[Eric24]

We basically did the same exact thing for our 2007 robot. It was a scale arm built out of polycarbonate with potentiometers at the 3 joints for manual control. This is probably the most intuitive way to control a multi-jointed arm, but we have decided to never make an arm like that again. The arm itself performed great, but it was way too complex for the drivers to control during the heat of the moment. If you have decided to go with a multi-joint arm, I wish you the best of luck, but you might want to evaluate its practicality.