1. Ryan McLean John-Michael Mulesa Joe Perrin Zach Schoenberger Formal Design Review

2. Project Overview Project-Specific Success Criteria Block Diagram Component Selection Rationale Packaging Design Schematic & Theory of Operation PCB Layout & Considerations Software Design & Development Status Project Completion Timeline [Outline]

3. GPS-Based Head-Up Display – Multi-mode driving aid – GPS navigation – Google Maps® (GSM chip) – Performance data – Color display Infinite focus Dashboard-mounted [Project Overview]

4. 1.An ability to display speed and elevation (obtained using GPS). 2.An ability to display heading and G-force (obtained using compass and accelerometer). 3.An ability to toggle map overlays (obtained via GSM modem from Google Maps). 4.An ability to project a heads-up display focused at infinity. 5.An ability to change display brightness and vertical position. [Proposed PSSCs]

5. [Block Diagram]

6. Component Selection Rationale

7. Packaging Design

8. Size – Plenty to pack inside! – Limited external space Color – Matte black – Reduce/eliminate glare Material – Aluminum construction – Electronic components not affected [Packaging Design]

13. Schematic & Theory of Operation

14. GM862-GPS – GPS/GSM Unit – 3.5V operation – SCI connection to microcontroller – Query-based data retrieval Query sent from microcontroller Formatted, query-based data returned [Schematic & Theory of Operation]

16. HMC6352 – Digital Compass – 3.5V operation – I 2 C connection to microcontroller – Pass an address over I 2 C interface to listen to compass module [Schematic & Theory of Operation]

18. ADXL345 – Accelerometer – 3.5V operation – I 2 C connection to microcontroller – Pass an address over I 2 C interface to listen to accelerometer – Both accelerometer and compass are connected to one I 2 C bus [Schematic & Theory of Operation]

20. FT232RL – USB to RS232 Adapter – 3.5V CCIO – 5V CC – SCI connection to microcontroller – USB connection to ARM board [Schematic & Theory of Operation]

22. ATXMega16D4 – 3.5V operation – 12MHz frequency – Using: 2 SCI buses 1 I 2 C bus 1 PWM 1 ADC 4 GPIO [Schematic & Theory of Operation]

24. PCB Layout & Considerations

26. Peripheral Considerations Keep I 2 C components close together Keep USB to RS232 IC close to USB connector Headers to access I/O traces Test points on power rails to quickly measure voltage GSM/GPS unit can draw 2A – Uses direct connection to ground and power – Assumes no vias [PCB Layout & Considerations]

27. Microcontroller Considerations Locate microcontroller near middle of board Use 0.1μF decoupling capacitor for each power-ground pair Small current draw Internal oscillator [PCB Layout & Considerations]

28. Power Considerations Max current draw is about 2.2A – Traces will have to be able to cope with current draw Approximately 1.1mm traces – Need sufficient bulk capacitance – Minimize vias on power rails [PCB Layout & Considerations]

29. Software Design & Development Status

30. Polling the peripherals – Timer interrupt driven polling of the peripherals Accelerometer Digital compass Control knob for mirror – RTI driven peripherals All external buttons Controls Servo Motor – PWM signal used to control servo to adjust mirror – Based on change in Control Knob GSM Data – Retrieves data constantly based on SCI interrupts – Immediately signals ARM board and sends data [Microcontroller]

31. Interfacing with the ARM board – Forwards data about peripherals upon request Based on custom instruction set over SCI – ARM board can ask for data about specific peripheral – Interrupt driven – Forwards GSM data over SCI every time new data is received [Microcontroller]

32. Communicates with microcontroller to get raw data – Accelerometer, Digital Compass data Deals with all image manipulation Sends final image to projector [ARM Board]

33. Project Completion Timeline

34. [Project Completion Timeline] WeekMilestoneItems Due 8 Package design to EE shop PCB, schematic revisions complete Formal Design Review 9 Image display software started Microcontroller software started Projector ordered Final PCB Final Schematic Proof-of-Parts 10Spring Break 11 MCU-to-ARM communication Package complete Send/receive via GSM modem verified Receive GPS data verified Software Design Narrative 12 Image display software finished PCB assembled, tested Patent Liability Analysis

35. [Project Completion Timeline] WeekMilestoneItems Due 13 External control functionality Projector, mirror mounted in package Reliability and Safety Analysis 14 MCU, ARM mounted in package Initial “full-package” testing Ethical and Environmental Impact Analysis 15 Dashboard mount fabrication Vehicle testing Final documentation User Manual 16 Guest vehicle demonstrations Project complete PSSC Demos

36. Project Overview Project-Specific Success Criteria Block Diagram Component Selection Rationale Packaging Design Schematic & Theory of Operation PCB Layout Software Design & Development Status Project Completion Timeline [Summary]

37. [Questions?]