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 Research and Documentation Dr J.W. Bruce Advisor Associate Professor

3. Problem Statement Solution Technical Design Constraints Practical Design Constraints Subsystem Testing System Test Goals for Senior Design II 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 Completely autonomous lighting Low price

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. User InterfaceThe SLB must have user interface buttons that allow for navigation through the songs on the USB.

7. The SLB must have a retail price of under $75.00 Superior performance in comparison to other low end products ML1-Ramsey Electronics Retail - $59.95 [1] Economic – Price

8. Health and Safety – UL Standards SLB will handle amperages up to 5 amps Any current above 20 mA can cause death by damage to brain tissue or interrupting the normal contractions of the heart.[2] SLB must not allow lethal amperages to be reached. The SLB will be interlocked to shut-down in the case of an over-voltage or over-amperage.

9. Lights Audio File SLB Music

10. USB Host MP3 Decoder Signal Processing Switching Device Interface Buttons

11. [3]

12. Microcontroller sends ‘E’ and VDIP1 returns ‘E’ Microcontroller sends ‘e’ and VDIP1 returns ‘e’ Synchronization Process Complete

14. Transfer Rate= 5 bytes = 31μs 161.9 Kbytes/s

15. [4]

16. JarsBit RateSample Rate 320 kb/s X 256 kb/s X 224 kb/s X 192 kb/s XX 160 kb/s XX 128 kb/s XX 112kb/sX X 96 kb/s XX 80 kb/s X 64 kb/s

18. 3.2 kHz continuous signal Audio signal “Boom Boom Pow”

19. Using a spectrum analyzer plug-in from the VS1011E Low 0 - 40 Hz 40 - 70 Hz 70 - 100 Hz 100 - 125 Hz 125 - 150 Hz Mid 150 - 500 Hz 500 - 650 Hz 650 - 850 Hz 850 - 1150 Hz 1150 - 1350 Hz High 1350 - 1700 Hz 1700 - 2200 Hz 2200 - 3500 Hz 3500 - 5000 Hz 5000 - 7000 Hz Tone Frequency Highest Intensity Correct Band Closest Intensity Lowest Intensity 5032yes 2410 7930yes 2411 12630yes 2410 20032yes 2110 31728yes 1810 50427yes* 259 80028yes 2212 127024yes* 2213 201634yes 229 320024yes 1610 508020yes 148 806314yes 106 1280014yes 104 2031914yes 100 * High intensities were in each of the bands surrounding the correct band as well

20. 3.3VDC 120VAC Input Fused 120VAC Output

21. 3.3VDC Driver Voltage Not Applied3.3VDC Driver Voltage Applied

22. Back Button Forward Button Play/Pause Button

23. Channel 1 is the audio output Channel 2 is the button output

24. Play/Pause button being pressed twice

26. Error Light Location Error State Error Light Output Sequence Empty USB Drive Solid Error Light Wrong File TypeBlink Error Light every 50ms (FAST) No USB DetectedBlink Error Light every 500ms (SLOW)

27. Song TitleArtistBit RateSample RateSound Quality Test ToneN/A12822kGood Test Tone N/A 12844kGood Test Tone N/A 12848kGood Test Tone N/A 12896kBad Beverley HillsWeezer12844.1kGood Used MeHinder16044.1kGood HopelessBreaking Benjamin19244.1kGood All Or NothingTheory of a Deadman22344.1kBad Life After YouDaughtry32044.1kBad 50 Hz tone800 Hz tone3200 Hz tone

29. Technical Constraint Status Audio QualityComplete Audio CompatibilityComplete SynchronizationComplete OutputComplete AutonomousComplete User Interface ButtonsComplete

30. Design PCB for Fabrication Design and Construct Enclosure Signal Filtering Tweaks

31. [1] “Ramsey Electronics, ML1,” October 7, 2009. [Online.] Available: http://www.ramseyelectronics.com/cgi-bin/commerce.exe?preadd=action&key=ML1C [2] “Electrical Safety.” [Online]. Available: http://www.pacificpower.net/Navigation/ Navigation4124.html [Accessed: September 12, 2009]. [3] Future Technology Devices International, Ltd., “Vinculum VNC1L Prototyping Module,” VDIP1 datasheet, 2006-2007. [4] “Breakout Board for VS1011 MP3,” September 29, 2009. [Online.] Available: http://www.sparkfun.com/commerce/images/products/00519-03-L.jpg.