The Arduino AA Undershield

Step 5 Mount all the spacers and your Arduino board

It's time to mount all the spacers to the shield and mount the shield and the Arduino. Start mounting the spacers that is placed between the shield and the surface, you're placing it on. You should also solder two wires from the output of the shield (I recommend, that you use a red and a black wire to avoid confusion). When you've soldered the wires in the right places, use a voltmeter again to check the voltage.

Then mount the two spacers for the Arduino board.

After you've done that, it's time for mounting the Arduino board on top of the shield using two screws.

Then insert the positive wire (in my case the red one) into the place in the power header that is marked "5V". Insert the negative wire (in my case the black one) into the place in the power header that is marked "Gnd".