RPi HardwareHistory

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Hardware & Peripherals:

Hardware - detailed information about the Raspberry Pi boards.

Hardware History - guide to the Raspberry Pi models.

Low-level Peripherals - using the GPIO and other connectors.

Expansion Boards - GPIO plug-in boards providing additional functionality.

Screens - attaching a screen to the Raspberry Pi.

Cases - lots of nice cases to protect the Raspberry Pi.

Other Peripherals - all sorts of peripherals used with the Raspberry Pi.

Which Pi have I got?

You can try to check which Pi you have by looking at the board layout and the components used, but this might not be very easy or reliable. Since the range of Pi models gives a significant difference in performance, this can be quite important, especially if not buying through the approved channels.

Board Revision History

The reliable way to find out your board revision is to use the following command:

cat /proc/cpuinfo

You will see your device data including:

 Hardware	: BCM2708
 Revision	: 0003

If you see a "1000" at the front of the Revision, e.g. 10000002 then it indicates[1] that your Raspberry Pi has been over-volted, and your board revision is simply the last 4 digits (i.e. 0002 in this example).

Revision Release Date Model PCB Revision Memory Notes
Beta Q1 2012 B (Beta) ? 256 MB Beta Board
0002 Q1 2012 B 1.0 256 MB
0003 Q3 2012 B (ECN0001) 1.0 256 MB Fuses mod and D14 removed
0004 Q3 2012 B 2.0 256 MB (Mfg by Sony)
0005 Q4 2012 B 2.0 256 MB (Mfg by Qisda)
0006 Q4 2012 B 2.0 256 MB (Mfg by Egoman)
0007 Q1 2013 A 2.0 256 MB (Mfg by Egoman)
0008 Q1 2013 A 2.0 256 MB (Mfg by Sony)
0009 Q1 2013 A 2.0 256 MB (Mfg by Qisda)
000d Q4 2012 B 2.0 512 MB (Mfg by Egoman)
000e Q4 2012 B 2.0 512 MB (Mfg by Sony)
000f Q4 2012 B 2.0 512 MB (Mfg by Qisda)
0010 Q3 2014 B+ 1.0 512 MB (Mfg by Sony)
0011 Q2 2014 Compute Module 1.0 512 MB (Mfg by Sony)
0012 Q4 2014 A+ 1.0 256 MB (Mfg by Sony)
0013 Q1 2015 B+ 1.2 512 MB ?
a01041 Q1 2015 2 Model B 1.1 1 GB (Mfg by Sony)
a21041 Q1 2015 2 Model B 1.1 1 GB (Mfg by Embest, China)

Significant design changes

The following changes were made in the early models.


ECN0001 is the request to not fit D14 and to replace poly-fuses F1 and F2 with 0 ohm.

D14 Removal

D14 can interfere with some CEC devices if the Pi is left plugged in and unpowered. The benefits of having it are minimal so it was removed.[2]

F1 & F2 Replacement/Removal

F1 & F2 can cause problems with some USB devices which draw high current. In particular due to the recovery characteristics of the poly-fuses, it can take a while to recover their low resistance state afterwards, adding additional problems for other devices (lower voltage on the USB bus).

Model B Revision 2.0

This model is based on a new PCB layout that includes previous build fixes from ECN0001 such us removal of the poly-fuses in series with the +5V power for USB devices, and other fixes reported by the community such as the erroneous connection of the LAN9512 VDD18CORE pins to the +1V8 power plane, addition of the 8-pin P5 header (non-populated) for extra GPIO pins, addition to the 2-pin P6 header (non-populated) for a RESET button, and other changes and improvements reported in more detail [3].

Colour Variations

A Chinese (Non-FCC) RPi variant full production board (Model B Rev 2.0)

The vast majority of the Raspberry Pis produced have a Green PCB, but Pis produced by Egoman_Technology_Corp (only available in the Far East) have a Red[4] PCB, and RS Components produced a limited edition of anniversary Pis in Blue[5].

Current models

The following models can be considered current due to the large numbers that were shipped. They may be available from commercial suppliers or as pre-owned models.

Raspberry Pi 2 Model B

Announced on 2nd Feb 2015 (full announcement from the Raspberry Pi Foundation). The Raspberry Pi 2 retains the same US$35 price point of the model B+.

