The initial arm only changed slightly through development. Almost the entire arm was designed to be 3D printed to save on time and money. Additionally, the arm features three degrees of rotation in the shoulder, the elbow, and the wrist.
The initial design for a hand was a robot claw design that was relatively simple and easy to construct.
This was a nearly finalized version of the arm with a refined shoulder and gear system to achieve the necessary torque for motion.
To the left is a demonstration of motion by the arm prototype.