How it works:
First, the arm moves over the pieces it needs, and grabbes the first one. Then, it moves over to the building part of the robot, lowers, and drops it. I had some trouble with this piece tilting forward once it was dropped, so when the arm came over to drop the second piece, the first one got in the way. So I taped a little piece of paper onto the front of the part that pushes all the blocks together so if the piece leans forward, the robot pushes it up flat against the back wall.
Then the arm goes back over and gets the second piece, and drops it in front of the first one. The pushing part then pushes these two together.
Finally the arm goes back over and gets the third piece and puts it down, and all three pieces are pushed together.
I had a lot of trouble with getting the middle square piece to drop in the perfect place so all the blocks could fit together. So, after a long time of fiddling around, I finally got it to work. (most of the time)
Eventually, I ran out of time (and patience), so I have to manually pump the pneumatics, and place the pieces in the little slot for the arm to pick up. After I was finished, I put some fiber optics on it just to make it look special :)
