/2012/02/BCM2835-ARM-Peripherals.pdf datasheet], [[BCM2835 datasheet errata]]) system-on-chip featuring:
** CPU core: [http://infocenter.arm.com/help/topic/com.arm.doc.ddi0301h/DDI0301H_arm1176jzfs_r0p7_trm.pdf ARM1176JZF-S] ARM11 core clocked at 700MHz; ARM VFP. The ARM11 core implements the ARMv6 Architecture. For details on ARM instruction sets and naming conventions, see [http://en.wikipedia.org/wiki/ARM_architecture ARM architecture] and [http://en.wikipedia.org/wiki/List_of_ARM_microprocessor_cores List of ARM microprocessor cores].
** GPU core: a Broadcom [http://en.wikipedia.org/wiki/Videocore VideoCore] IV GPU providing OpenGL ES 1.1, OpenGL ES 2.0, hardware-accelerated OpenVG 1.1, Open EGL, OpenMAX and 1080p30 H.264 high-profile decode. There are 24 GFLOPS of general purpose compute and a bunch of texture filtering and DMA infrastructure. Eben worked on the architecture team for this and the Raspberry Pi team are looking at how they can make some of the proprietary features available to application programmers
** DSP core: There is a DSP, but there isn't currently a public API (Liz thinks the BC team are keen to make one available at some point)
** 256MiB of SDRAM. The RAM is physically stacked on top of the Broadcom media processor (package-on-package technology)
* LAN9512 ([http://www.smsc.com/media/Downloads_Public/Data_Briefs/9512db.pdf Data Brief] | [http://www.smsc.com/media/Downloads_Public/Data_Sheets/9512.pdf Data Sheet])'''(Model B)''' providing:
** 10/100Mb Ethernet (Auto-MDIX)<ref name=autoMDIX>[http://en.wikipedia.org/wiki/Medium_dependent_interface#Auto-MDIX Wikipedia:Auto-MDIX]</ref>
** 2x USB 2.0
* S1: Micro USB power jack (5v - Power Only)
* S2: DSI interface. 15-pin surface mounted flat flex connector, providing two data lanes, one clock lane, 3.3V and GND.
* S3: HDMI connector providing type A HDMI 1.3a out
* S4: Composite Video connector: RCA
* S5: MIPI CSI-2 interface. 15-pin surface mounted flat flex connector.
* S6: Audio connector: 3.5mm stereo jack (output only)
* S8: SD/MMC/SDIO memory card slot (underside)
* S7: Either 1x USB 2.0 '''(Model A)''' 2x USB 2.0 '''(Model B)'''
* P1: 26-pin 2.54mm header expansion, providing: see [[Rpi_Low-level_peripherals | Low-level peripherals]]
** 8 GPIOs at 3v3
** 2-pin UART serial console, 3v3 TTL (debug); or 2 GPIOs at 3v3
** I2C interface (3v3); or 2 GPIOs at 3v3
** SPI interface (3v3); or 5 GPIOs at 3v3
** 3v3, 5v and GND supply pins
** ARM JTAG (if pins are reconfigured in software)
** Second I2C interface (3v3) (if pins are reconfigured in software)
** I2S interface (if pins are reconfigured in software, hardware hack may be required<ref name="i2s"/>)
** 6 pins reserved for future use
* P2 8-pin 2.54mm header expansion providing GPU JTAG (ARM11 pinout, pin 7 is nofit for locating)
* P3: 7-pin 2.54mm header expansion (header not fitted), providing LAN9512 JTAG (pin 6 is nofit for locating)
* P4: 10/100Mb RJ45 Ethernet jack '''(Model B)'''
* TP1 and TP2: Test Points giving access to +5V and GND respectively
* 5 Status LEDs<ref name="PCBs">[http://www.raspberrypi.org/archives/402 RPiBlog Post: High-res pics of the PCBs]</ref><ref name="LEDs">[http://twitpic.com/8edlsf TwitPic:Photo of Board Powered]</ref><ref name="LEDsGPIO">[http://www.raspberrypi.org/forum/features-and-requests/what-do-the-status-indicator-leds-indicate-the-status-of Forum:What do the status indicator LEDs indicate the status of?]</ref>:
** D5(Yellow) - OK - SDCard Access (via GPIO16)
** D6(Red) - PWR - 3.3V Power
** D7(Green) - FDX - Full Duplex (LAN) '''(Model B)'''
** D8(Green) - LNK - Link/Activity (LAN) '''(Model B)'''
** D9(Yellow) - 10M - 10/100Mbit (LAN) '''(Model B)'''

* Board size: 85.60mm x 53.98mm. Overall height expected to be less than 25mm. <ref name="artwork">http://www.raspberrypi.org/archives/344</ref>
* Weight: <40g? (Alpha board weighs ~55g <ref>http://www.raspberrypi.org/?page_id=43&mingleforumaction=viewtopic&t=285.0</ref>)
* 6 layer PCB <ref name="artwork" />

==Schematic / Layout==

* [http://www.raspberrypi.org/wp-content/uploads/2011/11/gerbers2.png PCB screenshot]
* [http://lh3.googleusercontent.com/-uO4l8pwSLvU/TsQGbth6x6I/AAAAAAAAAkk/5zQMH3uKPiE/s829/Boardlayout.png PCB screenshot, labelled version]
* [http://www.raspberrypi.org/wp-content/uploads/2011/07/raspberry1.png PCB screenshot, Alpha board]
* [http://www.raspberrypi.org/wp-content/uploads/2011/12/psu.png Preliminary power supply schematic, Beta board]
* [http://dmkenr5gtnd8f.cloudfront.net/wp-content/uploads/2011/12/front1-300x225.jpg Low-resolution PCB front photo, Beta board]
* [http://dmkenr5gtnd8f.cloudfront.net/wp-content/uploads/2011/12/back-300x225.jpg Low-resolution PCB back photo, Beta board]
* [http://dmkenr5gtnd8f.cloudfront.net/wp-content/uploads/2011/12/front1.jpg High-resolution PCB front photo, Beta board]
* [http://dmkenr5gtnd8f.cloudfront.net/wp-content/uploads/2011/12/back.jpg High-resolution PCB back photo, Beta board]
* [http://www.raspberrypi.org/wp-content/uploads/2012/04/Raspberry-Pi-Schematics-R1.0.pdf Official schematics PDF] | [[RPi_schematic_errata|errata]]

==Power==

The board takes fixed 5V input, (with the 1V2 core voltage generated directly from the input using the internal switch-mode supply on the BCM2835 die).
This permits adoption of the micro USB form factor, which, in turn, prevents the user from inadvertently plugging in out-of-range power inputs; that would be dangerous, since the 5V would go straight to HDMI and output USB ports, even though the problem should be mitigated by some protections applied to the input power: The board provides a polarity protection diode, a voltage clamp, and a self-resetting semiconductor fuse.

Power consumption of the Raspberry Pi device is

* Board A: 5V, 500 mA (2.5W) '''minimum, without any devices connected''' (e.g. USB, Ethernet, HDMI)
* Board B: 5V, 700 mA (3.5W) '''minimum, without any devices connected''' (e.g. USB, Ethernet, HDMI)

You will need to provide a power supply that can provide enough current to power the device plus any connected peripherals, and taking into account inefficiencies of the supply itself and the cable between the power supply and Raspberry Pi. The Foundation and its distributors haven't made any formal recommendations of power supply yet, but opting for one that can supply at least 1A is advisable by the community.

