ECE 477 Final Presentation

Team 03 - Spring 2013

Ryan Pawling Spencer Julian Josh Hunsberger Robert Harris

Outline

• Project Overview

• Block Diagram

• Design Challenges

• Individual Contributions

• Project Demonstration

• Questions and Discussion

Project Overview

• What is "Hackers of Catron"?o An electronic Settlers of Catan® board.

Settlers of Catan® is a resource gathering and trading board game in which players compete to build the largest economy.

• What we will improve upon?o The game is really fun, but it takes too long to

set up. This project shortens the setup process.

o This design makes resource gathering and spending automatic.

o Hackers of Catron simplifies the execution of Catan without adding more complexity.

Block Diagram

USB

llRaspberry

Pi

Web Server AVR32 UC3 B

Microcontroller

(8) Hall Effect

Sensors

Economy Control Logic

RGB LED Driver

Single Hall Effect Sensor

Game Control Code 7

Segment LED

Display Driver

Wifi Acces

s Point

(8) 7 Segs

5 sets (daisy-chained)

(3) RGB LEDs

7 sets (daisy-chained)

Hall18

2

3

8:1 MUX

18 Sets

Addr - 3

SPI

2

I2C

Load Enable

Seg 8

Dig 8

RGB 3

Hall

TWI

Design Challenges• Sense small game pieces at up to 145 specific

locationso Hall Effect sensors spaced properly on large

PCBo Magnetic pieceso Multiplexed signals

• Track and automate trading of resourceso Web application to be multiple device friendlyo Raspberry Pi to act as low-cost web server

• Display a randomly-generated game boardo Color of RGB LEDs denotes resource typeo Seven Segment displays denote rarities

• Create random numberso Random numbers generated by the Raspberry

Pi and microcontroller system clock

Design Challenges• Mapping game positions

o Relational static structure of all positions on the board and their adjacent positions, hexes, and ports

• Creating a development card decko Only allow 25 cards to be drawno Appropriately weighting the cards

• Web application speedo Original CGI based application incredibly slowo Updated to WSGI and significant amount of

Javascript

• Communicationo Communicate between microcontroller and

Raspberry Pi via I2Co Microcontroller acts as EEPROM slave to

Raspberry Pi

Joshua's Contributions• Suggested the original idea

• Hardwareo Built Early Prototypeso Estimated Power Requirementso Created Circuit Schematic

• Researched Patent Liability

• Plotted High Level Flowchart

• Microcontroller Programmingo Test Functionso Board Resource Generationo Dice Rollo Piece Placement Legalityo Longest Roado Raspberry Pi Communication

1

123

14

Spencer's Contributions• Suggested use of Raspberry Pi and Operating

Systemo Tested alternative boardso Tested alternative linux distributionso Set up raspberry pi for use

• Found and tested functions during microcontroller testing

• Assisted with flowchart creation and layout

• Designed and developed original web interfaceo HTML5 and CSS3 Frontendo Python 2.7 backend converted to Python 3

• Developed most of the backend of the version 2 web interfaceo Ported into skeleton structureo Assisted with front end design and

development

• Created parts of the packagingo 3D Printed hexagons

Robert's Contributions• Initial prototyping of LED drivers

• PCB Layouto Hand routed 20.5"x16" PCB with hundreds of

componentso Trace width calculations for extremely long

traces

• PCB Populationo Soldered many componentso Debugged and fixed errors in the PCB

• Package Construction

• Web applicationo Styling of web application user interfaceo Back end (Python) and front end (Javascript)

programmingo Porting of web application to "bottle"

framework

• Project video

Ryan's Contributions• Prototyping

• Packaging design considerations

• Test code written for all interfaces

• Populating PCB

• Packaging construction

• Flowcharts and game logic

• Microcontroller softwareo Low-level functionso Check for legal piece placemento Main game loopo Relational Map of all positions on the boardo Updating the board state

• Debugging Micro and Pi communication

• Project Video

Project Specific Success Criteria

• An ability to generate a random Catan board and represent the resources and their relative scarcity visually.

• An ability to detect the placement of pieces on the board and update game status accordingly.

• An ability to display game status (current scores, resources, etc.) via a web interface.

• An ability to enforce correct turn based gameplay via the board lighting and web interface.

• An ability to handle resource trading between players via the web interface.

Summary

• Hackers of Catron is an electronic version of Settlers of Catan®.

• Large PCB emulates physical boardo Hall Effect sensors detect pieceso RGB LEDs and seven segment displays show

generated game board

• Communication between Raspberry Pi and Microcontrollero Uses I2C for communicationo Microcontroller acts as EEPROM Slave to

Raspberry Pi

• Raspberry Pi hosts web server and acts as Wi-Fi Access Pointo Web application allows players to see/use hand

and score

• All success criteria met