PROJECT NOMADTeam Members: Jay Stenmark – Team Leader

– USB Design

David Graham – FM Receiver

– USB Software

– Webpage

Tim Poole – Packaging

Aimee Imparato – USB Design

– DirectX

Advisor:

Dr. James Harden

Our Design

A portable, single-cable, USB design that allows digital playing

and recording of FM radio on a PC

Overview

FM Problems

• Designed three different milled boards

• Could not get assistance from Philips

• Using hand entered control data

Last Semester

FM Current Solutions

• Fourth revision – Professionally Made

• Using a commercial board as eval. board

• Created Assembly language parallel port control program

This Semester

FM Current Status

FM board receives and demodulates radio signals for a search function within the oscillator range.

Future Tasks

• Correctly Tuning local oscillators

• Verifying proper tuning range

• Evaluate need for EMI shielding

USB Problems

• Only one board was milled and populated

• Computer Recognition of an audio device was inconsistent

• I2C EEPROM unable to be programmed

Last Semester

USB Current Solutions

• New board made and professionally printed

• Completely new test plan created

• Board is planned to have at least one more revision

This Semester

USB Current Status

The USB board is being recognized by the PC consistently.

I2C EEPROM needed to store the UDA1325 configuration map can successfully be programmed. Creating a proper configuration map that has all the initial settings is underway.

Future Tasks

• Complete Testing

• Programming EEPROM

• Sending command data to UDA1325

Software - Functions

• Tune to station

• Play audio signal

• Record audio signal to hard disk

• DirectX parallel with Windows API

• Researching DirectX

• Can read and write to USB device via Windows API

Software – Current Status

Packaging

• PCBs with surface-mount technology

• Preliminary exterior packaging is being researched

Demonstration

Questions