*As the 5V rail is brought out in the [[Rpi_Low-level_peripherals | GPIO pins]], you can power the Rpi from there too. You should mind however, that those are ''behind'' the power protection circuitry , so you should provide your own.
* It is possible to power the Rpi from a powered USB hub the Rpi controls, but only on 'dumb' devices, that allow the port to supply the full current without waiting for the usb device to ask for it[http://www.raspberrypi.org/forum/general-discussion/power-pi-from-usb-hub-connected-to-pi]. As the power input of the Rpi doesn't have its data leads connected, there is no chance for a communication loop of some sorts.
* POE ([http://nl.wikipedia.org/wiki/Power_over_Ethernet power over ethernet]) is currently not available for the Rpi (but nobody stops you from taking your soldering iron and doing it yourself)

===Power Supply Problems===

There have been a number of problems reported that seem to be caused by inadequate power, this is an attempt to explain what is needed and the consequences of not having enough power.

The power required by the Pi will vary depending on how busy it is and what peripherals are connected.
* Running a GUI will take more power.
* The USB devices and Ethernet connection will take power.
* Running software will take power.

This means that it's difficult to say exactly how much power is needed. People have reported current requirements of between 300mA and 550mA. But it could in reality take more, especially for short periods. A simple multimeter will not show short surges on the power requirement. A surge in the power requirement for a few milliseconds will not be detectable by a meter but will be enough to cause problems.
If the board does not get enough power the voltage will drop. If it drops enough parts of the system will run unreliably because data can get corrupted. The USB IC runs on 5V and handles the USB and Ethernet ports so it's likely that this will be the first thing to fail. Problems seen are unreliable Ethernet connection and unreliable operation of the Keyboard and/or mouse.

There are several reasons why the power to the board may be inadequate:
* The PSU may not deliver enough power. Although the maximum power requirement is said to be 700mA, that is with no peripherals connected (USB, Ethernet etc), so a 1000mA PSU should be regarded as a minimum. This allows some leeway in case the power supply cannot deliver it's full power without the voltage dropping.
* The PSU is not regulated.
* The cable connecting the PSU to the Pi may not be good. People have reported cables with 4 ohms resistance on the power connections. At 500mA drain this would reduce a 5V supply to 3V.

====How Can I tell if the power supply is inadequate?====

Common symptoms of an inadequate power supply are
* Unreliable Ethernet or keyboard operation, especially if it's OK at first but not when the GUI is started.
* SD card errors at start up seems to be another symptom of poor power.

If you think you have a problem with your power supply, it is a good idea to check the actual voltage
on the Raspberry Pi circuit board. Two test points labelled TP1 and TP2 are provided on the circuit board
to facilitate voltage measurements.

Use a multimeter which is set to the range 20 volts DC (or 20v =). You should see a voltage between 4.75 and 5.25 volts. Anything outside this range indicates that you have a problem with your power supply or your power cable.

[[File:RPI_Test_Points.JPG|400px]] [[File:Voltmeter.JPG|250px]]

====Things that can cause problems====
* A USB connection on a TV or PC. The USB power supply specification is for up to 500mA and if the TV implements this then it can cause problems. The system may work initially but be unreliable because as it becomes more active the power requirement increases.
* A single supply from a powered hub. Most hubs seem to deliver more than the specified current but there's no guarantee. Check the power supply rating, it must be enough to supply everything that's connected to the hub.
* A power supply that is rated for less than 700mA may work some of the time.
* Adding a USB hard disk drive. A HDD will take quite a lot of power as it starts, maybe an amp or more. It the power supply for this also supplies the Pi then this could overload things and cause trouble.
* Some complex keyboards have been reported to take a considerable amount of power, maybe up to 500mA. The Pi cannot deliver this amount of power. Simpler budget keyboards may be better. If the system works with no keyboard attached but not with a keyboard then it's worth trying a different, simpler, keyboard.

====Summary====

* If you are having unreliable operation the first thing to do is check your power supply.
* Start with a good quality regulated power supply that is rated to provide 5V and at least 1A (1000mA).
* Use a good quality micro USB cable. Cables are notorious for giving trouble so be prepared to swap for another one.
* Not all power supplies will deliver what they claim.

==References==
<references/>

{{Template:Raspberry Pi}}

RPi Hub

2012-04-22T11:59:05Z

Md84419: /* Now shipping to customers */

{{TOC right}}{{Template:Hub_Flags}} 
{{Clear}}
'''The Raspberry Pi wiki pages on this site are a community work - the Raspberry Pi Foundation is not responsible for content on these pages.'''

==Now shipping to customers==
Premier Farnell and RS Components have started shipping to customers. Congratulations to those at the front of the queue.

Work is ongoing to clear the backlog of orders.

See the [[RPi Buying Guide | Buying Guide]] on how to order one, or visit the [http://www.raspberrypi.org Raspberry Pi Foundation Home Page]

==About==
[[File:RpiFront.jpg|300px|thumb|right|The Rpi beta board (model B)]]

The Raspberry Pi (short: RPi or RasPi) is an ultra-low-cost credit-card sized Linux computer which was conceived with the primary goal of teaching computer programming to children. It was developed by the [http://www.raspberrypi.org Raspberry Pi Foundation], which is a UK registered charity (Registration Number 1129409). The foundation exists to promote the study of computer science and related topics, especially at school level, and to put the fun back into learning computing. We expect this computer to have many other applications both in the developed and the developing world ([[RPi_Philosophy|Read more]]).

* You can get the latest news from the [http://www.raspberrypi.org Foundation Home Page], the [http://twitter.com/intent/user?screen_name=Raspberry_Pi Twitter Feed] or in the [http://www.raspberrypi.org/forum/general-discussion/news-articles-and-blog-posts-about-raspberry-pi forums].
* For Raspberry Pi frequently asked questions see the [[R-Pi FAQ]] or the [http://www.raspberrypi.org/?page_id=8 Raspberry Pi Foundation's FAQ] page.
* Products are RoHS, CE, FCC, CTick and CSA compliant. Please contact the distributor from whom you purchased your Raspberry Pi device for details regarding WEEE in your country.
* Expected cost: ~16GBP or 25USD Model A, ~23GBP or 35USD for Model B. For information about availability and shipping see the [[RPi Buying Guide | Buying Guide]].

===History===
* Confused about seeing different versions of the board? Visit the [[Rpi HardwareHistory | History of the Raspberry Pi Hardware]] for information about the past versions.

* RegHardware's very detailed analysis is [http://www.reghardware.com/2011/11/28/raspberry_pi/ well worth a read]. Wikipedia also has [http://en.wikipedia.org/wiki/Raspberry_Pi an entry].

* Russell Davis (aka forum admin [[ukscone]]) has a series of blog articles recording his perspective of the [http://russelldavis.org/2012/01/14/the-raspberry-pi-part-one/ Raspberry Pi story] in several parts from the beginning.

* You will often hear mention of the BBC Micro Computer when people talk about the purpose of the Raspberry Pi Foundation. See this article on the [http://www.reghardware.com/2011/11/30/bbc_micro_model_b_30th_anniversary/ history of the BBC Micro Computer].

* Here's a video from the Financial Times, with three different groups evaluating the raspberry pi: http://video.ft.com/v/1498254373001/Taste-testing-the-Raspberry-Pi (March 2012)

==Getting Started==
{| border="1" style="background:transparent;"
| style="width:33%; vertical-align:top; border:1px solid #aaa;" |
===[[Buying RPi |Buying Guide]]===
----
Where can I get one and for how much?
* Raspberry Pi can only be purchased via their official distribution partners - detailed information can be found on the [[Buying RPi | RPi Buying Guide]] page.

