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Courtesy of Team 971: Spartan Robotics
Team 971 is one of the strong FRC teams that consistently wins regionals in the California region. This is Team 971's take on the 2018 FRC Game, Power Up.
Team 971 chose to use a west coast drivebase as it was the most reliable drivebase at the time.
Team 971 wanted to use a gripper claw in conjunction with a multi-jointed arm to bring Power Cubes high enough so that they could be placed on an elevated Plate of the Scale. A gripper claw of the type they opted to go for is very reliable at grabbing onto the Power Cubes, but only if the Power Cubes are in the correct orientation.
To align the Power Cubes properly in the robot, an overbumper intake was used by Team 971. The overbumper intake is mounted on a pair of pivot arms so that they can start within the legal sizing restrictions and then expand out of the robot's frame perimeter. These pivot arms are also useful in allowing the robot to retract the overbumper intake to prevent the intake from getting damage during collisions with other robots.
To climb, Team 971 seems to use a grappling hook that falls off of the 2nd arm of the multi-jointed arm. The grappling hook is reeled in by a winch. The robot is also able to deploy a pivot arm to allow for a partner robot to drive on top of so that the alliance achieves a double climb.
To see a more novice design for the Power Up game, refer to Ref 27. To see another fully fledged robot design, refer to Ref 28.
* Further explanation of the various mechanisms in FRC Handbook Volume 1.