prep session #4

Most of the versions of arms that I built this session didn't work because thy weren't stable enough. In this prep session I mostly focused on playing with adjusting the center of gravity. on several different occasions I was able to adjust the center of gravity enough that the arm wouldn't fall over compleatly but it was still too heavy to be picked up by two motors. I found that the part that made most of the difference was the grabber at the end, not because it was particularly heavy but because it stuck out too far. by the end of this class I had a beter adn more compleat Idea of how my arm should work.