1. 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)

    • 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.

  2. 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?

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