* Additional accessories, peripherals and merchandise will also be available through the [http://www.raspberrypi.com/ Raspberry Pi Shop].

| style="width:33%; vertical-align:top; border:1px solid #aaa;" |

===[[RPi Hardware Basic Setup | Basic Setup]]===
----
First little Raspberry Pi Steps...
* Ensure you have all the [[RPi Hardware Basic Setup#Typical_Hardware_You_Will_Need |equipment]] you need to go with your Raspberry Pi.
* Become familiar with the [[RPi Hardware Basic Setup#Connecting_Together | board layout and connect]] it ready for power up.
* Prepare your SD card with the [http://www.raspberrypi.org/archives/805 Pi Fedora Remix Operating System] - more details see [http://zenit.senecac.on.ca/wiki/index.php/Raspberry_Pi_Fedora_Remix Fedora's Raspberry Pi wiki].

* '''Having problems? Try the [http://elinux.org/R-Pi_Troubleshooting Troubleshooting] page.'''

| style="width:33%; vertical-align:top; border:1px solid #aaa;" |

===[[RPi Beginners | Beginners Guide]]===
----
You've just got your new Raspberry Pi device - what now?
* [[RPi Beginners | Beginners Guide]]

* Learn about the basics with the [http://h2g2.com/dna/h2g2/A13735596 H2G2 - Introducing the Raspberry Pi] entry.

* Get started with some basic projects and tutorials:
[[RPi Tutorial Easy GPIO Hardware & Software | Easy GPIO Hardware & Software]] - in-progress at the moment
Example projects/tuts which can be linked from here
(or from within a beginners guide page perhaps):
Setup XBMC media centre
Programming tutorials (Liams YouTube etc)
Easy GPIO (when complete or similar thing).
Also links to some basic linux user guides.

* Take a look through the [[R-Pi_Hub#Community|Community]] section, which contains a range of beginner and advanced tutorials and guides, as well as groups to help you find like-minded developers.

|}

==Resources==
{| border="1" style="background:transparent;"

| style="width:33%; vertical-align:top; border:1px solid #aaa; padding-left:5px;" |

===[[RPi Hardware|Hardware]] & [[RPi VerifiedPeripherals|Peripherals]]===
----

*The Model B is more advanced than the Model A - see [[RPi Hardware]].
*The RPi can be plugged into a [[RPi Screens|suitable TV or monitor]].
*The unit will support a range of [[RPi VerifiedPeripherals |USB devices, peripherals and accessories]].
*The [[Rpi Low-level peripherals| Low-level interfaces]] allow the use of optional [[RPi Expansion Boards|Expansion Boards]] in a wide range of projects.
*For more advanced issues including see [[RPi Advanced Setup|Advanced Setup]].
*[[RPi Peripherals|Setting up peripherals - examples/HowTos]]
| style="width:33%; vertical-align:top; border:1px solid #aaa; padding-left:5px;" |

===[[Rpi_Software|Software]] & [[RPi_Distributions|OS Distributions]]===
----
The Raspberry Pi will run a range of OS Distributions and run a variety of software.
* See [[RPi Software|Software]] for an overview, and [[RPi Distributions|OS Distributions]] for supported operating system and pre-configured 'images'.
*Main OS distributions include [[RPi Distributions#Debian_ARM | Debian ARM]], [[RPi Distributions#Fedora | Fedora]], [[RPi Distributions#KidsRuby | KidsRuby]] and [http://puppylinux.org/wikka/PuppySchoolRaspberryPi Raspberry PupPy] from Puppy Linux.
*Advice is also available if you want to [[Rpi_kernel_compilation|compile a kernel]] or [[RPi_Performance|test the Pi's performance]].
*The Raspberry Pi supports a wide range of [[RPi Programming|programming languages]], with many tutorials available.

| style="width:33%; vertical-align:top; border:1px solid #aaa; padding-left:5px;" |

===[[RPi Documentation|Documentation]]===
----
Documentation relating to the Raspberry Pi can be found [[RPi Documentation|here]].

[[RPi DatasheetCategories|Frambozenier.org Documentation Project Datasheets]]

Example documents which can be linked from here (or sub page):
Official Datasheets
White Papers
User Manuals
Recommended books (perhaps)

===[[R-Pi Troubleshooting|How to fix common problems]]===
|}

==Community==
{| border="1" style="background:transparent;"
| style="width:33%; vertical-align:top; border:1px solid #aaa; padding-left:5px;" |

===[[RPi Projects |Projects]], [[RPi Guides |Guides]] & [[RPi Tutorials |Tutorials]]===
----
*An important source of information and guides is the [http://www.raspberrypi.org/forum Official Forum].
*Knowledgeable users may want to review and help out with the [[RPi Tasks |Tasks page]].
*Get started by following some of the many [[RPi Tutorials | Tutorials]].
*Common tasks and useful tip are available through the [[RPi Guides | Guides page]].
*Projects can be found, and added to, on the [[RPi Projects |Projects page]].

| style="width:33%; vertical-align:top; border:1px solid #aaa; padding-left:5px;" |

===[[Rpi Education|Schools, Universities, Clubs & Groups]]===
----
*The Raspberry Pi Foundation's aims include encouraging education. Several groups including [http://www.computingatschool.org.uk/ Computing At School] aim to bring Computing Science back into schools.
*Go to the [[Rpi Education|Education Page]] to add your project and find helpful links.

| style="width:33%; vertical-align:top; border:1px solid #aaa; padding-left:5px;" |
===[[RPi Community |Supporting Communities]]===
----
The [[RPi Community |Raspberry Pi Community]] is steadily growing:
*[http://www.raspberrypi.org/forum The Official Raspberry Pi Forum]

*[http://www.frambozenbier.org/index.php/ 'Frambozenbier' (Raspberry Pi Homebrew)]

*[http://www.raspberrymod.com/ Raspberrymod] and [http://www.raspberrypiforums.com/forum RPiforums] Un-Official Raspberry Pi Discussion Boards

*[http://www.raspberrypi-spanish.es Non-official community of Raspberry Pi in spanish language]

*[http://www.worldofpi/com/ World Of Pi] A forum based on all things Raspberry Pi.

*[[RPi Community Magazine]] - User contributed eMagazine, get involved!
|}

==About the RPi Wiki==

'''Do not be afraid to add your bit, content is vital for the wiki to function.'''

[[File:Rasp_turn_around.gif|200px|thumb|right|A 3D rendering of the Raspberry Pi logo by forum user Antario. [http://www.raspberrypi.org/forum/projects-and-collaboration-general/raspberry-pi-3d-logo-animation Source]]]
This wiki is '''open''' for the community. You are encouraged to sign up and add your own projects, guides and correct anything within it. It is important that users like you continue to add to and grow this wiki, that way others will be able to come and do the same making the wiki a valuable resource. See [[Help:Editing | Help Editing The Wiki]] and the [[Special:Upload | Upload File]] link (on the left sidebar) to reference images.

=== Translations ===

The wiki is being translated into several languages, some of which can be seen on the hub banner above. Current languages include:

* English: [[R-Pi Hub]]
* French: [[FR:R-Pi Hub]]
* German: [[DE:R-Pi Hub]]
* Greek: [[EL:R-Pi Hub]]
* Hungarian: [[HU:R-Pi Hub]]
* Japanese: [[JP:R-Pi_Hub]]
* Polish: [[PL:R-Pi_Hub]]
* Portugese: [[pt-BR:Raspberry Pi Board]]
* Romanian: [[RO:R-Pi_Hub]]
* Russian: [[RU:RaspberryPiBoard]]
* Spanish: [[ES:R-Pi Hub]]
* Italiano: [[IT:R-Pi Hub]]
* Chinese:[[CH:R-Pi Hub]]

Any help translating would be greatly appreciated. Thank you to those who have already contributed!

