Robot Quick Facts
  • Name: Sir Percival

  • Year: 2015

  • Weight: 120 lbs

  • Programming Language: Labview

  • Status: Decommissioned

  • Game: Recycle Rush

  • Initial Size: 26.75″ x 36.75″ x 60″

  • Extended Size: 37″ x 26″ x 12′

  • Competition History

    • Wisconsin Regional Engineering Inspiration
    • Northern Lights Regional Industrial Design Award
  • Robot Features

    • Drive Train
      • Tank Drive
      • Two Three CIM West Coast Products DS Gearbox using One CIM each
      • High Gear: 14ft/s
      • Low Gear: 7ft/s/li>
      • Front Wheels: 6″ Plaction Wedgetop
      • Middle Wheels: 4″ VexPRO Omni
      • Rear Wheels: 6″ Andymark Omni
    • Lift
      • Powered by 2 CIM Motors through VEXPro Single Speed Double Reduction Gearbox
      • Actuated backwards on two large pistons for better center of gravity
      • Carriage fastened on a #35 loop
      • Carriage has 2 pistons for releasing totes
    • Can Burglars
      • Powered by large pneumatic cylinders
      • Polycarb shields to prevent other teams from snatchin’ our cans
    • Intakes
      • Two intakes powered by 2 Bag motors
      • Geared down through 2 AndyMark LJ Bevel Boxes
      • Custom roller wheels made of poly-carbonate and polyurethane fastened together using epoxy


Competition Rankings
of 60
Wisconsin Regional
Season Challenges
  • When you have a gigantic arm it’s hard to figure out what motors to use. Understanding what motors to use for the “elbow” and “wrist” took a lot of trial and error. Additionally since it was such a tippy robot, we had to put the battery up front and controlling the claw was a bit of a struggle at competition since we only had two joysticks that were directly controlling the elbow and wrist. Making it smooth and communicating with the driver was difficult. The programming department also had some struggle working with the drive team to get the robot performing correctly in a way that was easy to control. First year of us doing any sort of articulation.
  • Since the claw was so large, it got in the way easily and spinning around often hit the side-wall of the field which would bend the claw and make it useless. Controlling the arm to put the trackball over the overpass was an exercise in focus and communication with the drive team and was never as confident as we hoped. During the championship match, the robot hit a sidewall during autonomous and the power cable came out, instantly killing the robot. We were the highest scoring robot on the field and we were literally powerless.