Step 17: Test
Now that you're done assembling it, you can test the board to make sure its functioning. Put two good AA batteries into the clips. Whenever the microcontroller gets notice of a 'hard reset' it goes through a little test routine where it lights up all the LEDs in order. If none of the LEDs are lighting up, go back and check to see if you put in any latches, batteries or the microcontroller in backwards. If just a few LEDs arent lighting up, check if they're in backwards.