GoPro Resources
Never satisfied I'm working on another rig. The GoPro Omni has been great, very reliable in the field, and the Kolor workflow has been very good. However, I really want stereo. My mind is not fooled by monoscopic 360 images, they don't look real to me. I'm so invested in GoPro cameras that I'll probably continue to use them for this build, but I need more info on GoPro. I sure wish GoPro was more open about their cameras. They are really missing an opportunity for the DIY community. I just bought another 6 Hero's because this price at BH Photo is really too low to pass up.
Here are the links to useful resources as I work on this project:
GoPro Expansion Connector
Source for GoPro expansion connector
GoPro Pinout
Pinouts for GoPro (there's some confusion on correct orientation)
DIY Sync Solution
MewPro2 (I think Orangkucing has a solution, just can't tell)