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)

7. System Layout

8. TOP LEVEL MECHANICAL DESIGN

28. A Preview…

32. Mounting Options

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

34. 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

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

36. Elec. Design – Block Diagram

37. Elec. Design - Each Schematic

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

39. Software High Level Layout

40. Microcontroller Selection

41. 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

43. Arduino Software Flow Chart

44. GUI_App Model Diagram

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

47. BOM

48. Cost Distribution

49. Risk Management

50. MSD I Plan

51. MSD II Plan

53. Testing Plans Table of specs and corresponding testing plans