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Table of Contents

Table of Contents. Project Overview (brief explanation of leukodystrophy ) Reviewed customer needs Reviewed engineering specs Detailed system lay out Mechanical design Electrical design Software design BOM Cost Layout Current main risk assessment MSD II plan Test Plan.

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Table of Contents

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  1. Table of Contents • Project Overview (brief explanation of leukodystrophy) • Reviewed customer needs • Reviewed engineering specs • Detailed system lay out • Mechanical design • Electrical design • Software design • BOM • Cost Layout • Current main risk assessment • MSD II plan • Test Plan

  2. Project Overview – Leukodystrophy and Goal Leukodystrophy: • Genetic condition in which myelin sheaths in neurons degrade over time • Leads to difficulty moving and speaking Our goal: • Provide a customer who has leukodystrophy with a way to enjoy electronic games using limited movements

  3. Revised Customer Needs

  4. Engineering Specifications (Revised)

  5. System Layout

  6. TOP LEVEL MECHANICAL DESIGN

  7. A Preview…

  8. Mounting Options

  9. Mech. Design – subsystems • Baseboard Assembly • Slide Mount Assembly (left and right) • Armrest Assembly (left and right) • Enclosure Assembly • Front Panel Assembly • Mount/Handle Assembly

  10. Mech. Design – Purchase Component selection and analysis • Joystick Options – Pros/cons • Baseboard Option – Purchase Option • Baseboard Options – weight, cost, pros/cons • Baseboard Options – Stress Analysis • Max power dissipation allowable with enclosure

  11. Mech. Design – Critical/manufactured components • Baseboard Platform • Swivel Platforms (top and bottom) • Front Plate • Control Handles • Mount/Handle Brackets • Armrests • Slide Mounts?

  12. Elec. Design – Block Diagram

  13. Elec. Design - Each Schematic

  14. Elec. Design – Component Selection and Analysis • Cords • Gold plated switches • Battery

  15. Software High Level Layout

  16. Microcontroller Selection

  17. Final Choice: Arduino Micro • Familiar language semantics • Many examples/libraries available • USB interface on-chip • Free IDE • Cross-platform (Windows, Mac, Linux) • Sufficient I/O and processing capability • Small and lightweight • Relatively inexpensive

  18. Arduino Software Flow Chart

  19. GUI_App Model Diagram

  20. Samsung Galaxy Tab Interface Methodologies • Method 1 (preferred) • Method 2

  21. BOM

  22. Cost Distribution

  23. Risk Management

  24. MSD I Plan

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