After assembling the frame, mounting the brushless motors and connecting the ESCs, the Ardupilot 2.5 Mega (APM 2.5 Mega) has to be installed wired properly. Here are some pictures and drawings which show the correct connections (first pics come from DIY Drones, copyright by www.diydrones.com ):
After being interested in FPV and areal video. I wanted to use my GoPro Hero 3 Black Edition as a video camera for FPV. I read about a special cable I had to buy, but on one hand it was pretty expensive and on the other hand it looked very bulky and heavy.
So I found and article of David Windestal, in which he describes how to build your own lightweight video out cable: rcexplorer.se/diy/2012/11/diy-gopro3-video-out-cable/
Thank you very much David!
All you need is a special proprietary 10 pin mini USB connector. Here is the plan how to connect the pins: (At your own risk of course!)