Cheap Power Supply From Available Components

Step 1 Step 1

Slip off the tip of the AD-DC converter, and leave yourself plenty of room still attached to the brick. You can throw the tip away if you like, we won't need it. Then strip and twist the wires.

I tested mine to see if it would work, and which wires were which. I also felt the wires and brick to make sure that they weren't heating up at an abnormal rate, indicating a short. I'm a little paranoid about shorts, it's one of my things.