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Lego Mindstorms Group #3

Lego Mindstorms Group #3. Weston John Hampton Kyle. Outline. Introduction Robot Construction & Programming Logic Performance Results and Discussion Conclusion. Introduction. Use of robotics throughout the ages: from Mars rovers to children’s toys.

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Lego Mindstorms Group #3

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  1. Lego MindstormsGroup #3 Weston John Hampton Kyle

  2. Outline • Introduction • Robot Construction & Programming Logic • Performance Results and Discussion • Conclusion

  3. Introduction • Use of robotics throughout the ages: from Mars rovers to children’s toys. • Robotics role in aiding the immobilized. • If properly designed, robots are capable of navigating many obstacles. • EE - designs “the brain”, sensors, actuators & wiring. • ME - designs body, gearing, actuators • CSE - writes software • CHEM E - designs (or selects) power supply. • MAT’L SCI - materials

  4. 1 ft 1ft 4 ft 68” 4 ft 2 ft Problem

  5. Constraints • Robot cannot be touched once the competition has started. • Max robot dimensions at start of competition - 1 ft x 1 ft x 1 ft • Wheelchairs and cars sending messages will be disqualified.

  6. Robot Construction & Programming Logic • Three constructions • Decided on final design • Programming Logic that was used

  7. Design Ideas • Tread Design • Very stable • Goes straight on flat • Hard time climbing • Big Wheel Design • Very Fast • Climbs Well • Not straight and little torque • Gear Design • Same as Big wheel design • Gears add torque to get over obstacles

  8. Design Idea # 2

  9. Actual Design • Gears for added torque • Wide base for stability • Large tires for maximum clearance • Front Double bumper • Back Single Bumper

  10. Defender Program

  11. Car Robot

  12. Wheelchair Robot

  13. Robot Design

  14. Wheelchair Performance • Wheelchair Robot Analysis: • What worked/didn’t work? • What impeded the Wheelchairs success? • Software problems or future changes?

  15. Car Performance • Car Robot Analysis: • What worked/didn’t work? • What impeded the Cars success? • Software problems or future changes?

  16. Defender Performance • Defender Robot Analysis: • What worked/didn’t work? • What impeded the Defenders success? • Software problems or future changes?

  17. 1 ft 1ft 4 ft 68” 4 ft 2 ft Course

  18. Conclusion • The robot design has to be one that can maneuver through the course as a wheelchair, cross the road as a car, and knock people off the road as defender but there are other things also to consider. • The robot is light and uses a minimal amount of materials. • It uses a complex gear system that offers a large amount of torque, yet still can move quickly through the course. • It has unique features, ex. back bumper, that sets it apart from other teams. • Despite a poor finish in the competition, 68 pts, programming plans were complex and just require a few more adjustments. • Also, there is an effect due RCX and light sensor problems. • The car had the largest problems during competition, but includes programming that would recognize the street, go to the wall, and then stop. • The defender has an attack program, where it moves back and forth, but when the sensor is hit it speeds quickly in that direction. It also send out message one to stop the other robots.

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