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FIRST Robotics Competition 2011 - Logo Motion
Buckle Up.
The Game:
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LOGO MOTION is played by two competing alliances on a flat 27’ x 54’ foot field. Each alliance consists of three robots. They compete to hang as many inflated plastic shapes (triangles, circles, and squares) on their grids as they can during a 2 minute and 15 second match. The higher the teams hang their game pieces on their scoring grid, the more points their alliance receives.
The match begins with one 15-second Autonomous Period in which robots operate independently of driver inputs and must hang yellow Ubertubes to score extra points. For the rest of the match, drivers control robots and try to maximize their alliance score by hanging as many logo pieces as possible. Any logo piece hung on the same peg as an Ubertube receives double points. If teams assemble the logo pieces on their scoring grids to form the FIRST® logo (triangle, circle, square, in a horizontal row in that order), the points for the entire row are doubled.
The match ends with robots deploying minibots, small (maximum 12"x12"x12") electro-mechanical assemblies that are independent of the host robot, onto vertical poles. The minibots race to the top of the pole to trigger a sensor and earn additional bonus points.


• Dimensions at start of game 28" x 38" x 60"
• Maximum dimensions during the match, 84" cylinder, unlimited height.
• Weight not to exceed 135 pounds, including the minibot, excluding batteries and bumpers.

Game Play Rules:

• A robot may not pin another robot that is in contact with a field border or tower for more than 5 seconds.
• Robots may only possess or herd one game piece at a time.
• Robots can not enter opponents scoring zones or lanes.

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Game Pieces:
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Our Robot: Eos [Jurassic-bot]

Team 3161, the Tronic Titans 2011 Logo Motion robot, Eos.

-6 wheel drive, 6" AM Wedgetop wheels powered by 4 CIMs into 2 AM SuperShifters. Geared for aprox. 7.5 and 14.5 fps
-Riveted Aluminum tubing and sheet metal
-Low Centre of Gravity
-Two Drive Train encoders used for autonomous

-Polycarbonate grabber with two 4" AM wedge-top wheels controlled independently with a gearing of 1:3 off of window motors

-powered by a Banebots RS-775 motor in a modified AndyMark FP planetary gearbox into an AM ToughBox. It is then run through 2 chain runs each a 3:1 reduction. Overall reduction from motor to arm, 421:1
-motor aided with the use of surgical tubing
-10-turn Potentiometer used for arm positioning and autonomous

-4X 35"^3 tanks. Off board Viair 95c compressor
-Pneumatic cylinder on wrist for starting config and protection when moving cross-course
-also used for shifting, and minibot deployment

-Deployment piston retracts, gravity with surgical tubing assist drops the track into position
-Lexan 'V'' for alignment. Once in position, the launching piston retracts, and the Hoff is propelled towards the pole with the use of surgical tubing. 0.5 s from trigger to minibot on the pole.
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Drive Team:
Driver: Luke Franceschini
Operator: Nathan Woodger
Drive Coach: Paul Fossenier
Human Player: Alexander Ratelle

Our miniBot: The Hoff.

The Hoff, 3161's Logo Motion minibot. Direct drive onto two 0.25" OD aluminum drive shafts, with 0.125” ID x 0.094” thickness Surgical tubing over top for traction. Home depot ON/OFF light switch for turning off once it hits the sensor, and a normally open microswitch for powering on during deployment. Two hard drive magnets get the Hoff on, and keep it on the pole.
Climbs the pole in approximately 1.4 seconds.
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More photos of The Hoff here