As an Inventor, robotics Competitor and Student at the California Academy of Math and Sciences I have participated on several projects including:
Lemelson MIT InvenTeam
First Robotics Competition
Vex Robotics Competition
Much of my work can be summarized in this video:
Starting in middle school i have been a participant and leader on VEX Robotics teams at Rolling Robots.
Here is one of the more interesting robots. It is a double catapult design that is real rapid fire. Watch the video through to see its full effectiveness.