Young humanoid wanted to enter an unofficial challenge hosted by MySnailEatsPizza on NXTLog. The challenge involved the manipulation of cups filled with balls, and climbing over barriers. Young humanoid's entry, 4-Bar, used a 4-bar linkage to keep the cups level when lifting them. The motor used to lift the claw was also connected to the claw actuation itself. Thus, the claw could close upon a cup before lifting it up. This allowed the total number of motors in the robot to stay at three, with the other two operating the skid-steer base.
