Friday, November 22, 2019


WHMS WreckingBots 2.0 Considerations and Build

WreckingBots 2.0
WreckingBots is a game where robots wreck the tower of cubes, drop the opponent's cubes into the corner bin and push the opponent's' base switch to decrease the opponent's' life {by point system). Robots should be built in a way that it survives the 5-minute game of physical contact with other robots.



Playing Field
1.    The playing field is 16' x 16' in size.
2.    Each base has an area of 3 feet square.
3.    The ball switch has about 1' clearance from the ground.
4.    The ramp incline is about 26 degrees.
5.    There are 20 blocks in total (10 blocks for each team)

Robot Specifications
1.    The maximum size of the robot is 3' x 3' (length and width) and must fit in the base.
2.    Weight and height are unlimited.

Not Allowed
1.    Chemical or liquid
2.    Fire or flammable materials
3.    Rope, strings, or similar materials to damage robot operations
4.    EMP generators
5.    Signal jammers
6.    Blades
7.    Projectiles
8.    Explosives
9.    Guns
10.  Sticky materials

General Rules

1.    Robots may be autonomous or remotely controlled.
2.    Failure to show at the playing area 2 minutes after the scheduled time will cause the team to forfeit the game.
3.    Judges decision is final.
4.    The referee may recall teams for a tiebreaker round if needed.

Rules

1.    All robots will have 100 life points at the beginning of the game with a designated color of block and base.
2.    Robot's life diminishes depending on the color of the block dropped completely into any of the crates by any robot. Each block dropped is equivalent to –5 life points.
3.    If the switch of a base is tripped once (indicated by a solid light), the robot of that base may Jose 20 life points. It can be switched back to regain life points.
4.    If the switch of a base is tripped again (indicated by blinking light), the robot of that base may lose 30 life points. It can be switched back to regain life points.
5.    There will be at least a 15-minute break between elimination and final rounds to enable winners to fix their robots and have it inspected again.
6.    The robot that has the most life points at the end of a 5-minute elimination match wins the game and advances to the final match.
7.    Scores will reset in the final round.
8.    Once a robot is immobile, damaged beyond repair, or thrown out of the playing field, it will be considered a "knockout" and the other robot wins regardless of points.

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These are the published rules for the competition build.  In order to determine the best build, we have to break the competition into tasks.

1.       No larger than 3x3 ft and fit in the Base.
2.      Be able to pick up blocks and transport them up the ramp and into the basket.
3.      Move the ball switch back and forward.
4.      Be able to drive up a 26-degree slope.
5.      Be tall enough to not get stuck on blocks (2").
6.      Be robust enough to not be wrecked by the opponent’s bot.

Now let’s talk about build considerations:

1.       If gearing is an option, consider it.
2.       Have an articulated arm and be able to move it vertically, and horizontally in 3D.
3.      Last year there were several bots that high centered on blocks, effectively immobilizing them for the entire match.  Make the suspension high enough to drive over blocks and up the ramp.
4.      If the frame is higher, it needs to be wider to prevent being pushed or tipped over because the articulated arm must operate at an average height of 1 ft off the ground.
5.       Articulated arm can be dual purpose…tripping the ball switch and picking up blocks. 
6.       Last year, the WHMS WreckingBot fell apart on the field.  Consider using nuts with nylon inserts to prevent them from falling apart under duress.
7.       Several bots last year lost their sync with the controller.  Harden the connections and controllers to ensure it maintains sync.  You can’t touch it after it starts. 


I will add more as time permits, including photos.



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