Electrical and Computer Engineering Buddy Bug Matt Brennan Nick Nunns Brian Roberts Jeremy Vight Preliminary Design Review

2 Electrical and Computer Engineering Background  Wide spread use of personal electronics devices (PEDs) MP3 players, cell phones, personal gaming systems Willingness to pay iPod = $250 Razor = $199 The interest in gadgetry has become mainstream*  Traditional PEDs discourage: Interaction with local social environment New social networks *Steve Jones, professor of communication at the University of Illinois at Chicago

3 Electrical and Computer Engineering Background (continued)  95.7 million single adults in the United States*  Popularity of online friend/dating services Eharmony.com reports 10,000 to 15,000 new users every day, with more than 6,000 marriages to its credit. Friendster +19 million members  Forbes reports online-dating- service revenues topping $214 million in the first half of *Accoring to the U.S. Census Bureau 2004

4 Electrical and Computer Engineering Concept  There is a market gap People like PEDs People like friend/dating services Nothing on the market combining the two  Propose the Buddy Bug PED to facilitate social interaction For use primarily at bars, lounges, or any location where people gather Allow people to find others with similar interests Give knowledge of similar interests to allow people to start conversations Provide easy contact information exchange

5 Electrical and Computer Engineering Vision  A beeper-sized PED  At home You program interest groups and contact info into Buddy Bug Ex. Red Sox fan  At the bar You have your Buddy Bug clipped to belt Another Red Sox fan is in the bar Your Buddy Bug alerts you You look at the pattern showing on your Buddy Bug. You look around the bar for Buddy Bug with the same pattern Go start a conversation Exchange of contact information Red Sox Fan Buddy Bug

6 Electrical and Computer Engineering Design Challenges  Match identification How do I know I’m matched with someone?  Pattern synchronization What’s a pattern? How are they chosen?  Wireless communication  Small form-factor Embedded device Small battery

7 Electrical and Computer Engineering Design Alternatives  Locating Match GPS Visual Audible  Patterns  Notification Audible Visual Vibration  Mating/Programming Infrared Contacts  Communication Wi-Fi (IEEE ) Bluetooth (IEEE ) ISM Band OOK FSK FHSS

8 Electrical and Computer Engineering Design Alternatives  Locating Match GPS Visual Audible  Patterns  Notification Audible Visual Vibration  Mating/Programming Infrared Contacts  Communication Wi-Fi (IEEE ) Bluetooth (IEEE ) ISM Band OOK FSK FHSS

9 Electrical and Computer Engineering Design Alternatives  Locating Match GPS Visual Audible  Patterns  Notification Audible Visual Vibration  Mating/Programming Infrared Contacts  Communication Wi-Fi (IEEE ) Bluetooth (IEEE ) ISM Band OOK FSK FHSS

10 Electrical and Computer Engineering Design Alternatives  Locating Match GPS Visual Audible  Patterns  Notification Audible Visual Vibration  Mating/Programming ? Infrared ? Contacts  Communication Wi-Fi (IEEE ) Bluetooth (IEEE ) ISM Band OOK FSK FHSS

11 Electrical and Computer Engineering Design Alternatives  Locating Match GPS Visual Audible  Patterns  Notification Audible Visual Vibration  Mating/Programming ? Infrared ? Contacts  Communication Wi-Fi (IEEE ) Bluetooth (IEEE ) ISM Band ? OOK ? FSK ? FHSS

12 Electrical and Computer Engineering Matching Algorithm - Challenges  Publicizing yourself  Identifying others  Distributing group information  Matching group information  Generating unique patterns for groups  Requiring patterns in range to coincide

13 Electrical and Computer Engineering Matching Algorithms - Goals  Minimize RF activity Reduce battery drain Reduce transmitting collisions  Dynamic and distributed processes No centralized server  Solid and stable functionality Handle arbitrary situations and organizations Settle discrepancies in a timely manner  Minimize code footprint Leave ample room for flash storage

14 Electrical and Computer Engineering Matching Algorithms - Proposed  Static Matching Statically place patterns from PC onto Buddy Bug  Match and Propagate Propagate pattern changes along Buddy Bugs  Match and Average Iteratively converge changes among Buddy Bugs  All would use a similar initial packet to: Publicize your Buddy Bug Convey group and pattern information

15 Electrical and Computer Engineering Matching Algorithms - Simulation

16 Electrical and Computer Engineering Hardware: System Block Diagram

17 Electrical and Computer Engineering At the Core: Chipcon CC1010  System on a chip 8051 Microcontroller ISM-band RF Transceiver Persistent Flash Memory  Most major block level components combined into one package  Less PCB “real estate” Smaller form factor Simpler PCB design

18 Electrical and Computer Engineering CDR Deliverables  Design documentation and specifications  Several functional prototypes Enough to show validity of the design  PC Dock & Software Used for programming  Research results Justification for algorithms chosen

19 Electrical and Computer Engineering Proposed MDR Deliverables  Two bugs  Communication between bugs Wireless Wired  Displays LCD Print characters received from other bug LEDs Vary colors and blinking frequency

20 Electrical and Computer Engineering Comments / Questions?