Lego Mindstorms Group #3
description
Transcript of Lego Mindstorms Group #3
Lego MindstormsLego Mindstorms
Group #3Group #3
WestonWestonJohnJohn
HamptonHamptonKyleKyle
OutlineOutline
IntroductionIntroduction Robot Construction & Programming Robot Construction & Programming
LogicLogic Performance Results and DiscussionPerformance Results and Discussion ConclusionConclusion
IntroductionIntroduction Use of robotics throughout the ages: from Mars Use of robotics throughout the ages: from Mars
rovers to children’s toys.rovers to children’s toys. Robotics role in aiding the immobilized.Robotics role in aiding the immobilized. If properly designed, robots are capable of If properly designed, robots are capable of
navigating many obstacles.navigating many obstacles. EE - designs “the brain”, sensors, actuators & EE - designs “the brain”, sensors, actuators &
wiring. wiring. ME - designs body, gearing, actuatorsME - designs body, gearing, actuators CSE - writes softwareCSE - writes software CHEM E - designs (or selects) power supply.CHEM E - designs (or selects) power supply. MAT’L SCI - materialsMAT’L SCI - materials
ProblemProblem
4 ft
4 ft
1 ft 1ft
2 ft
68”
ConstraintsConstraints Robot cannot be touched once the Robot cannot be touched once the
competition has started.competition has started. Max robot dimensions at start of Max robot dimensions at start of
competition - 1 ft x 1 ft x 1 ftcompetition - 1 ft x 1 ft x 1 ft Wheelchairs and cars sending Wheelchairs and cars sending
messages will be disqualified.messages will be disqualified.
Robot Construction & Programming Robot Construction & Programming LogicLogic
Three constructionsThree constructions Decided on final designDecided on final design Programming Logic that Programming Logic that
was usedwas used
Design IdeasDesign Ideas• Tread Design1. Very stable2. Goes straight on flat3. Hard time climbing• Big Wheel Design1. Very Fast2. Climbs Well3. Not straight and little
torque• Gear Design1. Same as Big wheel
design2. Gears add torque to get
over obstacles
Design Idea # 2Design Idea # 2
Actual DesignActual Design Gears for added torqueGears for added torque Wide base for stabilityWide base for stability Large tires for maximum clearanceLarge tires for maximum clearance Front Double bumper Front Double bumper Back Single BumperBack Single Bumper
Defender ProgramDefender Program
Car RobotCar Robot
Wheelchair RobotWheelchair Robot
Robot DesignRobot Design
Wheelchair PerformanceWheelchair Performance
Wheelchair Robot Analysis:• What worked/didn’t work?• What impeded the Wheelchairs success?• Software problems or future changes?
Car PerformanceCar Performance
Car Robot Analysis:• What worked/didn’t work?• What impeded the Cars success?• Software problems or future changes?
Defender PerformanceDefender Performance
Defender Robot Analysis:• What worked/didn’t work?• What impeded the Defenders success?• Software problems or future changes?
CourseCourse
4 ft
4 ft
1 ft 1ft
2 ft
68”
ConclusionConclusion The robot design has to be one that can maneuver through the 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 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 off the road as defender but there are other things also to consider.consider.
The robot is light and uses a minimal amount of materials.The robot is light and uses a minimal amount of materials. It uses a complex gear system that offers a large amount of It uses a complex gear system that offers a large amount of
torque, yet still can move quickly through the course.torque, yet still can move quickly through the course. It has unique features, ex. back bumper, that sets it apart from It has unique features, ex. back bumper, that sets it apart from
other teams.other teams. Despite a poor finish in the competition, 68 pts, programming Despite a poor finish in the competition, 68 pts, programming
plans were complex and just require a few more adjustments.plans were complex and just require a few more adjustments.• Also, there is an effect due RCX and light sensor problems.Also, there is an effect due RCX and light sensor problems.
The car had the largest problems during competition, but includes The car had the largest problems during competition, but includes programming that would recognize the street, go to the wall, and programming that would recognize the street, go to the wall, and then stop.then stop.
The defender has an attack program, where it moves back and The defender has an attack program, where it moves back and forth, but when the sensor is hit it speeds quickly in that direction. forth, but when the sensor is hit it speeds quickly in that direction. It also send out message one to stop the other robots. It also send out message one to stop the other robots.