This turret can automatically aim/shot targets using guns/cannons attached to it

Video:

https://www.youtube.com/watch?v=eEnFzA9IfNk

Connection

Press Alpha9 or Alpha0 to switch between targets,

Press O to create a test target cube beside your plane, click RMB to let the cube move towards the mouse cursor and see how the turret track the cube

Note that "Auto Fire" is Off by default, you need to turn it in settings panel if you want to

A pre-alpha version is available on Github:
https://github.com/CarnationRED/ActiveDefence/releases