Datasheet

You can connect the inputs of the level shifter to any

pins you want but in this case we connected digital

I/O 13 to pin 3 of the level shifter, 12 to pin 5, 11 to pin

9, 10 to pin 11 and 9 to pin 14. This matches the example

code we have written. Once you get this working, you

can try another set of pins.