===Admins/Contributors===

Please see the [[Talk:R-Pi_Hub]] page for outstanding issues and discussions regarding the RPi Hub and related pages.
Also , have look at [[RPi Wiki Best Practice]]. Discuss it [[Talk:RPi Wiki Best Practice | here ]]

To share your thoughts, comments, thanks and interesting articles, see our [[RPi Visitor Book |Visitor Book]].

''Big thanks to elinux.org and their groups for the wiki space and content from which these pages have been grown.''

=References=
<references/>

{{Template:Raspberry Pi}}
[[Category:RaspberryPi]]

RPi Hub

2012-04-22T11:58:37Z

Md84419: /* About */

{{TOC right}}{{Template:Hub_Flags}} 
{{Clear}}
==Now shipping to customers==
Premier Farnell and RS Components have started shipping to customers. Congratulations to those at the front of the queue.

Work is ongoing to clear the backlog of orders.

See the [[RPi Buying Guide | Buying Guide]] on how to order one, or visit the [http://www.raspberrypi.org Raspberry Pi Foundation Home Page]

'''The Raspberry Pi wiki pages on this site are a community work - the Raspberry Pi Foundation is not responsible for content on these pages.'''

==About==
[[File:RpiFront.jpg|300px|thumb|right|The Rpi beta board (model B)]]

The Raspberry Pi (short: RPi or RasPi) is an ultra-low-cost credit-card sized Linux computer which was conceived with the primary goal of teaching computer programming to children. It was developed by the [http://www.raspberrypi.org Raspberry Pi Foundation], which is a UK registered charity (Registration Number 1129409). The foundation exists to promote the study of computer science and related topics, especially at school level, and to put the fun back into learning computing. We expect this computer to have many other applications both in the developed and the developing world ([[RPi_Philosophy|Read more]]).

* You can get the latest news from the [http://www.raspberrypi.org Foundation Home Page], the [http://twitter.com/intent/user?screen_name=Raspberry_Pi Twitter Feed] or in the [http://www.raspberrypi.org/forum/general-discussion/news-articles-and-blog-posts-about-raspberry-pi forums].
* For Raspberry Pi frequently asked questions see the [[R-Pi FAQ]] or the [http://www.raspberrypi.org/?page_id=8 Raspberry Pi Foundation's FAQ] page.
* Products are RoHS, CE, FCC, CTick and CSA compliant. Please contact the distributor from whom you purchased your Raspberry Pi device for details regarding WEEE in your country.
* Expected cost: ~16GBP or 25USD Model A, ~23GBP or 35USD for Model B. For information about availability and shipping see the [[RPi Buying Guide | Buying Guide]].

===History===
* Confused about seeing different versions of the board? Visit the [[Rpi HardwareHistory | History of the Raspberry Pi Hardware]] for information about the past versions.

* RegHardware's very detailed analysis is [http://www.reghardware.com/2011/11/28/raspberry_pi/ well worth a read]. Wikipedia also has [http://en.wikipedia.org/wiki/Raspberry_Pi an entry].

* Russell Davis (aka forum admin [[ukscone]]) has a series of blog articles recording his perspective of the [http://russelldavis.org/2012/01/14/the-raspberry-pi-part-one/ Raspberry Pi story] in several parts from the beginning.

* You will often hear mention of the BBC Micro Computer when people talk about the purpose of the Raspberry Pi Foundation. See this article on the [http://www.reghardware.com/2011/11/30/bbc_micro_model_b_30th_anniversary/ history of the BBC Micro Computer].

* Here's a video from the Financial Times, with three different groups evaluating the raspberry pi: http://video.ft.com/v/1498254373001/Taste-testing-the-Raspberry-Pi (March 2012)

==Getting Started==
{| border="1" style="background:transparent;"
| style="width:33%; vertical-align:top; border:1px solid #aaa;" |
===[[Buying RPi |Buying Guide]]===
----
Where can I get one and for how much?
* Raspberry Pi can only be purchased via their official distribution partners - detailed information can be found on the [[Buying RPi | RPi Buying Guide]] page.

* Additional accessories, peripherals and merchandise will also be available through the [http://www.raspberrypi.com/ Raspberry Pi Shop].

| style="width:33%; vertical-align:top; border:1px solid #aaa;" |

===[[RPi Hardware Basic Setup | Basic Setup]]===
----
First little Raspberry Pi Steps...
* Ensure you have all the [[RPi Hardware Basic Setup#Typical_Hardware_You_Will_Need |equipment]] you need to go with your Raspberry Pi.
* Become familiar with the [[RPi Hardware Basic Setup#Connecting_Together | board layout and connect]] it ready for power up.
* Prepare your SD card with the [http://www.raspberrypi.org/archives/805 Pi Fedora Remix Operating System] - more details see [http://zenit.senecac.on.ca/wiki/index.php/Raspberry_Pi_Fedora_Remix Fedora's Raspberry Pi wiki].

* '''Having problems? Try the [http://elinux.org/R-Pi_Troubleshooting Troubleshooting] page.'''

| style="width:33%; vertical-align:top; border:1px solid #aaa;" |

===[[RPi Beginners | Beginners Guide]]===
----
You've just got your new Raspberry Pi device - what now?
* [[RPi Beginners | Beginners Guide]]

* Learn about the basics with the [http://h2g2.com/dna/h2g2/A13735596 H2G2 - Introducing the Raspberry Pi] entry.

* Get started with some basic projects and tutorials:
[[RPi Tutorial Easy GPIO Hardware & Software | Easy GPIO Hardware & Software]] - in-progress at the moment
Example projects/tuts which can be linked from here
(or from within a beginners guide page perhaps):
Setup XBMC media centre
Programming tutorials (Liams YouTube etc)
Easy GPIO (when complete or similar thing).
Also links to some basic linux user guides.

* Take a look through the [[R-Pi_Hub#Community|Community]] section, which contains a range of beginner and advanced tutorials and guides, as well as groups to help you find like-minded developers.

|}

==Resources==
{| border="1" style="background:transparent;"

| style="width:33%; vertical-align:top; border:1px solid #aaa; padding-left:5px;" |

===[[RPi Hardware|Hardware]] & [[RPi VerifiedPeripherals|Peripherals]]===
----

*The Model B is more advanced than the Model A - see [[RPi Hardware]].
*The RPi can be plugged into a [[RPi Screens|suitable TV or monitor]].
*The unit will support a range of [[RPi VerifiedPeripherals |USB devices, peripherals and accessories]].
*The [[Rpi Low-level peripherals| Low-level interfaces]] allow the use of optional [[RPi Expansion Boards|Expansion Boards]] in a wide range of projects.
*For more advanced issues including see [[RPi Advanced Setup|Advanced Setup]].
*[[RPi Peripherals|Setting up peripherals - examples/HowTos]]
| style="width:33%; vertical-align:top; border:1px solid #aaa; padding-left:5px;" |

===[[Rpi_Software|Software]] & [[RPi_Distributions|OS Distributions]]===
----
The Raspberry Pi will run a range of OS Distributions and run a variety of software.
* See [[RPi Software|Software]] for an overview, and [[RPi Distributions|OS Distributions]] for supported operating system and pre-configured 'images'.
*Main OS distributions include [[RPi Distributions#Debian_ARM | Debian ARM]], [[RPi Distributions#Fedora | Fedora]], [[RPi Distributions#KidsRuby | KidsRuby]] and [http://puppylinux.org/wikka/PuppySchoolRaspberryPi Raspberry PupPy] from Puppy Linux.
*Advice is also available if you want to [[Rpi_kernel_compilation|compile a kernel]] or [[RPi_Performance|test the Pi's performance]].
*The Raspberry Pi supports a wide range of [[RPi Programming|programming languages]], with many tutorials available.

| style="width:33%; vertical-align:top; border:1px solid #aaa; padding-left:5px;" |

===[[RPi Documentation|Documentation]]===
----
Documentation relating to the Raspberry Pi can be found [[RPi Documentation|here]].

