Hektor

Of course we did not call it Hektor from the beginning, it did not even have a shape, it was just an idea. There were dozens of decisions to take and problems to solve, but the basic idea was clear: Four step motors, mounted onto the wall in the four edges of a rectangle would move the can, which would be connected to the motors by something like robes, the motors functioning like winches. The can in the middle and the four robes connected to the motors would form an X, and when the can is moved by pulling or releasing each of the winches, this X is distorted.

  thanks to Riley Dog