Raspberry Pi 2 Model B

The Raspberry Pi 2 features:

  • Broadcom BCM2836 SoC, with quad-core ARM Cortex-A7 900 MHz processor
  • VideoCore IV dual-core 250 MHz GPU
  • 1 GB SDRAM - shared by the GPU and CPU
  • MicroSD card slot for boot and storage
  • 4 x USB 2.0 ports (via on-board 5 port hub)
  • RJ45 10/100 MBit/s Ethernet port
  • HDMI and Composite video, audio through TRRS jack
  • 40 pin GPIO Interface connector
  • CSI (camera) and DSI (display) connectors
  • 4 squarely positioned mounting holes

Raspberry Pi Model B+ Full Production Board

The RPi full production board (Model B+)

Announced on 14th July 2014 Full announcement from the Raspberry Pi Foundation.

Raspberry Pi Compute Module

The RPi compute module

Announced on 7th Apr 2014 Full announcement from the Raspberry Pi Foundation.

The compute module contains the guts of a Raspberry Pi (the BCM2835 processor and 512 MB of RAM) as well as a 4 GB eMMC Flash device.

This is integrated on to a small 67.6x30mm board which fits into a standard DDR2 SODIMM connector.

Raspberry Pi Model A Full Production Board

  • As of Feb 2013, available from distributors in Europe but not North America
  • Board has 256 MB of RAM rather than the originally planned 128 MB[6]
  • The Foundation produced a small Beta batch before handing manufacturing over to RS and Farnell
  • The Model A boards actually use the identical Revision2.0 PCB as Model B boards, just with a different selection of components fitted (full details available from the schematics). AFAIK no Model A boards using the Revision1.0 PCBs were ever publicly available (or indeed ever made?).

Raspberry Pi Model B Full Production Board

The RPi full production board (Model B Rev 2.0)

Historical and Development models

These are unlikely to be readily available, and would then be in demand by collectors.

Raspberry Pi 1st Production Board

  • Announced: 29th Feb 2012 - Start of Sale Only[6]
  • Credit-card Format
  • Initial 10k Batch (All Model B's) Manufactured in China (Jan/Feb 2012)[7]
  • Should look identical to the Raspberry Pi Beta Board below (except different SDCard holder).
  • The board has a yellow RCA connector, rather than the black one used in the Beta's.
  • Nokia/Qt Development group has donated vouchers for 400 RPi units for developers[8]
  • The batch was delayed several weeks due to the RJ45 network connector being substituted for the wrong part[9] and also so the board could undergo compliance testing[10]

Raspberry Pi Beta Production Board

  • Announced: December 2011[11]
  • Credit-Card Format
  • Manufactured in UK
  • Produced 100[12] PCBs
  • Characteristic feature of hand-modded correction to PCB [13]
  • See the blog post which includes a video explaining how the production units will differ from the beta boards.

eBay Auction

10 of the completed Model B boards were auctioned on eBay (Started on 1st Jan 2012) [14])

SerialNo: #1 #2 #3 #4 #5 #6 #7[15] #8[16] #9 #10
Date: 11-Jan-2012 11-Jan-2012 10-Jan-2012 10-Jan-2012 09-Jan-2012 09-Jan-2012 08-Jan-2012 08-Jan-2012 07-Jan-2012 07-Jan-2012
Sold For: £3,500 £2,150 £2,257 £1,550 £1,040 £1,000 £989 £1,020 £930 £1,900

Board #7 was anonymously (and generously) donated to Centre for Computing History[15] (also spotted here..)!

Board #8 Owned by Tech Blogger, Paul Maunders, see his blog for details[16]

Raspberry Pi Alpha Board

RPi Alpha Board
  • Announced: August 2011[17]
  • Large Format for debugging (Model B)
  • Populated with headers for GPIO, JTAG, DSI, CSI, as well as switches and LEDs for I/O testing.

Raspberry Pi USB Prototype Board

RPi USB Prototype Board
  • Announced: May 2011
  • The "Computer On A USB Stick" Format
  • Included built-in camera
  • HDMI one end and single USB the other
  • Introduced the RPi Foundation to the world (any earlier links appreciated), featured by BBC Online Video.
  • Known internally at Broadcom as the MicroDB [18] [19]

Raspberry Pi Concept 2006 edition

Raspberry Pi Concept 2006 edition
  • Vero-board Prototype & PCB Version
  • Atmel ATmega644 microcontroller clocked at 22.1 MHz[20]

See Also