[[RPi DatasheetCategories|Frambozenier.org Documentation Project Datasheets]]

Example documents which can be linked from here (or sub page):
Official Datasheets
White Papers
User Manuals
Recommended books (perhaps)

===[[R-Pi Troubleshooting|How to fix common problems]]===
|}

==Community==
{| border="1" style="background:transparent;"
| style="width:33%; vertical-align:top; border:1px solid #aaa; padding-left:5px;" |

===[[RPi Projects |Projects]], [[RPi Guides |Guides]] & [[RPi Tutorials |Tutorials]]===
----
*An important source of information and guides is the [http://www.raspberrypi.org/forum Official Forum].
*Knowledgeable users may want to review and help out with the [[RPi Tasks |Tasks page]].
*Get started by following some of the many [[RPi Tutorials | Tutorials]].
*Common tasks and useful tip are available through the [[RPi Guides | Guides page]].
*Projects can be found, and added to, on the [[RPi Projects |Projects page]].

| style="width:33%; vertical-align:top; border:1px solid #aaa; padding-left:5px;" |

===[[Rpi Education|Schools, Universities, Clubs & Groups]]===
----
*The Raspberry Pi Foundation's aims include encouraging education. Several groups including [http://www.computingatschool.org.uk/ Computing At School] aim to bring Computing Science back into schools.
*Go to the [[Rpi Education|Education Page]] to add your project and find helpful links.

| style="width:33%; vertical-align:top; border:1px solid #aaa; padding-left:5px;" |
===[[RPi Community |Supporting Communities]]===
----
The [[RPi Community |Raspberry Pi Community]] is steadily growing:
*[http://www.raspberrypi.org/forum The Official Raspberry Pi Forum]

*[http://www.frambozenbier.org/index.php/ 'Frambozenbier' (Raspberry Pi Homebrew)]

*[http://www.raspberrymod.com/ Raspberrymod] and [http://www.raspberrypiforums.com/forum RPiforums] Un-Official Raspberry Pi Discussion Boards

*[http://www.raspberrypi-spanish.es Non-official community of Raspberry Pi in spanish language]

*[http://www.worldofpi/com/ World Of Pi] A forum based on all things Raspberry Pi.

*[[RPi Community Magazine]] - User contributed eMagazine, get involved!
|}

==About the RPi Wiki==

'''Do not be afraid to add your bit, content is vital for the wiki to function.'''

[[File:Rasp_turn_around.gif|200px|thumb|right|A 3D rendering of the Raspberry Pi logo by forum user Antario. [http://www.raspberrypi.org/forum/projects-and-collaboration-general/raspberry-pi-3d-logo-animation Source]]]
This wiki is '''open''' for the community. You are encouraged to sign up and add your own projects, guides and correct anything within it. It is important that users like you continue to add to and grow this wiki, that way others will be able to come and do the same making the wiki a valuable resource. See [[Help:Editing | Help Editing The Wiki]] and the [[Special:Upload | Upload File]] link (on the left sidebar) to reference images.

=== Translations ===

The wiki is being translated into several languages, some of which can be seen on the hub banner above. Current languages include:

* English: [[R-Pi Hub]]
* French: [[FR:R-Pi Hub]]
* German: [[DE:R-Pi Hub]]
* Greek: [[EL:R-Pi Hub]]
* Hungarian: [[HU:R-Pi Hub]]
* Japanese: [[JP:R-Pi_Hub]]
* Polish: [[PL:R-Pi_Hub]]
* Portugese: [[pt-BR:Raspberry Pi Board]]
* Romanian: [[RO:R-Pi_Hub]]
* Russian: [[RU:RaspberryPiBoard]]
* Spanish: [[ES:R-Pi Hub]]
* Italiano: [[IT:R-Pi Hub]]
* Chinese:[[CH:R-Pi Hub]]

Any help translating would be greatly appreciated. Thank you to those who have already contributed!

===Admins/Contributors===

Please see the [[Talk:R-Pi_Hub]] page for outstanding issues and discussions regarding the RPi Hub and related pages.
Also , have look at [[RPi Wiki Best Practice]]. Discuss it [[Talk:RPi Wiki Best Practice | here ]]

To share your thoughts, comments, thanks and interesting articles, see our [[RPi Visitor Book |Visitor Book]].

''Big thanks to elinux.org and their groups for the wiki space and content from which these pages have been grown.''

=References=
<references/>

{{Template:Raspberry Pi}}
[[Category:RaspberryPi]]

RPi Philosophy

2012-04-22T11:45:45Z

Md84419: Created page with "Category: RaspberryPi =Overview= The Raspberry Pi Foundation is a UK registered charity (Registration Number 1129409), based in Cambridge, which exists to promote the study..."

RPi VerifiedPeripherals

2012-04-21T15:30:34Z

Md84419: /* Working SD Cards */

2012-04-20T10:05:29Z

Md84419: /* Unverified typos */

RPi Hardware

2012-04-20T07:59:34Z

Md84419: /* Schematic / Layout */

[[Category: RaspberryPi]]
{{Template:RPi_Hardware}}

==Introduction==
[[File:Rpi unpopulated pcb.jpg|thumb|right|The unpopulated Rpi bèta board]]
The first product is the size of a credit card, and is designed to plug into a TV or HDMI monitor. It comes in two variants, model A and B, with B having more features. The expected price is $25 for model A and $35 for model B. The [[Rpi Low-level peripherals| GPIO pins]] on each board allow the use of optional [[Rpi expansion boards|expansion boards]].

Those who are looking to set up a Raspberry Pi for the first time, see [[RPi Hardware Basic Setup]].

==Specifications==
{| class="wikitable"
!
! Model A
! Model B
|-
| Target price:<ref name="faq" >http://www.raspberrypi.org/faqs</ref>
| US$25 (GBP £16)
| US$35 (GBP £22)
|-
| System-on-a-chip (SoC):<ref name="faq" />
| colspan="2" | Broadcom BCM2835 (CPU + GPU + SDRAM)
|-
| CPU:
| colspan="2" | 700 MHz ARM11 ARM1176JZF-S core
|-
| GPU:
| colspan="2" | Broadcom VideoCore IV,OpenGL ES 2.0,OpenVG 1080p30 H.264 high-profile encode/decode
|-
| Memory (SDRAM)iB
| colspan="2" | 256 MiB (previously listed as 128MiB for model A, but an upgrade to 256MiB was announced on 29 Feb 2012)
|-
| USB 2.0 ports:
| 1(provided by the BCM2835)
| 2 (via integrated USB hub)
|-
| Video outputs:<ref name="faq" />
| colspan="2" | Composite video|Composite RCA, HDMI (not at the same time)
|-
| Audio outputs:<ref name="faq" />
| colspan="2" | TRS connector|3.5 mm jack, HDMI
|-
| Audio inputs:
| colspan="2" | none, but a USB mic or sound-card could be added
|-
| Onboard Storage:
| colspan="2" | Secure Digital|SD / MMC / SDIO card slot
|-
| Onboard Network:<ref name="faq" />
| None
| 10/100 wired Ethernet RJ45
|-
| Low-level peripherals:
| colspan="2" | General Purpose Input/Output (GPIO) pins, Serial Peripheral Interface Bus (SPI), I²C, I²S<ref name="i2s">[http://www.raspberrypi.org/forum/features-and-requests/sad-about-removal-of-i2s-why-was-this-change-made Forum:Sad about removal of I2S. Why was this change made?]</ref>, Universal asynchronous receiver/transmitter (UART)
|-
| Real-time clock:<ref name="faq" />
| colspan="2" | None
|-
| Power ratings (provisional, from alpha board):
| 500mA, (2.5 Watt) <ref name="faq" />
| 700mA, (3.5 Watt)
|-
| Power source:<ref name="faq" />
| colspan="2" | 5V via Micro USB or GPIO header
|-
| Size:
| colspan="2" | 85.60mm x 53.98mm<ref>[http://www.raspberrypi.org/archives/344 Final PCB artwork]</ref> (3.370 × 2.125 inch)
|}

