Accessible Manufacturing Equipment Phase 2 Proposal Team 2 Nicholas Neumann Ralph Prewett Jonathan Brouker Li Tian Felix Adisaputra

Contents Introduction Introduction Background Background Conceptual Design Descriptions Conceptual Design Descriptions Proposed Design Solution Proposed Design Solution Conclusion Conclusion

Introduction Existing Ribbon Cutting Machine Existing Ribbon Cutting Machine PIC Programming PIC Programming C Code C Code Timing Loop Timing Loop Stepper Motors Stepper Motors Parallel Operation (Belt) Parallel Operation (Belt) Cam Motors Cam Motors Rotary Cutter Rotary Cutter Stationary and Movable Clamps Stationary and Movable Clamps

Introduction (Continued) Major Problems Major Problems Programming Interface Programming Interface Complexity Complexity Difficult Maintenance Difficult Maintenance Stepper Motors Stepper Motors Inaccuracy and Inconsistency Inaccuracy and Inconsistency Slow Operation Slow Operation Drivers Heat Issues Drivers Heat Issues

Background Customer Requirements Customer Requirements Programming Interface Programming Interface Simplicity Simplicity Easy Maintenance Easy Maintenance Motors Motors Precision and Accuracy Precision and Accuracy Variable Speed Control Variable Speed Control Higher Maximum Speed of Operation Higher Maximum Speed of Operation

Background (Continued) Primary Objectives Primary Objectives New Programming Interface New Programming Interface Simplicity Simplicity Future Improvement Future Improvement New Motors New Motors Drivers Drivers Better Performance Better Performance

Background (Continued) Secondary Objectives Secondary Objectives Cutter Replacement Cutter Replacement Noise Reduction Noise Reduction Safety Improvement Safety Improvement Rollers Replacement Rollers Replacement Friction Reduction Friction Reduction Fan Replacement Fan Replacement Reliability Reliability Aesthetics Aesthetics Wire Harness Wire Harness

FAST Diagram

Conceptual Design Descriptions LEGO Solution LEGO Solution LEGO Mindstorms NXT-G LEGO Mindstorms NXT-G Easier Approach Easier Approach Future Improvement Future Improvement LEGO Servo Motor LEGO Servo Motor Compatibility Compatibility 9V DC Motor 9V DC Motor Precision and Accuracy Precision and Accuracy

Conceptual Design Descriptions (Continued)

Simplified Code Solution Simplified Code Solution C Language Code C Language Code Simplification Simplification Well Commented Well Commented DC Motor DC Motor PID Controller PID Controller Conceptual Design Descriptions (Continued)

Hybrid Solution Hybrid Solution PIC Microcontroller (C Code) PIC Microcontroller (C Code) Audio Audio Display Display LEGO NXT Brick (Mindstorm) LEGO NXT Brick (Mindstorm) Movable Clamp Control Movable Clamp Control Future Improvement Future Improvement LEGO DC Servo Motor LEGO DC Servo Motor Compatibility Compatibility Precision and Accuracy Precision and Accuracy Conceptual Design Descriptions (Continued)

Solution Selection Matrix Engineering Criteria Importance Possible Solutions ● = 9 (Strong) Lego Servo Motor DC Motor LEGO Mindstorms LabVIEW RobotC C++ Code Connectors Safety Guards New Cutter New Controller Box Flipper ⃝ = 3 (Moderate) Δ = 1 (Weak) Speed of Operation 5⃝● Δ Δ Accuracy and Precision 5●⃝ Δ Safety 4 ●⃝ Aesthetics 2 ● ⃝● Revisable Software 5 ●⃝ΔΔ Noise 2ΔΔ ● Compatibility 3●Δ Mechanical Maintenance 3 Δ Maturity of Technology 4 Δ⃝⃝⃝ Robustness 4⃝●Δ⃝⃝● ● TOTALS

Proposed Design Solution LEGO Solution LEGO Solution LEGO NXT Brick LEGO NXT Brick Controlling the DC Motor Controlling the DC Motor Cutter Mechanism Cutter Mechanism Stationary Clamp Stationary Clamp Open/Close Function of the Clamp’s Jaws Open/Close Function of the Clamp’s Jaws LEGO Servo Motor LEGO Servo Motor Transporting the Movable Clamp Transporting the Movable Clamp

Proposed Design Solution (Continued) Length Input Length Input Current Buttons Interface with LEGO NXT Brick Current Buttons Interface with LEGO NXT Brick 7-Segment Display 7-Segment Display Controlled by PIC to Use Fewer NXT I/O Ports Controlled by PIC to Use Fewer NXT I/O Ports Audio Output Audio Output LEGO NXT Brick Sound System LEGO NXT Brick Sound System

Proposed Design Solution (Continued) Cutter Replacement Cutter Replacement Rollers Replacement Rollers Replacement Metal Rollers Metal Rollers Fan Replacement Fan Replacement Flipper Flipper

Conclusion Advantages Advantages More Customizable Programming More Customizable Programming Better Accuracy and Precision Better Accuracy and Precision Compatibility Compatibility LEGO NXT Brick & LEGO Servo Motors LEGO NXT Brick & LEGO Servo Motors

Conclusion (Continued) Disadvantages Disadvantages LEGO NXT Brick LEGO NXT Brick Limitation of I/O Ports Limitation of I/O Ports Lack of Complex Features in the Compiler Lack of Complex Features in the Compiler LEGO Servo Motor LEGO Servo Motor Low Overall Torque Low Overall Torque

Conclusion (Continued) Project Management Plan Project Management Plan Nicholas Nicholas Programming Interface Programming Interface Sensors Sensors Ralph Ralph Programming Interface Programming Interface Motor Drivers Motor Drivers Jonathan Jonathan LEGO Servo Motor Interface LEGO Servo Motor Interface Motor Drivers Motor Drivers

Conclusion (Continued) Li Li Flipper Implementation Flipper Implementation Flipper Interface Flipper Interface Audio Output Audio Output Felix Felix Cutter Mechanism Cutter Mechanism Cutter Interface Cutter Interface 7-Segment Display 7-Segment Display

Conclusion (Continued) QuantityProduct DescriptionCost 1LEGO Mindstorms NXT 2.0*$ Bronze Rollers$3.02 1New Cutter$ Flipper$5.00 Miscellaneous$10.00 TOTAL$ *Note: LEGO Mindstorms NXT 2.0 is already provided by our sponsor. Proposed Budget

References LEGO Mindstorms NXT 2.0 LEGO Mindstorms NXT Extreme NXT: Extreme NXT: Extending the LEGO Mindstorms NXT to the Next Level Extending the LEGO Mindstorms NXT to the Next Level