We got our turret made tonight, although the robot to put it on, and the shooter to put on it, are not really even started. We are looking for about 45 degrees maximum travel, but that can be changed pretty easily, it's capable of close to 180, I think. We want to just have enough travel in the turret to do what's needed, which is to get the shooter aimed at the basket when we park on the key.
The complexity of our turret is not very high, but then we don't have it working yet, so we are not sure if it has sufficient complexity
The turret we made in 2009 worked well and was also relatively simple.