==Components==
[[File:Raspi-Model-AB-Mono-2-699x1024.png|400px|thumb|right|A diagram denoting the places of the different components on the Rpi, made by Paul
Beech, edited to show 256MB ram for both boards]]
(Provisional - some of the expansion interfaces won't be available on production boards)
(PCB IDs are those of the Model B Beta board)

* SoC: [http://www.broadcom.com/products/BCM2835 Broadcom BCM2835 media processor] ([http://www.raspberrypi.org/wp-content/uploads/2012/02/BCM2835-ARM-Peripherals.pdf datasheet], [[BCM2835 datasheet errata]]) system-on-chip featuring:
** CPU core: [http://infocenter.arm.com/help/topic/com.arm.doc.ddi0301h/DDI0301H_arm1176jzfs_r0p7_trm.pdf ARM1176JZF-S] ARM11 core clocked at 700MHz; ARM VFP. The ARM11 core implements the ARMv6 Architecture. For details on ARM instruction sets and naming conventions, see [http://en.wikipedia.org/wiki/ARM_architecture ARM architecture] and [http://en.wikipedia.org/wiki/List_of_ARM_microprocessor_cores List of ARM microprocessor cores].
** GPU core: a Broadcom [http://en.wikipedia.org/wiki/Videocore VideoCore] IV GPU providing OpenGL ES 1.1, OpenGL ES 2.0, hardware-accelerated OpenVG 1.1, Open EGL, OpenMAX and 1080p30 H.264 high-profile decode. There are 24 GFLOPS of general purpose compute and a bunch of texture filtering and DMA infrastructure. Eben worked on the architecture team for this and the Raspberry Pi team are looking at how they can make some of the proprietary features available to application programmers
** DSP core: There is a DSP, but there isn't currently a public API (Liz thinks the BC team are keen to make one available at some point)
** 256MiB of SDRAM. The RAM is physically stacked on top of the Broadcom media processor (package-on-package technology)
* LAN9512 ([http://www.smsc.com/media/Downloads_Public/Data_Briefs/9512db.pdf Data Brief] | [http://www.smsc.com/media/Downloads_Public/Data_Sheets/9512.pdf Data Sheet])'''(Model B)''' providing:
** 10/100Mb Ethernet (Auto-MDIX)<ref name=autoMDIX>[http://en.wikipedia.org/wiki/Medium_dependent_interface#Auto-MDIX Wikipedia:Auto-MDIX]</ref>
** 2x USB 2.0
* S1: Micro USB power jack (5v - Power Only)
* S2: DSI interface. 15-pin surface mounted flat flex connector.
* S3: HDMI connector providing type A HDMI 1.3a out
* S4: Composite Video connector: RCA
* S5: MIPI CSI-2 interface. 15-pin surface mounted flat flex connector.
* S6: Audio connector: 3.5mm stereo jack (output only)
* S8: SD/MMC/SDIO memory card slot (underside)
* S7: Either 1x USB 2.0 '''(Model A)''' 2x USB 2.0 '''(Model B)'''
* P1: 26-pin 2.54mm header expansion (header not fitted), providing: see [[Rpi_Low-level_peripherals | Low-level peripherals]]
** 8 GPIOs at 3v3
** 2-pin UART serial console, 3v3 TTL (debug); or 2 GPIOs at 3v3
** I2C interface (3v3); or 2 GPIOs at 3v3
** SPI interface (3v3); or 5 GPIOs at 3v3
** 3v3, 5v and GND supply pins
** ARM JTAG (if pins are reconfigured in software)
** Second I2C interface (3v3) (if pins are reconfigured in software)
** I2S interface (if pins are reconfigured in software, hardware hack may be required<ref name="i2s"/>)
** 6 pins reserved for future use
* P2 and P3: 8-pin and 7-pin 2.54mm header expansion (header not fitted), providing:
** 6-pin GPU JTAG (ARM11 pinout)
* P4: 10/100Mb RJ45 Ethernet jack '''(Model B)'''
* 5 Status LEDs<ref name="PCBs">[http://www.raspberrypi.org/archives/402 RPiBlog Post: High-res pics of the PCBs]</ref><ref name="LEDs">[http://twitpic.com/8edlsf TwitPic:Photo of Board Powered]</ref><ref name="LEDsGPIO">[http://www.raspberrypi.org/forum/features-and-requests/what-do-the-status-indicator-leds-indicate-the-status-of Forum:What do the status indicator LEDs indicate the status of?]</ref>:
** D5(Yellow) - OK - SDCard Access (via GPIO16)
** D6(Red) - PWR - 3.3V Power
** D7(Green) - FDX - Full Duplex (LAN) '''(Model B)'''
** D8(Green) - LNK - Link/Activity (LAN) '''(Model B)'''
** D9(Yellow) - 10M - 10/100Mbit (LAN) '''(Model B)'''

* Board size: 85.60mm x 53.98mm. Overall height expected to be less than 25mm. <ref name="artwork">http://www.raspberrypi.org/archives/344</ref>
* Weight: <40g? (Alpha board weighs ~55g <ref>http://www.raspberrypi.org/?page_id=43&mingleforumaction=viewtopic&t=285.0</ref>)
* 6 layer PCB <ref name="artwork" />

==Schematic / Layout==

* [http://www.raspberrypi.org/wp-content/uploads/2011/11/gerbers2.png PCB screenshot]
* [http://lh3.googleusercontent.com/-uO4l8pwSLvU/TsQGbth6x6I/AAAAAAAAAkk/5zQMH3uKPiE/s829/Boardlayout.png PCB screenshot, labelled version]
* [http://www.raspberrypi.org/wp-content/uploads/2011/07/raspberry1.png PCB screenshot, Alpha board]
* [http://www.raspberrypi.org/wp-content/uploads/2011/12/psu.png Preliminary power supply schematic, Beta board]
* [http://dmkenr5gtnd8f.cloudfront.net/wp-content/uploads/2011/12/front1-300x225.jpg Low-resolution PCB front photo, Beta board]
* [http://dmkenr5gtnd8f.cloudfront.net/wp-content/uploads/2011/12/back-300x225.jpg Low-resolution PCB back photo, Beta board]
* [http://dmkenr5gtnd8f.cloudfront.net/wp-content/uploads/2011/12/front1.jpg High-resolution PCB front photo, Beta board]
* [http://dmkenr5gtnd8f.cloudfront.net/wp-content/uploads/2011/12/back.jpg High-resolution PCB back photo, Beta board]
* [http://www.raspberrypi.org/wp-content/uploads/2012/04/Raspberry-Pi-Schematics-R1.0.pdf Official schematics PDF] | [[RPi_schematic_errata|errata]]

==Power==

The board takes fixed 5V input, (with the 1V2 core voltage generated directly from the input using the internal switch-mode supply on the BCM2835 die).
This permits adoption of the micro USB form factor, which, in turn, prevents the user from inadvertently plugging in out-of-range power inputs; that would be dangerous, since the 5V would go straight to HDMI and output USB ports, even though the problem should be mitigated by some protections applied to the input power: The board provides a polarity protection diode, a voltage clamp, and a self-resetting semiconductor fuse.

