I got my GoPro Hero3 for Christmas, it is a fantastic camera. However, the battery life leaves something to be desired. Sure, you can buy a bunch of spare batteries and change them out periodically, but if you are taking a time lapse - you really do not want to move the camera.
Enter: The Frame
This is GoPro's answer to this problem. Now you can shoot while being connected to an external power source. But, wait, $40 for a piece of flimsy plastic (to be fair, TWO pieces of plastic!) with a few holes in the side? No Thanks.
I really wanted this capability, but didn't want to spend a lot of money or sacrifice the poly case by drilling a hole in the side.
Enter: Modify a Mini-B USB Cable to Power an Enclosed GoPro Hero3 (With Skeleton Back Door)
Disclaimer: Perform this at your own risk, I take no responsibility for your actions and assume you have some competency. With that being said, this instructable is merely a cable modification, I do not modify the camera or case.