Spalding Gymnastics Scoreboard Advisor: Zhao Zhang Team Members: Chris Chambers Christopher Reis Alex Dean Luke Breuer Ali Khan

Problem Statements Client needs a more sufficient way to display gymnasts scores. Current method is a manual score flasher. Target consumers are athletic venues who hold gymnastic events. Display must be visible to athletes, judges and fans.

Functional Requirements Able to read from 100’ – 200’ away Easy transportation (Size matters) Powered by external 120 VAC source Controlled by computer or tablet Wireless communication from computer to message board

OLD 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

NEW Concept Sketch Main Ideas Small enough to transport Displays 5 digits on two sides Uses 7 segment displays with floating decimal. Simple repeatable design

7 Segment Displays 8 inches tall 4 inches wide Include a decimal with every character Common Anode 20V at 20mA per individual segment

Micro-controller Unit ATMega328 chip Arduino Bootloader Interface WiFi module SD Card 7-seg Displays

User Interface Simple Data Input via an HTTP webpage

Power System 120 VAC to 24 VDC 100 Watt Supply 24 VDC to 20 VDC 24 VDC to 5 VDC Rhino PSS Series Power Supply

Functional Breakdown 24VDC Power Supply Main PCB µC WiFi Segment Connectors Seven Segment Display (Back) Seven Segment Display (Front) Voltage Regulators 120VAC Case Shift Registers

Technical Challenges Changes in requirements from client Component selection Design for manufacturability Development of Web Interface with ATMega328 controller and separate WiFi shield Sturdy case design that allows proper venting while keeping internal circuitry safe from damage

Structure

Features Vents in the sides to cool the board. Power plug in the bottom of box. The components will be mounted down the center to mitigate heat and make for ease of installation. The box will consist of a metal frame with 2 Plexiglas faces.

Schedule

Test Plan 1.Test seven segment displays with power supplies to ensure performance 2.Test board assembly with seven segment displays 3.Test coding and shift register functionality without WiFi connection 4.Test WiFi system with User Input Device (laptop or tablet) 5.Test RF performance in various environments 6.Test User Interface and WiFi input capabilities to MCU 7.Test Complete System in Target Venue 8.Perform summary EOS testing 9.Perform user application testing with product documentation P F

Project Concept Create a simple and manufacturable design for a scoring display that is unobtrusive, but displays needed competition information to fans and athletes.

Questions?