* Board A: 5V, 500 mA (2.5W) without any devices connected
* Board B: 5V, 700 mA (3.5W) without any devices connected

*As the 5V rail is brought out in the [[Rpi_Low-level_peripherals | GPIO pins]], you can power the Rpi from there too. You should mind however, that those are ''behind'' the power protection circuitry , so you should provide your own.
* It is possible to power the Rpi from a powered USB hub the Rpi controls, but only on 'dumb' devices, that allow the port to supply the full current without waiting for the usb device to ask for it[http://www.raspberrypi.org/forum/general-discussion/power-pi-from-usb-hub-connected-to-pi]. As the power input of the Rpi doesn't have its data leads connected, there is no chance for a communication loop of some sorts.
* POE ([http://nl.wikipedia.org/wiki/Power_over_Ethernet power over ethernet]) is currently not available for the Rpi (but nobody stops you from taking your soldering iron and doing it yourself)

===Power Supply Problems===

There have been a number of problems reported that seem to be caused by inadequate power, this is an attempt to explain what is needed and the consequences of not having enough power.

The power required by the Pi will vary depending on how busy it is and what peripherals are connected.
* Running a GUI will take more power.
* The USB devices and Ethernet connection will take power.
* Running software will take power.

This means that it's difficult to say exactly how much power is needed. People have reported current requirements of between 300mA and 550mA. But it could in reality take more, especially for short periods. A simple multimeter will not show short surges on the power requirement. A surge in the power requirement for a few milliseconds will not be detectable by a meter but will be enough to cause problems.
If the board does not get enough power the voltage will drop. If it drops enough parts of the system will run unreliably because data can get corrupted. The USB IC runs on 5V and handles the USB and Ethernet ports so it's likely that this will be the first thing to fail. Problems seen are unreliable Ethernet connection and unreliable operation of the Keyboard and/or mouse.

There are several reasons why the power to the board may be inadequate:
* The PSU may not deliver enough power. Although the maximum power requirement is said to be 700mA a 1000mA PSU should be the minimum. This allows some leeway in case the power supply cannot deliver it's full power without the voltage dropping.
* The PSU is not regulated.
* The cable connecting the PSU to the Pi may not be good. People have reported cables with 4 ohms resistance on the power connections. At 500mA drain this would reduce a 5V supply to 3V.

====How Can I tell if the power supply is inadequate?====

* Check the power level on the board. TP2 is 0V and TP1 is 5V so a meter across these points should register between 4.75V and 5.25V. If the voltage is less than this OR changes as the activity of the device changes then there may be problems.
* Unreliable Ethernet or keyboard operation, especially if it's OK at first but not when the GUI is started.
* SD card errors at atart up seems to be another symptom of poor power.

====Things that can cause problems====
* A USB connection on a TV or PC. The USB power supply specification is for up to 500mA and if the TV implements this then it can cause problems. The system may work initially but be unreliable because as it becomes more active the power requirement increases.
* A single supply from a powered hub. Most hubs seem to deliver more than the specified current but there's no guarantee. Check the power supply rating, it must be enough to supply everything that's connected to the hub.
* A power supply that is rated for less than 700mA may work some of the time.
* Adding a USB hard disk drive. A HDD will take quite a lot of power as it starts, maybe an amp or more. It the power supply for this also supplies the Pi then this could overload things and cause trouble.
* Some complex keyboards have been reported to take a considerable amount of power, maybe up to 500mA. The Pi cannot deliver this amount of power. Simpler budget keyboards may be better. If the system works with no keyboard attached but not with a keyboard then it's worth trying a different, simpler, keyboard.

====Summary====

* If you are having unreliable operation the first thing to do is check your power supply.
* Start with a good quality regulated power supply that is rated to provide 5V and at least 1A.
* Use a good quality micro USB cable. Cables are notorious for giving trouble so be prepared to swap for another one.
* Not all power supplies will deliver what they claim.

==References==
<references/>

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RPi schematic errata

2012-04-20T07:58:26Z

Md84419: Created page with "Category: RaspberryPi Back to RPi_Hardware#Components = Raspberry Pi schematic errata = The (partial) datasheet was published here: [http://www.raspberrypi.org/wp-con..."

RPi Hub

2012-04-09T14:25:00Z

Md84419: /* About */

{{TOC right}}{{Template:Hub_Flags}} 
{{Clear}}
==Launched==
[[File:RPiLaunch.PNG‎|left|Raspberry Pi Launched]]

See the [[RPi Buying Guide | Buying Guide]] on how to order one, or visit the [http://www.raspberrypi.org Raspberry Pi Foundation Home Page]

==About==
[[File:RpiFront.jpg|300px|thumb|right|The Rpi beta board (model B)]]

'''The Raspberry Pi wiki pages on this site are a community work - the Raspberry Pi Foundation is not responsible for content on these pages.'''

The Raspberry Pi (short: RPi or RasPi) is an ultra-low-cost credit-card sized Linux computer which was conceived with the primary goal of teaching computer programming to children. It was developed by the [http://www.raspberrypi.org Raspberry Pi Foundation], which is a UK registered charity (Registration Number 1129409). The foundation exists to promote the study of computer science and related topics, especially at school level, and to put the fun back into learning computing. We expect this computer to have many other applications both in the developed and the developing world.

* You can get the latest news from the [http://www.raspberrypi.org Foundation Home Page], the [http://twitter.com/intent/user?screen_name=Raspberry_Pi Twitter Feed] or in the [http://www.raspberrypi.org/forum/general-discussion/news-articles-and-blog-posts-about-raspberry-pi forums].
* For Raspberry Pi frequently asked questions see the [[R-Pi FAQ]] or the [http://www.raspberrypi.org/?page_id=8 Raspberry Pi Foundation's FAQ] page.
* Products are RoHS, CE, FCC, CTick and CSA compliant (as of 9th April 2012, the Foundation has to complete some paperwork relating to the last four, and the Distributors need to complete som particulate testing for the first)<ref>http://www.raspberrypi.org/archives/978#comment-19099</ref>. Please contact the distributor from whom you purchased your Raspberry Pi device for details regarding WEEE in your country.
* Expected cost: ~16GBP or 25USD Model A, ~23GBP or 35USD for Model B. For information about availability and shipping see the [[RPi Buying Guide | Buying Guide]].

===History===
* Confused about seeing different versions of the board? Visit the [[Rpi HardwareHistory | History of the Raspberry Pi Hardware]] for information about the past versions.

* RegHardware's very detailed analysis is [http://www.reghardware.com/2011/11/28/raspberry_pi/ well worth a read]. Wikipedia also has [http://en.wikipedia.org/wiki/Raspberry_Pi an entry].

* Russell Davis (aka forum admin [[ukscone]]) has a series of blog articles recording his perspective of the [http://russelldavis.org/2012/01/14/the-raspberry-pi-part-one/ Raspberry Pi story] in several parts from the beginning.

* You will often hear mention of the BBC Micro Computer when people talk about the purpose of the Raspberry Pi Foundation. See this article on the [http://www.reghardware.com/2011/11/30/bbc_micro_model_b_30th_anniversary/ history of the BBC Micro Computer].

==Getting Started==
{| border="1" style="background:transparent;"
| style="width:33%; vertical-align:top; border:1px solid #aaa;" |
===[[Buying RPi |Buying Guide]]===
----
Where can I get one and for how much?
* Raspberry Pi can only be purchased via their official distribution partners - detailed information can be found on the [[Buying RPi | RPi Buying Guide]] page.

