Automated K'nex Ball Lift

I've been trying to come up with a new design for a k'nex ball lift that HASN'T been done by shadowman already.... so here it is. By combining lego and k'nex pieces I have constructed a fully automated robotic ball lift. The machine uses the ultrasonic sensor to wait for a ball to reach the bottom, where it is then picked up by the robotic claw and brought up a ramp to the top. This is just a prototype of the machine now. I am expecting the final to have a 5-6 foot long lift hill, and I have no plans to integrate this into my current work in progress ball machine.