foxonix created the topic: Arduino Shield Rev. A Silkscreen Error
We'd like to point out that there is a silkscreen error on the Rev. A Arduino Shield. The labels denoting the digital pins on the Arduino should be numbered from 0 to 13. Number 13 is missing, and as a result the following two labels after that, GND and AREF, are in the wrong location.
The wiring of the PCB is correct, though. So the pin following digital pin 12 is correctly wired to digital pin 13, the pin following that is wired to GND, and the pin following that is wired to AREF.