SPALDING GYMNASTICS SCOREBOARD Advisor Zhao Zhang Team Members

SPALDING GYMNASTICS SCOREBOARD Advisor: Zhao Zhang Team Members: Chris Chambers Christopher Reis Alex Dean Luke Breuer Client: Spalding Advisor: Zhao Zhang Team:

PROBLEM STATEMENTS: • Client needs a more sufficient way to display multiple event scores. • The target consumers are athletic venues who hold gymnastic events. • Adaptable to other indoor events.

FUNCTIONAL REQUIREMENTS • Able to be read from 100’- 200’ away • Easy transportation (Size matters) • Powered by external 120 VAC source (General wall outlet) • Controlled by computer • Wireless communication from computer to message board (Wi. Fi) • Message board relatively insulated from elements in indoor facilities (Humidity)

CONCEPT SKETCH Main Ideas • Small enough to transport • Displays four different event names on the left • Scrolls through athlete names and scores for each event on the right

CONCEPT OF OPERATION

SYSTEM DESCRIPTION

USER INTERFACE HTML Website Reasons: 1. The IC we are using will include a USB port for a Wi. Fi dongle 2. Allows score reports to be accessed via handheld device (If you can connect to the internet) 3. Allows user to use any computer to program the scoreboard

MICRO-CONTROLLER UNIT Beagle Bone Reasons: 1. Embedded Linux (Angstrom Distro) 2. Interfaces with LED Drivers 3. Acts as Ad-Hoc router/HTML Server 4. Enables complex code to be abstracted (USB, TCP/IP, etc)

LED CIRCUIT MATRIX Reasons: 1. Reduction of GPI/O pins 2. Persistence of vision 3. Matrix operation 4. Reduction of power consumption 5. Reduction of discrete components

PCB SCHEMATIC

PCB LAYOUT

LED OPTIONS • Four options • Three Red options • One RG option • Vary in luminosity from 54220 milli-candela • 1206 Surface Mount packaging (606 for RG LED)

POWER SYSTEM Buck converter Reasons: 1. Allows 120 VAC Input 2. Convert Down to 12 VDC to power LED’s 3. Use Linear Dropout Regulator to convert to 5 VDC to operate Beagle. Bone and Driver logic.

FUNCTIONAL BREAKDOWN

NON-FUNCTIONAL REQUIREMENTS • Powered by a battery source • Built to withstand outdoor weather conditions • Ability to be mounted on stands • Ability to be integrated with other boards

WORK PLAN Phase 1 – Small scale testing and proof of concept design – Power consumption analysis Phase 2 – Large scale hardware layout and design – Drafting of external components Phase 3 – Prototyping and assembly of components Phase 4 – Extensive testing and analysis of prototype Phase 5 – Report on final results and correction of errors

POSSIBLE DEVELOPMENT ISSUES Problem 1 – Programming in HTML – Setting up router Problem 2 – Code to interface with LED Drivers Problem 3 – Developing the mounting system Problem 4 – Time constraint on adding in nonfunctional requirements Problem 5 – Network Security

MITIGATION PLAN HTML/Router – Work with advisor (Dr. Zhang) LED Drivers – Prototype early in January Mounting mounting – Develop plan with customer to provide system Time Constraint–Set realistic time goals, invest in early development work

FACILITY VISIT • Spalding/AAI Manufacturing Facility (Jefferson, IA) • Point of Contact: Norm Robbins • Onsite visit with client’s team • Tour of assembly lines • Gained familiarity with Spaldings manufacturing capability • Discussion of rotary forming capability