4x4x4 LED cube

Step 5 Connections to the arduino

positive leads from columns go to arduino pins 0-15 in order of LED columns
negatige leads from layers go to arduino pins 16-19

the Arduino only has14 I/O pins but the 6 analog pins can also be used as pins 15,16,17,18,19, and 20. Good tip to remember when wiring it all up. So if you use all of the ins there will be 20 which is what we need.