1. ECE 477 Final Presentation Team 2  Spring 2010 Caleb Ayew-ew Josh Long Katie Schremser The Digi-Brush

2. Outline Project overviewProject overview Block diagramBlock diagram Design challengesDesign challenges Individual contributionsIndividual contributions Project demonstrationProject demonstration Questions / discussionQuestions / discussion

3. Project Overview Underlying motivation Crayola® Color Wonder Magic Light BrushCrayola® Color Wonder Magic Light Brush –Claims to be mess-free –Is not entirely mess-free The Digi-Brush is a device that allows the user to paint without making a mess User can select between 8 different colorsUser can select between 8 different colors Color is displayed on the tip of the brushColor is displayed on the tip of the brush User can select betweenUser can select between different brush thicknesses different brush thicknesses

4. Block Diagram

5. Design Challenges Interfacing between FPGA and other componentsInterfacing between FPGA and other components –SDRAM –SD Card Reader Programming components without a debuggerProgramming components without a debugger –LED Driver –FPGA Unreliable componentsUnreliable components

6. Individual Contributions Team Leader – Josh LongTeam Leader – Josh Long Team Member 2 – Katie SchremserTeam Member 2 – Katie Schremser Team Member 3 – Caleb Ayew-ewTeam Member 3 – Caleb Ayew-ew

7. Team Leader – Josh Long PCB DesignPCB Design Component SelectionComponent Selection Soldering of ComponentsSoldering of Components Packaging of the BasePackaging of the Base Aided in FPGA and Microcontroller testing and debuggingAided in FPGA and Microcontroller testing and debugging

8. Member 2 – Katie Schremser Microcontroller ProgrammingMicrocontroller Programming –Peripherals ATDATD SPISPI I2CI2C –Touch Panel algorithms –Filtering of Touch Panel return voltages Packaging of the BrushPackaging of the Brush

9. Member 3 – Caleb Ayew-ew FPGA ProgrammingFPGA Programming –VGA Protocol –Memory Management –SPI –Verilog

10. Project Demonstration 1.An ability to display images on the display board – demo demo 2.An ability to track the digital brush on the display - demo demo 3.An ability to mimic paintbrush stroke characteristics on the display board - demo demo 4.An ability to save the painted image on an SD Card 5.An ability to distinguish user’s color selection and display selected color before being painted color before being painted - demo - demodemo

11. Demo

12. Questions / Discussion