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 Goals Goals Changes/Refinements Changes/Refinements PCB PCB Test Plan Test Plan Bill of Materials Bill of Materials Packaging Packaging Overall System Test Overall System Test 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 portable media docking station without the need for a portable 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.

Goals

Design I Goals Technical Constraint Constraint Met Audio Quality YES Audio Compatibility YES Storage Capacity YES Time Accuracy YES Display Characteristics YES

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

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

PCB Design

Main PCB Layout Design

Main PCB

Display PCB Layout Design

Display PCB

Test Plan

Testing Subsystems  Atomic Receiver  Receiving and decoding accurate signal  Maintain to keep time accurate  Backup Battery System  Simulate  Test  Display Brightness  USB/MP3  Read mp3 file  Decode mp3 data  Audio Amplifier

Atomic Receiver Test

Serial Data Transfer Test

Serial Data Transfer Results

Backup Battery Schematic

Backup Battery Simulation

Backup Battery Test Data Battery Current Plug Current Plug Out 600mA0 Plug In 0610mA

Display Brightness Test

USB/MP3 Test

Audio Amplifier Test

Audio Amplifier Result

Bill of Materials DescriptionPart NumberPrototype Cost Production Cost (per unit) 1000 Units fuse holderF043TB-ND clock chipDS headers for breakout boards capacitor (22 pF)BC1034CT-ND capacitor (1 uF) ND capacitor (100 uF)P12924-ND capacitor (10 uF)T350E106K016AT capacitor (47 uF)P12923-ND segment displaysLDS-CA14RI connector (4 pin) connector (5 pin) connector (8pin)er LED (red) ND LED (green) ND

Bill of Materials DescriptionPart NumberPrototype Cost Production Cost (per unit) 1000 Units resistor (2.2 k)2.2KH-ND resistor (1 k)1.0KH-ND resistor (1 k surface mount) KACT-ND regulator (3.3 V)LM2937ET-3.3/NOPB regulator (5V)L4940V diode (schottky 15A/35V)MBRB1535CTDICT display driverMAX PIC24 (64 pin breakout) Atomic Reciever Module ND USB Host Controller ND MP3 DecoderBOB MHz Crystal ND KHz Crystal ND Audio Amplifier ND Battery Holder1249K-ND Totals:

Packaging Top Back Front

Packaging Left SideRight Side

Overall System Test

Questions?