IEEE Project 2010 UW-Madison Student Chapter USB-Powered LED Color Organ Meeting 1

Agenda Introductions Meeting Schedule Design Introduction/Overview Eagle Tutorial Assignment

Meeting Schedule February 15, 18 Introduction, Eagle Tutorial Assignment March 1, 4 Layout Review, Eagle Q&A, Start Layout Individual Meetings (Weeks of March 15, 22) Board Layout Review, Make PCB Order Week of April Soldering Practice, Board Assembly April 28 (6:00pm), 31 (3:30pm) Board Assembly, Test, and Debug

Design Introduction The color organ operates from USB power. You can choose which USB connector to have on your board (A, B, or mini-B) Eight RGB LEDs are controlled by a microcontroller A 3.5mm stereo jack provides the audio input connection An optional USB UART allows the host computer to communicate with the microprocessor

Design Overview

Initial Eagle Schematic

Initial Eagle Layout

Eagle Assignment You’re welcome to work by yourself or with someone else – it’s your call Before the next meeting Download Eagle 5.7 from Cadsoft Complete the SparkFun tutorials Also learn about and experiment with  Create and name polygons  Turn thermals on and off Don’t worry about footprints.

Until we meet again… EAGLE installs PDF manuals and a confusing tutorial in the doc subdirectory Any questions? Look for materials at

USB Connectors

USB UART

Switches

Microcontroller

Audio Input

LED Array and Drivers