Raymond Welch Forrest Holub Sean Brooks Advisor: Dr. Gayatri Mehta

 Raymond Welch  Display code and testing, poster, progress presentation, final report and presentation  Forrest Holub  Proposal, research, parts ordering, progress report, wireless implementation, construction  Sean Brooks  Proposal, research, progress report, shopping runs, construction

 This project is a prototype flexible display attached to a jacket that receives text wirelessly from a nearby computer and outputs it to an LED display matrix by multiplexing the text data through a series of 8-bit shift registers.

Display Component 8-bit Shift Registers LED Matrix units

Control Component Wireless Component To Display

 Arduino Code  3 functions  Get Input from Xbee ▪ Trim to display width  Convert input to display pixels ▪ Look up characters in table  Refresh display ▪ Controls clock signals and row updates ▪ Synchronized

 Construction took longer and got started later than anticipated  Ended up ordering parts later because of broken components

 Attached LED units to jacket sleeve  Soldered shift registers to PCB  Sewed bus lines from display to control with conductive thread  Attached Lilypad and Xbee with thread  Connected PCB and LED units  Attached batteries

 Single LED unit and single shift register  Added more units and registers  Changed from hardcoded input to dynamic strings  Added wireless capability  Polished timing issues and finalized wiring  Tested connectivity and voltage on jacket

 Working display  Working wireless  Ran out of time embedding on jacket

 No eInk or other integrated flexible display screen available  Individual LEDs too much labor  5x7 matrix units more manageable  Timing issues  Too much wiring  Thread doesn’t connect to pins easily  Take too much time to complete

 This project  Detatchable components for washability  More efficient screen  Better wireless  Applications  Doctors  Soldiers  Astronauts

 We used the IEEE standard which specifies the media access control for low- rate wireless personal area networks (LR- WPANs) using the XBee Series 1 transceiver.

 User safety  Sharp edges  Exposed wires/thread  Possible heat dissipation  Waterproofing

 Atluri Sri Harsha  Dr. Gayatri Mehta  Alex Lin  Dr. Murali Varanasi  Kaushani Dasgupta  UNT Department of Electrical Engineering We would like to thank:

 Helpful XBee communication examples:  Faludi, Robert ( ). Building Wireless Sensor Networks: with ZigBee, XBee, Arduino, and Processing (Kindle Locations ). OReilly Media - A. Kindle Edition.  Arizona State University Page on Flexible Displays:  OLED Info Aggregator site:  2005 Research Publication about flexible displays: 2.pdfhttp:// 2.pdf  This is the kind of display we had in mind:  Post from the Arduino forum concerning flexible display availability:  Video with a similar device:  A construction kit for electronic textile:  A paper about Lilypads:  Arduino LilyPad:  Arduino code reference:  Video demonstrating Lilypads:  LED unit Datasheet:  Video about shift registers:  Most of our components came from here:  And we used a lot of this: