ECE 477 Digital Systems Senior Design Project Fall 2007
Homework 2: Design Project Proposal
Due: Friday, August 31, at NOON
Team Code Name: µ(sic) Group No. 5
Team Members (#1 is Team Leader):
#1: Wes Allen Areas of Expertise: Analog RF & Hardware
#2: Josh Speciale Areas of Expertise: Signals & Documentation
#3: Chris Poluski Areas of Expertise: Software & Packaging
#4: Dave Thomas Areas of Expertise: Software & Verification
Project Abstract:
Our project will be a wireless home media solution. It will comprise of a base station and a portable media drive. Media files stored on the drives can be streamed to the base station, where the media is output to a line out. The base station will be capable of detecting all compatible wireless drives within range and utilize media from selected drives.
Design/Functionality Overview:
Our project might be better described by communicating our vision for the product. It could simply perform the task of playing your favorite music when you walk in the door. On a larger scale, if the system were to become ubiquitous, we envision parties where the music playing is being shuffled from everyone’s pocket drives, even as people come and go from the scene.
Our project will involve two embedded systems, the base station and the portable media drive. Audio files in MP3 format will be stored on the portable memory drive on SD flash memory. The files will be stored utilizing a FAT16 file system. The media drive and the base station will both be equipped with Bluetooth transceivers. The base station will feature an interface which will allow the user to view media on available drives and select a song to be transferred to the base station. The media drive will transmit the entire compressed audio file which will then be processed by a MP3 decoder and provided to a stereo jack. While one song is playing, another song can be selected to play or the device may be put in a random play order. The base station will be able to store a cache of the upcoming 2 or 3 songs.
We anticipate that the cost of our project will remain under $1000. Major parts that will need to be included in our project include Bluetooth transceivers (~$150), an MP3 decoder (~$20), SD flash memory (~$40), a four-line LCD (~$80), and a lithium-ion battery (~$15). Wes will be able to contribute to the project by doing layout and schematic work on the circuits as well as manufacturing and debugging of hardware. Chris will contribute to the project by focusing on packaging and developing the software. Dave will also contribute to software development and perform system verification. Josh will contribute as well to schematic design and provide focus on project documentation efforts.
Project-Specific Success Criteria:
1. An ability to translate and output a digital audio file to a standard stereo jack.
2. An ability to store and retrieve files electronically.
3. An ability to wirelessly transmit data from the handheld device to the base station.
4. An ability to wirelessly detect handheld devices from the base station.
5. An ability to display pertinent information on the base station.
Block Diagram:
Division of Labor:
Design Component Homework / Professional Component Homework4-Packaging Design and Specs / Chris / 3-Design Constraint Analysis/Parts List / Josh
5-Hardware Narrative and Prelim Schematic / Josh / 10-Patent Liability Analysis / Chris
6-PCB Narrative and Prelim Layout / Wes / 11-Reliability and Safety Analysis / Dave
9-Software Design Narrative / Dave / 12-Social/Political/Environmental Analysis / Wes