Hello: As I was trying out my new Arduino Uno R3 board, I found 3 pins that didn't have any white words beside it. Those 3 pins are located on the right of the reset button, on the left of the GND pin, and AREF is right beside it. Can anyone tell me what those 3 pins are? Thanks a lot.

GND on Arduino Uno R3

retrolefty December 15, 2012, 4:12pm 6

This picture from the product page shows the reset switch location on the original Uno, Uno SMD, rev2, and current rev3.

Lefty

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