[greg7mdp]

Thanks a lot for the fast answer, much appreciated. I wish I had a picture of our shooting mechanism to post, as I don't know how to explain it well. I'll try to get one tomorrow evening and post it

I understand what you say about vision tracking, but I think we could make it work if we had an accurate way to set the shooting arm vertical angle. I somewhat have it working on my PC, processing images (from a webcam) with OpenCV in one process and sending instructions using network tables to another process running a robot simulation with robotpy. I also run the same OpenCV image processing running on a raspberry pi mounted on the robot. However, without an accurate way to set the shooting arm vertical angle, this will never work.

Why isn't a servo a good solution? I thought it would allow for repeatable settings, but clearly I must be missing a big issue.