Well, a small PIC requires only 1 passive, so yes, I can.

Bob

The second passive in this case was a current limiting resistor that is not strictly necessary so just the decoupling cap makes one as well.

In any case, that’s an MCU solution so clearly I wasn’t talking about that.

 

I know, my response was meant to be tongue-in-cheek.

Bob

 

I know, my response was meant to be tongue-in-cheek.

Bob

I knew that but I fear that some others might not. Sorry I didn’t acknowledge the joke.

 

OK, now given that this is a model for appearance, not function, the weight of the power source also matters. Unfortunately we have no hint as to how easily the turret moves, or how rapidly it should move. Speed and force both require power, and as we don't know the power source, or any space constraints, there is a lot of the application that we are clueless about. so as a result there are quite a few guesses.

 

I know, my response was meant to be tongue-in-cheek.

Bob

You know, I considered that option, but I said, “No, Bob is a serious kinda guy…”

 

As an experiment, feeding the servo module PWM input from a multiple input "OR" gate fed from some stages of a binary counter clocked at some speed might be a random enough motion, and it could use two ICs and a number of diodes as the "OR" gate. The current draw would be very low and the package would be very small and it would be very cheap.