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 Developing a finished product for production Will be marketed to tech savvy consumers

Non-Recurring Cost Parts214 Labor9,230* Fringe Benefits, % of Labor2,308 Subtotal11,752 Overhead, % of Matl, Labor & Fringe6,463 Total$18,215 *Based on four engineers working 12 weeks for 10 hours a week at a $40,000 a year salary.

Recurring Cost Parts Cost65 Assembly Labor6 Testing Labor8 Total Labor14 Fringe Benefits, % of Labor4 Subtotal83 Overhead, % of Matl, Labor & Fringe45 Subtotal, Input Costs128 Sales & Marketing Expense55 Warranty & Support Expense11 Subtotal, All Recurring Costs194

Cost Summary Recurring Cost194 Non-Recurring Cost Amortized over 10,000 Units2 Total Cost$196 Selling Price$220 Profit11%

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

Objectives (Cont.) 1.5 “ 5 “ 4.2 “ 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.

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

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

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

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

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

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

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?

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

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

Final Battery Life Predictions 16.9 hours w/o backlight

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

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

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

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

Project Timeline TaskStart Date Multiple User Programming October 29 Wireless Data Transmission October 29 GUI DesignNovember 5 Battery Life TestNovember 5 Final AssemblyNovember 19 Final PresentationDecember 5

Questions