The robot arm is made out of what is generally called the servo construction kit components. You will note that there are several standard parts used over and over. There is what I call the universal servo bracket, which is the U-shaped bracket with all of the holes. Most of the arm servos will fit into these brackets. There are three C-shaped brackets with rounded corners. We have one right angle bracket, one robot hand (which is pretty obvious), the five remaining servo motors, and a plastic bag with the servo couplers, which are aluminum disks with four holes around the outside and one hole in the middle. We also have three bearings in that same bag.
Our first step in the arm assembly is to take two of the large C brackets ...
