Download - 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
• Prototype is a wired device– Has all desired features except wireless capability– Will be production ready as soon as wireless
added
• Will be marketed to tech savvy consumers
Objectives
Technical SpecificationsAspect of Design Desired Specifications Actual Specifications
Physical Size 3” x 4.5” x 2” 4.175” x 5” x 1.5”
Weight 1 lb 1 lb
Wireless Range 30 ft. indoors N/A
Battery Life 24 hours 6.3 to 16.9 hours
Battery Type 1x 9V 1x 9V
Display Size 20 x 4 characters, backlit 20 x 4 characters, backlit
Users Supported 2 2
RSS Update Time 2 minutes User defined
Design Breakdown
RSS Feeds
Internet Connection
Serial Connection
PC Software
• MS Visual C# Programming Language
• Components of Software– Feed Retrieval and HTML Generation– Data Processing– Sending of Feeds to Device– User Interface Layer
Software Flow
TransmitUser 2
TransmitUser 1
EnableTransmit
DisableTransmit
DownloadUser 2
DownloadUser 1
Save Changes
Allow Changes
DisableTransmit/Download
ConfigurationMode
EnableTransmit/Download
Acquisition?
Sleep
Sleep
Transmit
Sleep
Download
On?On?
yes
yesyes
nono
no
Hardware Components
Crystalfontz CFAH2004A-YTI-JP LCDUses standard HD44780 controller onboard. 20x4 characters
Cypress PSoCEval1 boardIncludes the CY8C29466 PSoC microcontroller (32KB Flash, 2KB SRAM)
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 60mA
• w/o backlight: 16.9 hours
• w/ backlight: 6.3 hours
The Product
Backlit LCD to display news.
Indicator LEDs for power and receiving data
Backlight On/Off pushbutton
User select pushbutton
On/Off Switch
Serial Connector
Non-Recurring Cost
Parts 111
Labor 9,230*
Fringe Benefits, % of Labor 2,308
Subtotal 11,649
Overhead, % of Matl, Labor & Fringe 6,407
Total $18,055
*Based on four engineers working 12 weeks for 10 hours a week at a $40,000 a year salary.
Cost Summary
Recurring Cost 194
Non-Recurring Cost Amortized over 10,000 Units 2
Total Cost $196
Selling Price $220
Profit 11.1%
Project Timeline
TaskProjected Completi
on
Actual Completi
onWired Data
TransmissionOctober 4 October 25
Wireless Data Transmission
October 17 Pending
Internet DataRetrieval
October 4 October 31
GUI Design November 8November
26
Final AssemblyNovember
19November
29
Why Serial Instead of Wireless?
• Incompatible USB dongles and receiver modules shipped from Artaflex
• Little to no documentation using WirelessUSB w/ PSOCEval1
• Nearly impossible to debug a wireless transmitter
• Serial is a simple backup plan
Future Improvements
• Correct USB dongles and receiver modules now received from Artaflex
• Implementation of wireless component should only require a few hours work
• Add Graphical User Interface features
Questions