Pin-out and schematic can be found on Arduino web page in section Products. I would like to have simplified table here, because I think it is more self explaining.
Arduino UNO Rev3
| v3
|
Digital H |
|
Digital L
|
| SCL |
SDA |
AREF |
GND |
13 |
12 |
11 |
10 |
9 |
8 |
|
7 |
6 |
5 |
4 |
3 |
2 |
1 |
0
|
