Mysterious Gear Sorter

Pick and place robot arm that sorts gears in a mysterious way

A baffling pick and place robot arm

You might have seen many LEGO robots that can sort parts by color, but few robots can sort LEGO parts by size. This pick and place robot arm can measure the number of teeth of the gears in a unique and baffling way, that's why  I named it the Mysterious Gear Sorter. Can you guess how does it work? Are you curious to discover the trick? Click on  the button below, and build this pick and place robot arm with a single LEGO MINDSTORMS Education EV3 set 45544.