Propeller Display Final Project Presentation Ragnar marsson & - PowerPoint PPT Presentation

Propeller Display Final Project Presentation Ragnar Ómarsson & Aníta Björk Hlynsdóttir Department of Science and Engineering (TVD) Reykjavík University 29. November 2012

Introduction This is a different way to display messages. It is called a propeller display because it has one array of led that spins on a propeller and uses persistence of vision (POV) to display the message. This might get more attention than a regular display. Ragnar Ómarsson & Aníta Björk Hlynsdóttir, RU Propeller Display, Final Project Presentation 2/16

Background on POV Persistance of vision is a sort of deception of the eye The concept used for movies shot on film Also the basis for old cartoons Figure: Example of a film: [1] Ragnar Ómarsson & Aníta Björk Hlynsdóttir, RU Propeller Display, Final Project Presentation 3/16

Usage Mostly used for fun by hobbyists Can be used to display advertisements Suitable for home usage Figure: Example of a POV device: [2] Ragnar Ómarsson & Aníta Björk Hlynsdóttir, RU Propeller Display, Final Project Presentation 4/16

Design: Overview Problem solving Component testing Motors Sensors Prototyping Final Build Figure: The fan motor Figure: The optical sensor Ragnar Ómarsson & Aníta Björk Hlynsdóttir, RU Propeller Display, Final Project Presentation 5/16

Bill of Materials: Prototype The prototype was built mostly out of leftover material lying around the electronics lab and the machine shop. Fan Arduino Uno Optical sensor Vero prototyping board LED, Resistors & Wires Sheet metal POM "Plastic" Plywood Ragnar Ómarsson & Aníta Björk Hlynsdóttir, RU Propeller Display, Final Project Presentation 6/16

Design: Prototype Figure: The prototype Figure: Prototype testing Ragnar Ómarsson & Aníta Björk Hlynsdóttir, RU Propeller Display, Final Project Presentation 7/16

Final Build: issues The prototype had some issues that we would have to address in our final build. Main issues to address: Work on propeller PCB board Reduce weight Balance the propeller Clean up design Add real time clock (just for fun) Ragnar Ómarsson & Aníta Björk Hlynsdóttir, RU Propeller Display, Final Project Presentation 8/16

Final Build: circuit design The circuit schematic was done in Eagle. Figure: The Propeller Display Schematic Ragnar Ómarsson & Aníta Björk Hlynsdóttir, RU Propeller Display, Final Project Presentation 9/16

Final Build: design The Propeller Display main design components: Figure: Case for front view design Figure: Case for top view design Figure: PCB layout for front Figure: PCB layout for top view view design design Ragnar Ómarsson & Aníta Björk Hlynsdóttir, RU Propeller Display, Final Project Presentation 10/16

Bill of Materials: Final Build The final build was done with the following materials Fan Atmega328 microprocessor Real Time Clock (DC 1307) Optical sensor PCB board LED, Resistors & Wires 9V battery case MDF wood misc. screws, paint, etc. Ragnar Ómarsson & Aníta Björk Hlynsdóttir, RU Propeller Display, Final Project Presentation 11/16

Final Build: The result Figure: The product 2 (front Figure: The product 1 (top view) view) Ragnar Ómarsson & Aníta Björk Hlynsdóttir, RU Propeller Display, Final Project Presentation 12/16

Software The devices can be programmed with all sorts of displays. To make the programming easier for us and also to make the main functions more easily readable an Arduino Library was written. The Arduino Library Alphabet contains: Function that specifies which LEDs to use Function that specifies the time for each pixel as well as the time between characters Functions that can write out the characters ’A-Z’, ’0-9’, ’:’, ’/’ and ’-’ Ragnar Ómarsson & Aníta Björk Hlynsdóttir, RU Propeller Display, Final Project Presentation 13/16

Future Work This is one of those projects that never end. New ideas are constantly surfacing. Our next steps in this project would be: Adding XBEE or bluetooth module to enable wireless communication with the display Doing additional programming work Ragnar Ómarsson & Aníta Björk Hlynsdóttir, RU Propeller Display, Final Project Presentation 14/16

References [1] Example of a film, Available online at: http://www.sdkerr.com/animation/biffLogo/muybridgeFilmStrip2.jpg [2] Figure of POV device, Available online at: http://www.jeffreythompson.org/blog/wp- content/uploads/2012/04/Unknown3dPersistenceOfVisionProject M akerFia Ragnar Ómarsson & Aníta Björk Hlynsdóttir, RU Propeller Display, Final Project Presentation 15/16

Questions and demonstration Thank you for your attention, Aníta & Ragnar Ragnar Ómarsson & Aníta Björk Hlynsdóttir, RU Propeller Display, Final Project Presentation 16/16