His latest, an RC paintball gun turret, is our favorite though. He actually rates this as one of the easier projects he’s published; it just took a while to assemble. Several design decisions ...

[Aaron] and [Davis] built a motion-tracking turret that uses openCV to detect ... Pi controlling two NEMA steppers that aim the gun. The design is simple but elegant, with a rotating base ...

and one or more revolving gun turrets, similar to the pioneering design of the USS Monitor. They were primarily designed for operations near the shore. Their shallow draft allowed them to navigate ...