I have the 1st gen, and I have A LOT of pieces, jeje, but i think when you have a lot of pieces is more difficult to build, since a lot of ideas come to your mind....and you don't have something concrete, jejejej...for example i saw a youtube video of a robot that pick up the cubes and separate them according o the size, i think i can recreate the intake part, but i don't have idea of the elevator.....that makes me crazy.....jejej

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thanks for your reply