1. ECE 477 Final Presentation Team 5  Fall 2009 Left to right: Ben, Dennis, Jacqui, Ian

2. Outline Project overviewProject overview Block diagramBlock diagram Design challengesDesign challenges Individual contributionsIndividual contributions Project demonstrationProject demonstration Questions / discussionQuestions / discussion

3. Project Overview Next generation communication system for vehicles – –Simple, real-time visual communication Multi-touch input – –Driver’s gestures produce an output on LEDs around the perimeter of a car in 8 possible directions (pi/4 radians) Color-coded messages – –Tri-color LEDs produce blue, green, yellow, orange, and red outputs

4. Block Diagram

5. Design Challenges PCB CapSense routingPCB CapSense routing –Each of 9 PSoCs is routed to 30 buttons –Touch surface has minimal traces; space is dominated by buttons –Each PSoC is electrically isolated

6. Design Challenges Implementing multi- touchImplementing multi- touch –How to determine number of fingers? –How to determine direction of fingers? –How to deal with significant noise issues?

7. Individual Contributions Team Leader – Ian OliverTeam Leader – Ian Oliver Team Member 2 – Ben CarterTeam Member 2 – Ben Carter Team Member 3 – Jacqui DickersonTeam Member 3 – Jacqui Dickerson Team Member 4 – Dennis LeeTeam Member 4 – Dennis Lee

8. Team Leader – Ian Oliver PCB designPCB design –Touchpad array –LED Panel PCBs Populated multi-touch board and PIC18 boardPopulated multi-touch board and PIC18 board PIC18 communication modulesPIC18 communication modules –I2C, UART LED output algorithmLED output algorithm Poster and video editingPoster and video editing

9. Member 2 – Ben Carter Component SelectionComponent Selection Hardware InterfacingHardware Interfacing –All dsPIC peripheral initializations through data array construction –PIC18 peripheral initialization –Debugged communication for dsPIC/PSOC and dsPIC/PIC18 Populated LED Panel PCBsPopulated LED Panel PCBs

10. Member 3 – Jacqui Dickerson WebsiteWebsite PCB AnalysisPCB Analysis Patent ResearchPatent Research –Sifted thru almost 200 patents Car constructionCar construction –Fitted LED Panel PCBs inside car –Secured PIC18 Board to roof User Interface Box ConstructionUser Interface Box Construction –Sawed hole for touch pad –Drilled holes for LEDs, Reset Button, and Power Connector

11. Member 4 – Dennis Lee Researched multi-touch technologyResearched multi-touch technology Developed touchpad controllers (PSoCs)Developed touchpad controllers (PSoCs) –Configured peripherals to detect finger input –Wrote software to transmit input over I2C Developed multi-touch algorithmDeveloped multi-touch algorithm –Counted number of fingers –Determined direction of fingers –Debugged noise issues from touchpad Reliability analysisReliability analysis Software design narrativeSoftware design narrative

12. Project Demonstration 1.The ability to determine direction of a finger sweep on a touch pad array. 2.The ability to determine the number of fingers used on a touch pad array. 3.The ability to produce at least two meaningful LED patterns. 4.The ability to determine force of acceleration on a car. 5.The ability to wirelessly transmit data from the multi- touch signal processor to the LED cluster controllers. Link to demo video Link to demo video

13. Questions / Discussion