* Additional accessories, peripherals and merchandise will also be available through the [http://www.raspberrypi.com/ Raspberry Pi Shop].

| style="width:33%; vertical-align:top; border:1px solid #aaa;" |

===[[RPi Hardware Basic Setup | Basic Setup]]===
----
First little Raspberry Pi Steps...
* Ensure you have all the [[RPi Hardware Basic Setup#Typical_Hardware_You_Will_Need |equipment]] you need to go with your Raspberry Pi.
* Become familiar with the [[RPi Hardware Basic Setup#Connecting_Together | board layout and connect]] it ready for power up.
* Prepare your SD card with the [http://www.raspberrypi.org/archives/805 Pi Fedora Remix Operating System] - more details see [http://zenit.senecac.on.ca/wiki/index.php/Raspberry_Pi_Fedora_Remix Fedora's Raspberry Pi wiki].
| style="width:33%; vertical-align:top; border:1px solid #aaa;" |

===[[RPi Beginners | Beginners Guide]]===
----
You've just got your new Raspberry Pi device - what now?
* [[RPi Beginners | Beginners Guide]]

* Learn about the basics with the [http://h2g2.com/dna/h2g2/A13735596 H2G2 - Introducing the Raspberry Pi] entry.

* Get started with some basic projects and tutorials:
Example projects/tuts which can be linked from here
(or from within a beginners guide page perhaps):
Setup XBMC media centre
Programming tutorials (Liams YouTube etc)
Easy GPIO (when complete or similar thing).
Also links to some basic linux user guides.

* Take a look through the [[R-Pi_Hub#Community|Community]] section, which contains a range of beginner and advanced tutorials and guides, as well as groups to help you find like-minded developers.

|}

==Resources==
{| border="1" style="background:transparent;"

| style="width:33%; vertical-align:top; border:1px solid #aaa; padding-left:5px;" |

===[[RPi Hardware|Hardware]] & [[RPi VerifiedPeripherals|Peripherals]]===
----

*The Model B is more advanced than the Model A - see [[RPi Hardware]].
*The RPi can be plugged into a [[RPi Screens|suitable TV or monitor]].
*The unit will support a range of [[RPi VerifiedPeripherals |USB devices, peripherals and accessories]].
*The [[Rpi Low-level peripherals| Low-level interfaces]] allow the use of optional [[RPi Expansion Boards|Expansion Boards]] in a wide range of projects.
*For more advanced issues including see [[RPi Advanced Setup|Advanced Setup]].

| style="width:33%; vertical-align:top; border:1px solid #aaa; padding-left:5px;" |

===[[Rpi_Software|Software]] & [[RPi_Distributions|OS Distributions]]===
----
The Raspberry Pi will run a range of OS Distributions and run a variety of software.
* See [[RPi Software|Software]] for an overview, and [[RPi Distributions|OS Distributions]] for supported operating system and pre-configured 'images'.
*Main OS distributions include [[RPi Distributions#Debian_ARM | Debian ARM]], [[RPi Distributions#Fedora | Fedora]], [[RPi Distributions#KidsRuby | KidsRuby]] and [http://puppylinux.org/wikka/PARM PARM] from Puppy.
*Advice is also available if you want to [[Rpi_kernel_compilation|compile a kernel]] or [[RPi_Performance|test the Pi's performance]].
*The Raspberry Pi supports a wide range of [[RPi Programming|programming languages]], with many tutorials available.

| style="width:33%; vertical-align:top; border:1px solid #aaa; padding-left:5px;" |
===[[RPi Documentation|Documentation]]===
----
Documentation relating to the Raspberry Pi can be found [[RPi Documentation|here]].

[[RPi DatasheetCategories|Frambozenier.org Documentation Project Datasheets]]

Example documents which can be linked from here (or sub page):
Official Datasheets
White Papers
User Manuals
Recommended books (perhaps)
|}

==Community==
{| border="1" style="background:transparent;"
| style="width:33%; vertical-align:top; border:1px solid #aaa; padding-left:5px;" |

===[[RPi Projects |Projects]], [[RPi Guides |Guides]] & [[RPi Tutorials |Tutorials]]===
----
*An important source of information and guides is the [http://www.raspberrypi.org/forum Official Forum].
*Knowledgeable users may want to review and help out with the [[RPi Tasks |Tasks page]].
*Get started by following some of the many [[RPi Tutorials | Tutorials]].
*Common tasks and useful tip are available through the [[RPi Guides | Guides page]].
*Projects can be found, and added to, on the [[RPi Projects |Projects page]].

| style="width:33%; vertical-align:top; border:1px solid #aaa; padding-left:5px;" |

===[[Rpi Education|Schools, Universities, Clubs & Groups]]===
----
*The Raspberry Pi Foundation's aims include encouraging education. Several groups including [http://www.computingatschool.org.uk/ Computing At School] aim to bring Computing Science back into schools.
*Go to the [[Rpi Education|Education Page]] to add your project and find helpful links.

| style="width:33%; vertical-align:top; border:1px solid #aaa; padding-left:5px;" |
===[[RPi Community |Supporting Communities]]===
----
The [[RPi Community |Raspberry Pi Community]] is steadily growing:
*[http://www.raspberrypi.org/forum The Official Raspberry Pi Forum]

*[http://www.frambozenbier.org/index.php/raspi-forum 'Frambozenbier' (Raspberry Pi Homebrew)]

*[http://www.raspberrymod.com/ Raspberrymod] and [http://www.raspberrypiforums.com/forum RPiforums] Un-Official Raspberry Pi Discussion Boards

*[http://www.raspberrypi-spanish.es Non-official community of Raspberry Pi in spanish language]

*[http://www.worldofpi/com/ World Of Pi] A forum based on all things Raspberry Pi.

*[[RPi Community Magazine]] - User contributed eMagazine, get involved!
|}

==About the RPi Wiki==

'''Do not be afraid to add your bit, content is vital for the wiki to function.'''

[[File:Rasp_turn_around.gif|200px|thumb|right|A 3D rendering of the Raspberry Pi logo by forum user Antario. [http://www.raspberrypi.org/forum/projects-and-collaboration-general/raspberry-pi-3d-logo-animation Source]]]
This wiki is '''open''' for the community. You are encouraged to sign up and add your own projects, guides and correct anything within it. It is important that users like you continue to add to and grow this wiki, that way others will be able to come and do the same making the wiki a valuable resource. See [[Help:Editing | Help Editing The Wiki]] and the [[Special:Upload | Upload File]] link (on the left sidebar) to reference images.

=== Translations ===

The wiki is being translated into several languages, some of which can be seen on the hub banner above. Current languages include:

* English: [[R-Pi Hub]]
* French: [[FR:R-Pi Hub]]
* German: [[DE:R-Pi Hub]]
* Greek: [[EL:R-Pi Hub]]
* Hungarian: [[HU:R-Pi Hub]]
* Japanese: [[JP:R-Pi_Hub]]
* Polish: [[PL:R-Pi_Hub]]
* Portugese: [[pt-BR:Raspberry Pi Board]]
* Romanian: [[RO:R-Pi_Hub]]
* Russian: [[RU:RaspberryPiBoard]]
* Spanish: [[ES:R-Pi Hub]]
* Italiano: [[IT:R-Pi Hub]]
* Chinese:[[CH:R-Pi Hub]]

Any help translating would be greatly appreciated. Thank you to those who have already contributed!

===Admins/Contributors===

Please see the [[Talk:R-Pi_Hub]] page for outstanding issues and discussions regarding the RPi Hub and related pages.
Also , have look at [[RPi Wiki Best Practice]]. Discuss it [[Talk:RPi Wiki Best Practice | here ]]

To share your thoughts, comments, thanks and interesting articles, see our [[RPi Visitor Book |Visitor Book]].

''Big thanks to elinux.org and their groups for the wiki space and content from which these pages have been grown.''

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[[Category:RaspberryPi]]