1. Electronic Dartboard – http://www.ecs.umass.edu/ece/sdp/sdp06/fischetti/ PDR PRESENTATION Electronic Dartboard (ED) Azum Z. Ali, Jason Ngo, Matthew O’Connell, Han Truong Faculty Advisor: Prof Massimo (Max) V. Fischetti Thursday, October 13, 2005

2. Electronic Dartboard – http://www.ecs.umass.edu/ece/sdp/sdp06/fischetti/ Introduction ● Building an Electronic Dartboard (“ED”) that automatically keeps track of score ● Recreational activity for a variety of potential customers ● Automation is provided by electronic system ● Sensing Array ● Intermediate hardware for data transmission ● Software for computation and output

3. Electronic Dartboard – http://www.ecs.umass.edu/ece/sdp/sdp06/fischetti/ Background ● Dartboard on the market – made out of plastic – very unreliable – unattractive – not regulation – use plastic darts ● ED's Design – horse hair/cork – reliable scoring – sleek design – regulation size – any standard darts

4. Electronic Dartboard – http://www.ecs.umass.edu/ece/sdp/sdp06/fischetti/ Motivation Darts are a fun recreational activity Project deliverable fun and enjoyable End disputes over scoring, cheating No longer responsible for scorekeeping, more focus on fun and gameplay Great to demo for SDP06

5. Electronic Dartboard – http://www.ecs.umass.edu/ece/sdp/sdp06/fischetti/ Overview Sectionalized board Sensing electronics Data Transmission Software Combine into functional design

6. Electronic Dartboard – http://www.ecs.umass.edu/ece/sdp/sdp06/fischetti/ Long-term goal ● MDR – Working reliable sense system – Efficient data transmission ● Final Design – All sections working – Accurate scoring

7. Electronic Dartboard – http://www.ecs.umass.edu/ece/sdp/sdp06/fischetti/ The Present Situation ● Researched hardware specs ● All sensors are on order (multiple options) ● Micro-controllers chosen ● Chose serial transmission ● Overall plan agreed upon

8. Electronic Dartboard – http://www.ecs.umass.edu/ece/sdp/sdp06/fischetti/ Development up to present ● Members researched different sensors ● Spare dartboard for implementation ● Extra parts for testing ● Sensors agreed to test – Strain gauges, Piezoelectric, Push-Button ● Sensor rejected – Laser grid (cost, unfeasible implementation)

9. Electronic Dartboard – http://www.ecs.umass.edu/ece/sdp/sdp06/fischetti/ Potential Alternatives Strain gauges – pressure applied resistance goes up – create resistor circuit for voltage differences Pros – Simple design – Sensitive to pressure – Low cost Cons – Is it too sensitive?

10. Electronic Dartboard – http://www.ecs.umass.edu/ece/sdp/sdp06/fischetti/ Potential Alternatives(contd.) Piezoelectric – Disturbance in Quartz crystals on Piezo material induces a voltage Pros – Low cost – Piezo material can cover area needed – Good sensitivity Cons – Could damage Piezo film with darts

11. Electronic Dartboard – http://www.ecs.umass.edu/ece/sdp/sdp06/fischetti/ Potential Alternatives(contd.) Pushbutton –Spring is compressed, voltage signal output Pros –reliable –different sizes, shapes, springs –Low cost Cons –sensitivity of pressure applied –spring constants

12. Electronic Dartboard – http://www.ecs.umass.edu/ece/sdp/sdp06/fischetti/ System Block Diagram

13. Electronic Dartboard – http://www.ecs.umass.edu/ece/sdp/sdp06/fischetti/ ● Pressure sensors ● A/D Converter ● Foot Line Sensor ● Power supply Dartboard Electronics

14. Electronic Dartboard – http://www.ecs.umass.edu/ece/sdp/sdp06/fischetti/ ● Receive Data ● Store Data ● Convert Data ● Transmit Data ● Serial Connection Microprocessor

15. Electronic Dartboard – http://www.ecs.umass.edu/ece/sdp/sdp06/fischetti/ ● Store Data ● Compute Data ● Display Data ● GUI Computer Program

16. Electronic Dartboard – http://www.ecs.umass.edu/ece/sdp/sdp06/fischetti/ Proposed MDR Specifications ● One or more sensing options working ● Operational sensor applied to sections on dartboard ● Serial transmission of bits to computer ● Computer recognizes values assigned to sections

17. Electronic Dartboard – http://www.ecs.umass.edu/ece/sdp/sdp06/fischetti/ Conclusion ● Automatically keep score ● Efficient and Reliable Sensing ● Values recognized and Displayed on GUI ● Overall fun and hassle-free gameplay!

18. Electronic Dartboard – http://www.ecs.umass.edu/ece/sdp/sdp06/fischetti/ Any questions?