I am having an application that needs to trigger the image shot externally on the Phantom 3 Pro. I know that you can shot the image by tapping on the GO App or set an interval to take images automatically. But I need to synchronize the image shot (the precise timestamp when the image takes) with an external device, such as a DGPS, so that I can have a geotagged image with better accuracy. Is there a way to explicitly control the image taking by sending an electrical signal via a certain wire to the camera? or through the CAN BUS by a certain message? Any response or suggestion will be highly appreciated.