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Wireless Automated News Display (W.A.N.D.)

Wireless Automated News Display (W.A.N.D.). Daniel Karnik, Eric Scott, David Thompson, Ted Wilcox. Overview. Project is a customizable news display Displays headlines, ticker symbols, sports scores Can be set for multiple users or channels Designed as a wireless, low power device

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Wireless Automated News Display (W.A.N.D.)

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  1. Wireless AutomatedNews Display (W.A.N.D.) Daniel Karnik, Eric Scott, David Thompson, Ted Wilcox

  2. Overview • Project is a customizable news display • Displays headlines, ticker symbols, sports scores • Can be set for multiple users or channels • Designed as a wireless, low power device • Developing a finished product for production • Will be marketed to tech savvy consumers

  3. Non-Recurring Cost *Based on four engineers working 12 weeks for 10 hours a week at a $40,000 a year salary.

  4. Recurring Cost

  5. Cost Summary

  6. Objectives • Range • About 10 Meters • Transmission Speed • Min. 10 KB/s • Battery Life • Multiple hours of continuous use on a single 9V battery

  7. Objectives (Cont.) • Small Size • Volume less than 35 inches cubed • Two channels • two users or two preferences • Simplicity • Software automatically downloads RSS feeds from websites and transmits the data to the W.A.N.D. 1.5 “ 5 “ 4.2 “

  8. Design Breakdown The Internet Internet Connection W.A.N.D. W.A.N.D. software WirelessUSB dongle 10 meter wireless transmission

  9. Hardware Components AWP24U WirelessUSB Dongle Cypress WirelessUSB LP Radio Integrated Cypress CYWM6935 WirelessUSB Module Contains Wireless USB LR Radio

  10. Hardware Components Crystalfontz CFAH2004A-YTI-JP LCD Uses standard HD44780 controller onboard. Cypress PSoCEval1 board Includes the CY8C29466 PSoC microcontroller (32KB Flash, 2KB SRAM)

  11. Receiver Components 3” 4” * To Approximate Scale and Location

  12. Battery Life Around 34mA with no LCD or wireless receiver attached.

  13. Battery Life Energizer datasheets indicate capacity around 600mAh for a 9V battery

  14. Battery Life • 600mAh / 34 mA = 17.7 hours of operation • Device is not designed to be operated continuously • What happens when we attach an LCD?

  15. Battery Life • Crystalfontz 20x4 LCD draws just 1.6mA • Optional backlight adds 280mA or 60mA (we ordered two types) • w/o backlight: 16.9 hours • w/ backlight: 1.93 or 6.3 hours

  16. Battery Life • How does the radio module affect battery life? • Infrequent operation – Check for updates every ~30 seconds • Average current is only ~50uA (negligible)

  17. Final Battery Life Predictions 16.9 hours w/o backlight

  18. WirelessUSB Basics • First developed in 2006 • Sends up to 50 meters at 1 Mbit/sec • Operates in 2.4 GHz frequency Range • Primarily Used for HID implementations

  19. WirelessUSB Comparison • Lower cost than competitors • Low power requirements • Seamless system integration • Works basically as if device was wired • Connection transparent to designer at OS level • No drivers needed • Works well in “noisy” environments • Lower data transmission rate than alternatives

  20. PC Software • C++ Programming Language • Components of Software • Feed Retrieval and Processing • Sending of Feeds to Device • User Interface Layer

  21. Software Flow Initialize Get Feeds On? yes Retrieve Feed Process Feed Write To File no End of File? yes no Reset Timer no yes Time? Wait for Time Out On? Send Feeds yes Send no

  22. Project Timeline

  23. Questions

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