Accessible Manufacturing Accessible Manufacturing Equipment Phase 2Equipment Phase 2

ProposalProposal

Team 2Team 2

Nicholas NeumannRalph Prewett

Jonathan BroukerLi Tian

Felix Adisaputra

ContentsContents

IntroductionIntroductionBackgroundBackgroundConceptual Design DescriptionsConceptual Design DescriptionsProposed Design SolutionProposed Design SolutionConclusionConclusion

IntroductionIntroduction

Existing Ribbon Cutting MachineExisting Ribbon Cutting MachinePIC ProgrammingPIC Programming

C CodeC CodeTiming LoopTiming Loop

Stepper MotorsStepper MotorsParallel Operation (Belt)Parallel Operation (Belt)

Cam MotorsCam MotorsRotary CutterRotary CutterStationary and Movable ClampsStationary and Movable Clamps

Introduction (Continued)Introduction (Continued)

Major ProblemsMajor ProblemsProgramming InterfaceProgramming Interface

ComplexityComplexityDifficult MaintenanceDifficult Maintenance

Stepper MotorsStepper MotorsInaccuracy and InconsistencyInaccuracy and InconsistencySlow OperationSlow OperationDrivers Heat IssuesDrivers Heat Issues

BackgroundBackground

Customer RequirementsCustomer RequirementsProgramming InterfaceProgramming Interface

SimplicitySimplicityEasy MaintenanceEasy Maintenance

MotorsMotorsPrecision and AccuracyPrecision and AccuracyVariable Speed ControlVariable Speed ControlHigher Maximum Speed of OperationHigher Maximum Speed of Operation

Background (Continued)Background (Continued)

Primary ObjectivesPrimary ObjectivesNew Programming InterfaceNew Programming Interface

SimplicitySimplicityFuture ImprovementFuture Improvement

New MotorsNew MotorsDriversDriversBetter PerformanceBetter Performance

Background (Continued)Background (Continued)

Secondary ObjectivesSecondary ObjectivesCutter ReplacementCutter Replacement

Noise ReductionNoise ReductionSafety ImprovementSafety Improvement

Rollers ReplacementRollers ReplacementFriction ReductionFriction Reduction

Fan ReplacementFan ReplacementReliabilityReliability

AestheticsAestheticsWire HarnessWire Harness

FAST DiagramFAST Diagram

Cut Ribbon

Basic Function

Secondary Function

Secondary Function

Cut Precisely

Secondary Function

Control Speed Accept Input

Control length Drive Servo

Establish Length Accept Input

Display Length

Announce Length

Prevent jam Remove Ribbon

Open Clamps

Flick Ribbon

Conceptual Design DescriptionsConceptual Design Descriptions

LEGO SolutionLEGO SolutionLEGO Mindstorms NXT-GLEGO Mindstorms NXT-G

Easier ApproachEasier ApproachFuture ImprovementFuture Improvement

LEGO Servo MotorLEGO Servo MotorCompatibilityCompatibility9V DC Motor9V DC MotorPrecision and AccuracyPrecision and Accuracy

Conceptual Design DescriptionsConceptual Design Descriptions(Continued)(Continued)

Conceptual Design DescriptionsConceptual Design Descriptions(Continued)(Continued)

Simplified Code SolutionSimplified Code SolutionC Language CodeC Language Code

SimplificationSimplificationWell CommentedWell Commented

DC MotorDC MotorPID ControllerPID Controller

Conceptual Design DescriptionsConceptual Design Descriptions(Continued)(Continued)

Hybrid SolutionHybrid SolutionPIC Microcontroller (C Code)PIC Microcontroller (C Code)

AudioAudioDisplayDisplay

LEGO NXT Brick (Mindstorm)LEGO NXT Brick (Mindstorm)Movable Clamp ControlMovable Clamp ControlFuture ImprovementFuture Improvement

LEGO DC Servo MotorLEGO DC Servo MotorCompatibilityCompatibilityPrecision and AccuracyPrecision and Accuracy

Conceptual Design DescriptionsConceptual Design Descriptions(Continued)(Continued)

Solution Selection MatrixSolution Selection Matrix

Proposed Design SolutionProposed Design Solution

LEGO SolutionLEGO SolutionLEGO NXT BrickLEGO NXT Brick

Controlling the DC MotorControlling the DC MotorCutter MechanismCutter MechanismStationary ClampStationary ClampOpen/Close Function of the Open/Close Function of the

Clamp’s JawsClamp’s Jaws

LEGO Servo MotorLEGO Servo MotorTransporting the Movable Transporting the Movable

ClampClamp

Proposed Design SolutionProposed Design Solution(Continued)(Continued)

Length InputLength InputCurrent Buttons Interface with LEGO NXT BrickCurrent Buttons Interface with LEGO NXT Brick

7-Segment Display7-Segment DisplayControlled by PIC to Use Fewer NXT I/O Ports Controlled by PIC to Use Fewer NXT I/O Ports

Audio OutputAudio OutputLEGO NXT Brick Sound SystemLEGO NXT Brick Sound System

Proposed Design SolutionProposed Design Solution(Continued)(Continued)

Cutter ReplacementCutter ReplacementRollers ReplacementRollers Replacement

Metal RollersMetal Rollers

Fan ReplacementFan ReplacementFlipperFlipper

ConclusionConclusion

AdvantagesAdvantagesMore Customizable ProgrammingMore Customizable ProgrammingBetter Accuracy and PrecisionBetter Accuracy and PrecisionCompatibilityCompatibility

LEGO NXT Brick & LEGO Servo MotorsLEGO NXT Brick & LEGO Servo Motors

Conclusion (Continued)Conclusion (Continued)

DisadvantagesDisadvantages LEGO NXT BrickLEGO NXT Brick

Limitation of I/O PortsLimitation of I/O Ports Lack of Complex Features in the CompilerLack of Complex Features in the Compiler

LEGO Servo MotorLEGO Servo Motor Low Overall TorqueLow Overall Torque

Conclusion (Continued)Conclusion (Continued)

Project Management PlanProject Management PlanNicholasNicholas

Programming InterfaceProgramming InterfaceSensorsSensors

RalphRalphProgramming InterfaceProgramming InterfaceMotor DriversMotor Drivers

JonathanJonathanLEGO Servo Motor InterfaceLEGO Servo Motor InterfaceMotor DriversMotor Drivers

Conclusion (Continued)Conclusion (Continued)

LiLiFlipper ImplementationFlipper ImplementationFlipper InterfaceFlipper InterfaceAudio OutputAudio Output

FelixFelixCutter MechanismCutter MechanismCutter InterfaceCutter Interface7-Segment Display7-Segment Display

Conclusion (Continued)Conclusion (Continued)

Quantity Product Description Cost

1 LEGO Mindstorms NXT 2.0* $299.99

2 Bronze Rollers $3.02

1 New Cutter $30.00

1 Flipper $5.00

Miscellaneous $10.00

TOTAL $348.01

*Note: LEGO Mindstorms NXT 2.0 is already provided by our sponsor.

Proposed Budget

ReferencesReferences

LEGO Mindstorms NXT 2.0LEGO Mindstorms NXT 2.0http://shop.lego.com/Product/?p=8547

Extreme NXT:Extreme NXT:Extending the LEGO Mindstorms NXT to the Extending the LEGO Mindstorms NXT to the

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