2. William Weeks Electrical Engineering Team Leader Hardware USB Host Research and Documentation Jesse Killough Electrical Engineering USB Host MP3 Decoder Research and Documentation Mark Williams Electrical Engineering Signal Processing Hardware Support Research and Documentation

3. Problem Statement Solution Technical Design Constraints Practical Design Constraints Approach and Tradeoffs Timeline Progress References

4. Current synchronized lighting devices are either expensive, or low quality There is a need for an inexpensive device that performs at a high quality

5. A standalone device that can extract an.mp3 file from a USB flash drive Digital filtering Low price Completely autonomous lighting

6. ConstraintDescription SynchronizationSynchronization between music and lights must be less than 100 milliseconds. Audio QualityThe SLB must play music at a sample rate of at least 44.1 kHz and 128 Kbit/s bit rate. Audio CompatibilityThe SLB must play.mp3 file format songs. OutputIt must be capable of powering at least three receptacles with a 5A current draw per receptacle. AutonomousThe SLB must be a pre-programmed standalone device that plays songs from a USB flash drive.

7. Economic – Price

8. Audio Decoder Micro-Controller USB Host Lights Audio Decoder

9. USB Host MP3 Decoder Microcontroller Switching Device Signal Filtering

10. InterfaceUSB Certified User- Friendly Price VDIP1FIFO, SPI, UART Yes $24.50 Maxim Max3421E SPINoYes$38.00 [1][2]

11. [3] [4] [5] User-friendlyBreakout Board Spectrum Analyzer Plug-in Price VS1011EYes $19.95 VS1002Yes No$19.95 STA013No $16.00

12. PIC24

13. Size Issue KnowledgeSwitching Speed Issue NoiseHeat Sink Required Price Electromechanical Relay NoYesNoYesNo$2.50 Solid State RelayNoYesNo $11.60 TriacNo Yes$7.50 [6]

14. Relay or Triac? Triac, So….. What is a Triac? MOC3011-M TRIAC Driver Q6025P5 TRIAC Test Circuit [8] [7] [8]

15. 3.3VDC 120VAC Input Fused 120VAC Output

16. 3.3VDC Driver Voltage Not Applied3.3VDC Driver Voltage Applied

17. AugustSeptemberOctoberNovember Approach Decisions Hardware Design Filtering Programming Testing

18. Populated Board Built and Tested Triac Unit Communication between the USB host and PIC Web Site Complete and Regularly Updated

19. [1] “UTL-001,” September 29, 2009. [Online.] Available: http://www.hdl.co.jp/UTL/UTL-001. [2] Future Technology Devices International, Ltd., “Vinculum VNC1L Prototyping Module,” VDIP1 datasheet, 2006-2007. [3] “Breakout Board for VS1011E-L MP3,” September 28, 2009. [Online.] Available: http://www.sparkfun.com/commerce/images/products/08820-03-L.jpg. [4] “Breakout Board for VS1002 MP3,” September 29, 2009. [Online.] Available: http://www.sparkfun.com/commerce/images/products/00519-03-L.jpg. [5] “STA013 Datasheet,” September 28, 2009. [Online.] Available: http://www.st.com/stonline/books/pdf/docs/6399.pdf. [6] “Solid State Relays,” September 30, 2009. [Online.] Available: http://www.mouser.com/ProductDetail/Omron-Electronics/G3M-205PL- DC12/?qs=sGAEpiMZZMtHD6BhCPGf2pzm/lBpqtlmT%252bYerubOsYw%3d. [7] “Triacs,” September 30, 2009. [Online.] Available: http://www.littelfuse.com/data/en/Data_Sheets/E2Triac.pdf. [8] “MOC3011M,” September 30, 2009. [Online.] Available: http://www.fairchildsemi.com/ds/MO/MOC3011M.pdf.