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Talkie Board Design Review

Talkie Board Design Review. Feb 19, 2008 ARMS 1209. Introduction. Project Leader Ross Howard – Sophomore, ECE Project Member Matt Miner – Junior, ECE Amir Soofi – Junior, ECE. Project History. Origins of project Talkie Board began in Fall 2005

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Talkie Board Design Review

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  1. Talkie Board Design Review Feb 19, 2008 ARMS 1209

  2. Introduction • Project Leader • Ross Howard – Sophomore, ECE • Project Member • Matt Miner – Junior, ECE • Amir Soofi – Junior, ECE

  3. Project History • Origins of project • Talkie Board began in Fall 2005 • GLASS approached the team with a desire for an improved version of Take n’ Talk

  4. Community Need • GLASS instructors often utilize communication aids when working with students. • Cards representing different words are given by the student to the instructor to communicate. • Take n’ Talk allows for 4 messages to be stored and are tied to specific locations.

  5. Community Need • Take n’ Talk records sounds to locations, not objects, which can lead to misunderstandings • Addressing the need will: • Allow GLASS instructors to communicate more effectively with students • Increase the abilities of GLASS students, allowing them to live more fulfilling lives

  6. Goals of the Project • Talkie Board will provide a customizable communication aid that will allow students to communicate through the use of pictorial representations, not specific locations • Talkie Board will not help students to physically speak on their own, but will provide a means to communicate through pre-recorded messages

  7. Goals of the project • Success Criteria: • This project must allow for messages to be tied to cards, not locations, and cost at most as much as currently used device • Deliverables: • Talkie Board device • 15 customizable cards • User manual • Detailed construction plans • Detailed maintenance requirements

  8. Project Specifications

  9. Project Specifications

  10. Functional Decomposition • Card Identification: • Identify specific cards • Identify when cards placed or removed • User Interface • Present cards in viewable manner • Controls accessible to teacher, cards to student • Mode Selection: • Change between record/play, put on/take off, power on/off • Sound System: • Record/play messages • Access messages dynamically

  11. Systems Overview Tlkie Board Card Bay 1 Card Bay 2 Card Bay 3 Card Bay 4 Optical Card Reader Bay Switches Memory Address Circuitry Speaker Sound Chip Micro- controller Mode Selection Microphone

  12. Design Overview • The device will work by accessing prerecorded messages based on card placed on device • Each card will have a 4 bit number to access specific memory address • 4 bit number will be read using optical sensor • Recorded messages will be related to number, not to position

  13. Student User Interaction Microswitch Changeable card Base Clear Material Photocell *Only one of four sections shown

  14. Operational Overview

  15. Design Overview Topics • Card Identification • Detailed Design and Development • User Interface • Specification Development • Mode Selection • Conceptual Design • Sound System • Conceptual Design

  16. Design Overview: Card Identification Card 1 LED Array Bay 1 Photosensor Array Bay 1 Memory Address Circuitry Switch 1 Card 2 LED Array Bay 2 Photosensor Array Bay 2 Switch 2 Card 3 LED Array Bay 3 Photosensor Array Bay 3 Microcontroller Switch 3 Card 4 LED Array Bay 4 Photosensor Array Bay 4 Switch 4

  17. Design Overview: Card Identification

  18. Design Overview: Card Identification

  19. Design Overview: User Interface • This includes the casing that houses all the electrical components, the front panel on which the cards rest and the cards. This also includes the four buttons the teacher user is responsible for operating

  20. Design Overview: User Interface

  21. Design Overview: Mode Selection On/Off Microcontroller Sound Chip Record/Play Record Enable Place/Take Away Mode Selection

  22. Design Overview: Mode Selection

  23. Design Overview: Mode Selection

  24. Design Overview: Sound System • The soundchip is the part of the circuit that stores and plays the message. • The inputs are the addresses from the card identification and the three bits that control the soundchip operations. • The only output the soundchip has is the audible recorded message.

  25. Design Overview: Sound System

  26. Design Overview: Sound System Microphone Microcontroller Sound Chip Mode Selection Speaker Memory Address Circuitry

  27. Design Overview: Sound System • Proposed Solutions • Sound chip that includes following features • onboard memory for storing audio • can both record and play messages • only plays message, then disables sound output • Decoder with EEPROM • Audio files are stored in addresses in the EEPROM • Decoder will access memory locations and retrieve data

  28. Preliminary Budget

  29. Future Plans • Card Identification • Finalize Detailed Design • Prototype Development • User Interface • Finalize Detailed Design • Prototype Development • Microcontroler/Logic • Specification Development • Preliminary Detailed Design • Sound System • Specification Development • Preliminary Detailed Design

  30. Future Plans • Projected Deliver Time • Fall 2009

  31. Questions?

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