Rebound Rumble is the 2012 FIRST Robotics Competition and is styled similarly to basketball. The game is played on a carpeted field that is 27 feet by 54 feet. The field is designed to mimic a basketball court and contains a halfcourt line, a key, and an array of basketball hoops. There is one top hoop, two middle hoops, and one lower hoop. In the middle of the field their is a 4 inch high wall with three tilting bridges placed along it at the height of 12 inches.

During the match teams can earn points by scoring basketballs in hoops. Points differ based on which hoop the basketball has been scored in and when during the match the points are scored.

Points scored, based on number of robots and type of match.

At the end of the match teams can earn points by balancing their robot on the tilting bridges located in the middle of the playing field

Also, if robots from each team balance their robots on the coopertition bridge, located at the direct center of the field and belonging to neither red nor blue alliance, each team earns points, one point for attempted balancing, and 2 points if the bridge is successfully balanced. Coopertition points are earned from doing this, which helps to place teams if ties take place with regular points.

Our Robot: Vlad

Planning for the robot design began with analyzing this year’s challenge, Rebound Rumble. It was determined that the robot should include some sort of shooter (rather than a dumping system), a means to gather game pieces from the ground, and a system to transport the collected game pieces to the shooter.

The decision to make a shooter rather than a ‘dumper’ was made before we began brainstorming shooter ideas. The team determined that with the opportunities for extensive defensive strategy in this game, it was better to build a robot capable of distance shooting. Much of the design discussion and testing was in regard to the shooter and ideas included: a pneumatic cannon, an air cannon, a rotating conveyor, a catapult, and several types of wheel shooters designs for which included one, two, three, and four wheels arrangements both vertically and horizontally. After a lot of testing and consideration, we came to the conclusion that a vertical, two or three wheel shooter would be the best design. It would allow for greater aiming ability, less moving parts, and a more reliable shooter in general.

The mechanism for collecting balls was designed as a series of rollers and conveyors leading the ball from the ground to the shooter. This structure, consisting of four rollers and polycord tubing, would be able to transport balls to the shooter using as few moving parts as possible. It could also accommodate a shooter with pitch and YAW mobility, allowing us to further explore the idea of vision assisted aim. To help guide the ball into this system, two designs were tested: the “funoodle”; a long rod with surgical tubing flails, and a spinning brush. After considerable prototyping, the brush was chosen because it had better grab and was a more efficient use of power.

Final Measurements: Weight: 127.3 lbs Length: 27 in Width: 37 in Height: 3.5 ft