Final Presentation Music Alarm Clock

Team Members Will Kalish Electrical Engineering Removable Media Device Audio Decoder Eric Womack Electrical Engineering MCU Setup User Interface Craig Bilberry Team Leader Electrical Engineering Layout and Design Atomic Clock Signal Erik LaVine Electrical Engineering Layout and Design Audio Decoder

Overview Introduction Introduction  Problem  Solution Constraints Constraints  Technical  Practical Testing Testing  Atomic Receiver  Display  Removable Media Controller  Audio Decoder Goals for Senior Design II Goals for Senior Design II References References Questions Questions

Problem Limited customizable options for people without digital media players  Beeping  Buzzing  Radio Conventional clocks develop inaccuracies over long periods of time

Solution A device that combines the functionality of an atomic clock, an alarm clock, and a digital media docking station without the need for a digital media player.

Constraints

Technical Constraints Name Description Audio QualityMusic must be played at a sample rate of 44.1 kHz Audio Compatibility The Music Alarm Clock must be able to play audio files that are widely used in order to be compatible with users existing audio libraries. Storage CapacityThe storage device must be able to store 30 minutes worth of audio files. Time Accuracy The clock must be able to keep time accurately using the atomic signal. Display Characteristics The display must be readable in all lighting conditions from across the room.

Practical Constraints Sustainability - Durability Sustainability - Durability  The Music Alarm Clock must be able to withstand mistreatment by the user. Social - Compatibility Social - Compatibility  The removable storage device must be compatible with current operating systems and hardware in PCs.

System Diagram Micro- Controller Audio Decoder Media Drive Atomic Signal Receiver Display

Atomic Receiver

Test Schematic Signal Strength Test

Serial Data Transfer Test

Serial Data Transfer Results

User Interface

Snooze Button Alarm Set Button Time Set Button Hour Increment Minute Increment Alarm On/Off Clock Chip Display Driver

Display Driver Slave Address Register Address Data

Real Time Clock

Display

Removable Media Controller

VDIP1

R/W Data Bits “e” (0x65) VDIP1 Test Results - Write

R/W Data Bits “e” (0x65) New/ Old VDIP1 Test Results - Read

VDIP1 Test Results – Text File

VDIP/VS1011 Sample Rate Sample Rate = # of bytes sent time = μs = 74.6 kHz

Audio Decoder

Write Command W Reg Addr Data

Audio Decoder Read Command R Reg Addr Data

Audio Decoder Sine Test

System Test

So Far… Technical Constraint Constraint Met Audio QualityYES Audio Compatibility YES Storage CapacityYES Time Accuracy YES Display Characteristics YES

Senior Design II Goals  Backup Battery System  Design PCB for Fabrication  Design and Construct Enclosure

References

Questions?