3. Overview  The project consists of a speech module device which allows for playback of messages. This module will then be incorporated into different devices for people with disabilities such as those who are visually impaired.  The challenge in this project is to create a quality, cost- effective device that can be easily made for assisting teachers and easily reproduced in learning situations by children and young adults.  We will not only create this device with the specs given, but also implement it in a device that will benefit society as a whole.

4. Project Schematics

5. Block Diagram

6. Microphone © 2005 Jameco Electronics

7. Speaker Output © 2005 Jameco Electronics

8. ISD1420 Chip © 2005 Winbond Electronics Corporation America

9. Speech Processing Module  Power Supply Test (Less vs More)  Microphone Inputs (Different types) with Oscilloscope  Following Signal through System  Speaker Output  Resistance, Capacitance Altering (changing and removing)

10. Device Addressing RecordingCall Address Record Message Button 1H (A0) After Calling Address Button 2H (A1)After Calling Address Option A (Static)  Pins A0-A5 are addresses which are referenced for storing data. Option B (Dynamic)  Data is stored and recalled based off of EOF Markers Example: Recording A0 (Call Address) Record Message Button 1LAfter A0 Pulse Button 2Pulse HAfter A0 Pulse Button NPulse H ((N-1))After A0 Pulse

11. Sweet Picaxe  Microprocessor (with Flash Memory)  Programmable in BASIC or by flow chart  Cheap

12. Picaxe Utilization ➢ Controller = Picaxe ➢ Use the Picaxe so that we can record and reference different things

13. Potential Problems ➢ System Design ➢ Time Management ➢ Design Level ➢ Conflicting Schedules ➢ Task Assignments ➢ Circuitry Elements ➢ Cost-Effective Product

14. Timeline

15. Up and Coming  Implement the Picaxe system.  Programming logic.  Assigning tasks.  Not too familiar with it.  Design and use a PC board.  Design with Express PCB.Express PCB  Solder circuit elements. (Without overheating delicate chips.)  Fabricate the casing.  Aesthetically pleasing.  Easy to use interface.  Apply the system to a device.

16. Special Thanks To The Archimedes Team Website: http://www2.hawaii.edu/~mbales/myfavorites/index3.htmlhttp://www2.hawaii.edu/~mbales/myfavorites/index3.html ©EERD 2006