Hi guys, I'm new to the forum. I'm mostly a software guy, but I'm trying some hardware the last few months. Anyway, my newest project is a robot arm that catches a ping pong ball. I have the computer vision done for tracking the ball and I can pass this info to the arduino, but I'm having a bit of trouble deciding how to construct the arm. My idea is an arm, maybe two feet long or so, that rotates 180 degrees from one horizontal direction to the other. On that arm I plan to have a cup to catch the ball that is attached to a belt to move up and down the arm. This would allow the cup to move through the polar coordinates. My question is what motors should I use to rotate the arm and to move the drive the belt?
Any help is appreciated, thanks.