1. Track Timer Finial Semester Presentation Senior Design II November 29, 2011

2. Team Members John Rose Electrical Engineering VDIP Power System Jonathan Moorhead Computer Engineering Enclosure Keypad Interface Michael Nguyen Electrical Engineering Timing Accuracy VDIP Chad Pumphrey Computer Engineering VDIP LCD Interface

3. Advisor Dr. Follett Assistant Professor

4. Overview Background Problem Solution Constraints ◦ Technical ◦ Practical System Testing Enclosure Production Questions/Comments

5. Background Starkville High School has previously had to borrow timing systems for their races. Even today, they do not have a timing system for practical and competitive usage. Dr. Follett has experience with timing devices.

6. Problem Timing Systems cost over $500. The thermal printer and the recurring cost of thermal paper. High School’s Physical Education program cannot afford this type of equipment.

7. Solution To develop a cost effective timing system for high school and other teams with limited budgets. Replace Thermal printer with removable non-volatile media.

8. Hardware Block Diagram Plunger Inputs Keypad Display Microcontroller Storage Power Supply External Timer

9. Technical Constraints NameDescription Timing Accuracy Timer must have an accuracy of 0.01 seconds after 10 minutes of continuous running. Battery lifeBatteries must operate for at least 12 hours. Display Characteristics Display must be visible in mild outdoor conditions. Push Button Push Buttons must be a single momentary switch, and their cords must be at least 12 feet in length or more. Data StorageMemory must store at least 8,000 times.

10. Practical Constraints TypeNameDescription EconomicCost Total prototyping price must be under $400.00. EnvironmentalOperating ConditionsThe Track Timer must be weather resistant.

11. The Competition, Sprint8 price $969.00 [1]. The Track Timer has taken less than $400.00 to prototype. Economic

12. Environmental Intended for outdoor usage. Must be Weather Resistant.

13. System Testing Lab Test Accuracy Test Battery Life USB drive malfunction check Field Test Track & Cross-Country Time-Position Matchup on Computer Report Durability Test LCD Visibility

14. Synchronous, Start 1 32 Lab Test - Accuracy Test

15. Lab Test - Battery Life

16. Field Test - Events September 29, 2011 – Initial Field Testing October 22, 2011 - Starkville High School Hosts a Cross-Country Meet. October 29, 2011 - Run for Education

17. Field Test Starkville Cross-Country Meet - October 22, 2011

18. Field Test Run For Education - October 29, 2011

19. System Testing  Achieved Technical Constraint  Accuracy  Battery Life  Display Characteristics  Achieved Practical Constraint  Durability  Environmental

20. Enclosure Modified a Pre-Made Enclosure Laser Printer ◦ Model A ◦ Model B 3-D Printer

21. Enclosure

22. Enclosure

23. Enclosure

24. Enclosure

25. Enclosure

26. Enclosure

27. Packaging All Inclusive ◦ TrackTimer Device ◦ 8 RJ11 Plungers ◦ 2 Mini-USB drives (4GB/each) ◦ 4 AA Batteries ◦ User Manual Software w/ Barcode Scanner ◦ Meet Manager

28. Bill of Materials [2]

29. Reference [1] Stopwatch Central.”Sprint Timing Systems” Sprint 8 Track Package. 2011. http://www.stopwatchcentral.com/sprint/sprint.htm http://www.stopwatchcentral.com/sprint/sprint.htm [2] www.Digi-key.comwww.Digi-key.com

30. Questions