Implement a camera in the GUI


In my game I have spaceships. In those ships it’s really hard to look outside and see if there are any other ships. So what I want to do is make some sensors (or camera’s) on my ship so people can look from there HUD if there is an incoming ship. Even better would be if I could implement a camera view on something like a screen in the spaceship.
But does anyone knows how I can do this. I have already looked at the multiple camera’s section, but I couldn’t find anything useful.

You can add some viewports to the guiNode.