[Thromgord]

Personally, I would be worried about two things with this design:

1) Having a piston moving up and down on the robot using a chain. Is it possible? Yes. Would it be very difficult to get to work, especially for a relatively new team? Definitely.

2) Using suction cups. The design could work, but the totes would have to be in exactly the right place to be grabbed (not near handles or bends in the plastic), which is not going to happen often in real life.

None of the designs that our team suggested required anything more complicated than a two-motor setup, and yet we found seven different ways to get a four-to-six-tote stack, with three of them able to grab a recycle bin as well. This design would be kind of overly complicated, considering the fact that it could really only grab and carry a single tote at a time.

That being said, this is a clever idea. Best of luck on whatever design you end up choosing.