It's actually quite simple to make 360 deg panos using photos. Not videos. Using the DJI Go4 app go to the camera settings and select photo (not video), then select panorama, then on the bottom of your screen you will see options for different kinds of panos. Pick the one on the left (it looks like a globe). Then close out of the menu and go fly. When your drone is where you want it to be, press the shutter button on the app. It will take a minute or two to take 26 shots and then it will AUTOMATICALLY do it's magic right there while the drone is still flying. It will tell you on your display when the pano is complete . When you get home take out the memory card and put it in your computer. You will then see the finished pano. It will be the photo that does not look geometrically right (it's a flat view at this point) but it actually is. Upload it to FB or Kuula or on your pc view it using a 360 viewing app. I like the one called LizardQ viewer.
