> "GoPro's Jump-ready 360 camera array uses HERO4 camera modules and allows all 16 cameras to act as one. It makes camera syncing easy, and includes features like shared settings and frame-level synchronization"
No more details than that, but GoPros have an accessory port in the back that makes it possible to control and I'd assume they're using that. You can even supply power through this port so in theory you could add expansion battery packs to this rig and keep the cameras charged.
GoPro's can be controlled by a separate remote control (http://shop.gopro.com/accessories/smart-remote/ARMTE-002.htm...) which can signal up to 50 cameras at the same time. You can also access SD cards via USB without needing to remove them (as well as supply power). So google could do all this with no hardware mods to the cameras. From my test, GoPro's remote typically syncs cameras in under 5ms but sometimes it can be longer. Having a time offset between cameras can be dealt with in software in many cases.
No more details than that, but GoPros have an accessory port in the back that makes it possible to control and I'd assume they're using that. You can even supply power through this port so in theory you could add expansion battery packs to this rig and keep the cameras charged.