NES Controller -> Arduino

So I'm finally done with this semester and having trouble filling the hours. Went for a run, read a book, did some climbing...

... and then found an NES controller buried in a box.

Thanks to pinouts.ru, I rigged up an NES controller adapter using the Arduino. Don't really have anything to use with it, but I suppose it's nice to have around.

The code: NESController.c

The eight leds light up according to the buttons. NES controller plugged in according to this pinout:

      o  4

1  o  o  5

2  o  o  6

3  o  o  7

1. 5V

2. Unknown

3. Unknown

4. GND

5. CLK

6. Latch

7. Data Out