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2.007 Strategies
Adam Paxson
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Strategy 1: Rotating Arm
• 2WD robot will drive to one of the ‘2’ or ‘7’ compartments to deposit the balls in the ‘0’ bins
• Balls will be picked up and moved by a rotating arm
• One motor can be utilized for actuating exponent arrows
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Strategy 1: Rotating Arm
5 seconds: move in front of bin
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Strategy 1: Rotating Arm
5 seconds: open compartment
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Strategy 1: Rotating Arm
30 seconds: move and deposit balls
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Strategy 1: Rotating Arm
5 seconds: move exponent arrow
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Strategy 1: Rotating Arm
• Scoring:– Specific and pre-defined movements– Small allowance for error
• Defense:– No dependence on roaming– Not enough time for other robot to block
• Offense:– No offensive aspects; inadequate propulsion
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Strategy 1: Rotating Arm
• Predicted score range:– No balls from the bin, only held balls are deposited,
arrow is not moved:• (0balls+0kpucks+1)bottom bin(5balls+0Npucks+1)0 bins20 = 6
– No balls from the bin, only held balls are deposited, arrow is moved:
• (0balls+0kpucks+1)bottom bin(5balls+0Npucks+1)0 bins24 = 96
– All the balls from the bin and held balls are deposited, arrow is moved:
• (0balls+0kpucks+1)bottom bin(20balls+0Npucks+1)0 bins24 = 336
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Strategy 1: Rotating Arm
• Risks:– Balls roll too far out of bins, not able to pick up– Opponent prevents arm from rotating– Opponent moves exponent arrow
• Countermeasures:– Attach a fence to prevent rolling– Attach a guard to protect rotation– Make arrow mechanism “clamp”
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Strategy 2: Puck Lifter
• 2WD robot has an arm that lifts and drop pucks
• Pucks are put in both scoring areas to take advantage of multiplier
• Puck arm can also move the exponent arrows
• Robot also scores 5 held balls
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Strategy 2: Puck Lifter
5 seconds: collect 3 pucks
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Strategy 2: Puck Lifter
5 seconds: deposit pucks and balls
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Strategy 2: Puck Lifter
5 seconds: gather remaining pucks
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Strategy 2: Puck Lifter
15 seconds: deposit pucks into ‘0’ bin
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Strategy 2: Puck Lifter
10 seconds: move exponent arrow
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Strategy 2: Puck Lifter
• Scoring: – Utilizes bottom bin; reduced risk– Arm could possibly lift balls
• Defense:– Scores quickly; little chance of early disruption– Lifting arm can tip aggressors
• Offense:– No tactics; inadequate propulsion
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Strategy 2: Puck Lifter
• Predicted score range:– Pucks and balls are scored in bottom bin only, arrow
is not moved:• (5balls+3*3pucks+1)bottom bin(0balls+0Npucks+1)0 bins20 = 15
– Carried balls and all pucks are scored, arrow is not moved:
• (5balls+3*3pucks+1)bottom bin(0balls+3*3pucks+1)0 bins20 = 150
– Carried balls and all pucks are scored, arrow is moved:
• (5balls+3*3pucks+1)bottom bin(0balls+3*3pucks+1)0 bins24 = 2400
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Strategy 2: Puck Lifter
• Risks:– Robot falls into scoring bin– Arm misses ‘0’ holes– Opponent disrupts arrow movement
• Countermeasures– Rails on bottom of robot to back up over corners– Bump into bins for alignment– Make arrow mover extendable to reach over
opponent
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Strategy 3: Bulldozer with Minibot
• 4WD tracked vehicle with massive driving power
• Minibot with stored energy to clamp to bins and move exponent arrow
• Special plow to scoop balls from middle
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Strategy 3: Bulldozer with Minibot
10 seconds: move up to bin, scooping out balls from the center
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Strategy 3: Bulldozer with Minibot
20 seconds: deploy minibot on bins, return while pushing balls and pucks into bin
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Strategy 3: Bulldozer with Minibot
15 seconds: disrupt opponent
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Strategy 3: Bulldozer with Minibot
• Scoring:– If robot achieves proposed strength and
maneuverability, scoring will be highly probable– Bottom bin is very easy to score in
• Defense:– Robot will be able to push opponents – Most middle balls will be on Bulldozer’s side
• Offense: – Tracks will expedite crossing of middle– Minibot can have mechanism to pin opponent’s arrow
at ‘0’
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Strategy 3: Bulldozer with Minibot
• Predicted score range:– Carried balls and pucks are scored, arrow is not
moved:• (5balls+3*6pucks+1)bottom bin(0balls+0Npucks+1)0 bins20 = 24
– Carried balls, pucks, and middle balls are scored, arrow is not moved:
• (35balls+3*6pucks+1)bottom bin(0balls+0Npucks+1)0 bins20 = 54
– All the balls from the bin and held balls are deposited, arrow is moved:
• (35balls+3*6pucks+1)bottom bin(0balls+0Npucks+1)0 bins24 = 864
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Strategy 3: Bulldozer with Minibot
• Risks:– Minibot is hindered by opponent– Opponent scores before bulldozer is able to
cross the centerline
• Countermeasures:– Attach minibot quickly to be able to defend– Score pucks and balls quickly; prevent
opponent from reaching exponent arrow
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Best Strategy: Puck Lifter
• Extremely high scores are possible
• Driver can always rely on scoring in the bottom bin
• Dexterous arm provides best opportunity to move exponent arrow