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6 Responses to Raspberry-Pi-GPIO-Layout-Revision-2

  1. Robin B. says:

    And just to make the picture complete with the I2C bus:
    – pin 3: SDA1
    -pin 5: SCL1
    (pull up resistors 1K8 are foreseen on the RPi pcb)

  2. Dave says:

    4, 9, 14, 17, 20 and 25 used to be “do not connect”. Is it now safe to use them?

    • Matt says:

      A number of Raspberry Pi Foundation people have said they are now fixed so are safe to assume their final function. A few of the pin assignments changed between Rev 1 and Rev 2 designs but I doubt anything else will change. They have stated that their focus is improving software support not additional hardware changes.

  3. Bonzadog says:

    Nice Pin Plan.
    I orderd my Raspberry Pi very early so have revision 1 — can someone point out to me
    1) what the pin are for R1 and
    2) what are the differences between R1 and R2?

  4. Chizz says:

    and remember kids…
    Rev 1 boards use I2C bus 0 ,
    Rev 2 boards use I2C bus 1

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