1. Team 5 – Silver Snakes Design Review
Silver Snake Speaker System
March 7, 2012

2. General System Block Diagram

3. Schematic

4. PIC Flowchart

5. Block diagram of Ian’s subsystem
Switches activate the PIC which then forwards the command to the LCD module
The driver takes the commands from the PIC and sends it to the display which then outputs it through the screen
If wrong command occurs it can either be visualize by the incorrect display or no display at all

6. Program LCD display with PIC24
PIC to interface internal driver on LCD module
Driver forwards commands to the display
Operate the LCD display with switches
First switch first activation will pause display to selected category, then second activation outputs desired recording
Second switch activation will exit any unwanted previous selections
Interchange category pictures by allowing user to import and store into PIC memory
Can be personal images, clip art, or even from the Internet

7. Block Diagram of Matt’s Subsystem
The PIC24E reads the audio files from the flash drive
The PIC sends audio files to the VS1033 to be decoded and converted to analog
The analog signals are played through the speaker

8. Flow Diagram of Jeff’s Subsystem

11. Safety Ensure that the screen does not cause seizers
Set a wait timer of five seconds before displaying the next category to avoid repetitive flashing
Display pictures not videos to avoid rapid movement
Set the brightness to a lower level to evade blinding lights
Keep the total weight to a range under a few pounds
Allow user to rest the system on his/her body
Avoid damages/malfunction when dropped from a height of a yard or more