1. Electrical and Computer Engineer Large Portable Projected Peripheral Touchscreen Team Jackson Brian Gosselin Greg Langlois Nick Jacek Dmitry Kovalenkov L3PT Preliminary Design Review

2. 2 Electrical and Computer Engineering Tablet PCs  Single user  Small workspace 10’’ diagonal screen  Stand alone device  Portable  Multi touch capabilities  Price $500-$1000

3. 3 Electrical and Computer Engineering Smartboard  Large workspace  Single / Multi user  Multi touch capabilities  Not portable  Expensive, > $1,000

4. 4 Electrical and Computer Engineering Light Blue Optics: Light Touch  Small interactive screen 10.1’’ diagonal Projected on flat surfaces  Multi touch capabilities  Stand alone device  Portable  Not commercially available

5. 5 Electrical and Computer Engineering Desired Specifications  Affordable  Portable  Large workspace  Single / Multi user  Multi touch capabilities None of these devices meet all of the above specifications.

6. 6 Electrical and Computer Engineering Engineering solution.. L3PT !  Affordable  Portable  Large interactive screen Projected on flat surfaces Goal 30-40’’ diagonal screen  Single / Multi user  Multi touch capabilities  Windows 7 peripheral

7. 7 Electrical and Computer Engineering Engineering solution.. L3PT ! Projector IR Camera Projected Interactive Screen Microprocessor (Image Processing) USB Connection

8. 8 Electrical and Computer Engineering Block Diagram Projector IR camera IR emitted light Multi touch driver Image processing Computer Microprocessor

9. 9 Electrical and Computer Engineering FAVI Mini Pocket Projector (E1-LED-PICO)  Resolution 640x480  USB connection  4.5’’ x 2.4’’ x 1’’  Weight: 4 ounces (w/o batteries)  Displays up to 80’’  Price $200

10. 10 Electrical and Computer Engineering Camera with IR Filter  Resolution 1300x1040  I2C interface  Change color filter to IR filter

11. 11 Electrical and Computer Engineering Microprocessor  ATmega328P  Using Arduino for prototyping code  PDIP28 package with boot loader  Tasks: Camera interaction Image processing

12. 12 Electrical and Computer Engineering Detection Methods (Option 1)  Layer of IR light  Object that breaks the plane reflects light  Self contained  Possible shadowing IR light

13. 13 Electrical and Computer Engineering Detection Methods (Option 2)  Pens with IR LEDs  Switch turns on LED  Reduced shadowing  LED placement?  Still portable?

14. 14 Electrical and Computer Engineering Image Processing  Brightest areas = touches  Scale touch locations to PC coordinates  Send coordinates to computer

15. 15 Electrical and Computer Engineering Windows 7 Driver  Setup calibration  Multi touch interface  Send touch coordinates to OS

16. 16 Electrical and Computer Engineering Individual Roles  Brian Team Lead / Webmaster Physical assembly USB communication  Dmitry Camera / IR filtering Integration of parts Nick Driver package Integrating multi-touch Greg Image processing Position detection

17. 17 Electrical and Computer Engineering Budget ComponentCost Projector$200 Camera$35 IR Filter$6 Microprocessor$10 20 IR LEDs$20 PCB$100 Total$371

18. 18 Electrical and Computer Engineering Potential Challenges  Shadowing  Delay  Position of projector and camera  Alignment (Projector vs. camera)  Choice of detection method

19. 19 Electrical and Computer Engineering MDR  Choose detection method  Position of projector and camera  Use camera to detect infrared light  Extract coordinates of touch locations

20. 20 Electrical and Computer Engineering Gantt Chart Task # Task Name OctNovDecJanFebMarApr 1 Camera IR detection 2 Extract Coordinates 3 PCB Design 4 Send coordinates 5 Win 7 Driver 6 Integration of Parts 7 Final Testing

21. 21 Electrical and Computer Engineering Conclusion L3PT  Interactive product (Good for demo)  Mix of software and hardware  Single / Multi user  Multi touch capabilities  Feasible for SDP cost and time constraints