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The AwesomO mp3

The AwesomO mp3. “The Swiss Army Knife of mp3 Players”. Preliminary Design Review. The AwesomO Corporation:. Jason Taylor. Main Goal. Our main goal is to build a fully functional mp3 player that not only plays music, but also includes features not seen on current mp3 players. .

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The AwesomO mp3

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  1. The AwesomO mp3 “The Swiss Army Knife of mp3 Players” Preliminary Design Review The AwesomO Corporation: JasonTaylor

  2. Main Goal • Our main goal is to build a fully functional mp3 player that not only plays music, but also includes features not seen on current mp3 players.

  3. Audio Playback Capabilities Mp3 Decoding Headphone Port User Interface Buttons Play & Stop Next Song & Previous Song On/Off Switch Multi-Function Switch Flashlight Button Volume Control LCD Display Display Song & Artist Information Display Song Clock Compact Flash Storage USB 2.0 Interface File Transfer Interface between player and PC Primary Objectives

  4. Battery Power Possibly Rechargeable High-Intensity LED Flashlight Digital Thermometer Display Temp on LCD Implement FPGA Simplifies Logic Design Process Easily Modified for Debugging Mp3 Digital Voice Recording Encode mp3 Files From Microphone Input Touch Screen Interface on LCD to Perform Button Functions (i.e. Play) FM Transmitter Output Music to an FM Radio Frequency Secondary Objectives

  5. Basic Hardware Diagram PIC Processor MP3 Encoder Decoder Compact Flash DAC RAM LED FM Transmitter User Interface Audio Out EEPROM I2C SPI Liquid Crystal Display (LCD) w/ Controller Module ADC Temperature Sensor Audio In

  6. PRIMARY HARDWARE SUBSYSTEMS

  7. 8-Bit MicrocontrollerPIC18LF2550 Key Features: • Internal Flash Memory – 32kb program memory/ 2kb RAM • USB 2.0 Interface • 10 Channel ADC • 22 In/Out Data Channels (3 Ports) • I2C / 3-wire SPI/ EUSART Serial Port Interfaces • C compiler optimized • 2-Pin In Circuit Serial Programmable • Ideal for low power applications

  8. USB 2.0 Interface • Will allow device to interface with a PC for downloading files to the CF card at high speeds • Data rate of 12Mb/s • Interface built into PIC

  9. Mp3 Decoder/EncoderSTA015 • Decodes mp3 files into stereo, mono, or digital format and extracts ID3 tag info • Encodes an external audio source into mp3 format • Digital volume, bass, and treble controls • Supports I2C and SPI interfaces for communications with the PIC • Uses low power CMOS technology for portable applications

  10. Optimistic User Interface • This is just a concept of what the product could look like, the actual player will probably not resemble this. • We would like the actual product to have all of the interface buttons seen on this model

  11. CompactFlash Storage • Compact • Can hold large amounts of data • Inexpensive • Removable

  12. Operating System Read/Write to CompactFlash FAT16 File system Simple and compatible LCD Display track title, song time Temperature display User Interface Buttons Play, stop, next/prev. track Control Data Enc/Dec mp3 Software Interface

  13. SECONDARY HARDWARE SUBSYSTEMS

  14. FM TransmitterMAX2606 • Designed specifically for wireless communications systems • Can be tuned to frequencies between 70 and 150Mhz • Provides a secondary output channel • Perfect for using mp3 player in a car or over a home stereo

  15. LCD Display • Ideal size is a 16x4 dot matrix LCD character display. • Controller will be connected to the PIC using the I2C bus. • LCD will display song and artist name using ID3 tag. • LCD may also display track time and temperature.

  16. LCD Controller • The LCD Character display will be controlled utilizing Hitachi's 44780. • The 44780 is useful because it allows for an I2C connection instead of the typical 4-12 pin connection to the PIC. • The shift register, displayed above, is what enables the I2C interfacing.

  17. High-Intensity LED Flashlight • Another useful tool that will increase marketability, commonly seen on key chains – so why not on an mp3 player? • Even simpler to implement, can be wired as a separate circuit

  18. Digital Thermometer • Everyone wants to know what the temperature is outside, making this a very useful marketing tool • Simple circuitry, can easily be monitored by the PIC Temperature Sensor Op Amp Circuit PIC ADC

  19. Milestones • CDR • Prototype board built • PCB laid out and soldered • Basic hardware communicating • Milestone I • Reading a song from CompactFlash, decoding, and playing. • Milestone II • User interface software implemented • Non-essential hardware implemented • Expo • Complete working “swiss army knife” of mp3 players!

  20. Projected Schedule

  21. Divisions of Labor • Kevin: Compact Flash & Software • Greg: LCD Display & USB Interface • John: Processor & Temp Sensor • Mike: Processor & Peripheral Hardware • Jason: Mp3 Decoder/Encoder & Software

  22. Risky Business • Unfamiliar Technology • Questionable Achievability • Complex Interfaces Between Hardware Components • Complex Software User Interface

  23. Contingency Plan • Change USB interface to serial or remove PC connectivity altogether • Remove LCD display • Remove digital recording functionality • Remove secondary hardware functions (battery, temp, etc.) • Add second microcontroller to split responsibilities between different hardware components • Remove unnecessary user interface components (next/prev. song buttons)

  24. Estimated Costs $ 5.90 $11.77 $ 0.90 $ 1.02 $15.00 $ 1.00 $15.00 $33.00 $15.00 Processor Mp3 Encoder/Decoder FM Transmitter D to A Converter LCD w/Controller Temperature Sensor CompactFlash Card PCB Misc. Parts + Total $98.59 ≈$110-$130 Projected Market Sale Price

  25. Marketability • Target Audience: People between the ages of 13-30. • Will compete with multiple mp3 players on the current market, however with added features our product should rise to the top

  26. Questions?

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