ECE 477 MIDTERM DESIGN REVIEW TEAM 8 OUTLINE

ECE 477 MIDTERM DESIGN REVIEW: TEAM #8

OUTLINE • • • Project Overview Major Components Block Diagram Packaging Design Electrical Schematic PCB Layout Prototyping Progress Software Development Status Project Timeline Questions

PROJECT OVERVIEW --ANTIQUE MUSIC BOX Antique Music Box is a domestic music player with an oldfashioned Vacuum Florescent Tube display • Audio Streaming • SD Card • Smart Device via Bluetooth • Remote Control • Vacuum Tube Display • Equalizer Bar Graph • Track Information • Up-to-date Local Information

PSSCS -PROJECT SPECIFIC SUCCESS CRITERIA • An ability to receive and interpret audio file from SD card • An ability to use Valve Tube Amplifier to amplify audio signal • An ability to analyze audio spectrum and display in bar graph • An ability to remotely control the device fulfill its functionality via Bluetooth with Android Smart Device • An ability to obtain additional up-to-date local information

MAJOR COMPONENTS -MICROCONTROLLER It works as a processing center, coordinating the function of each external component and module, namely UART, SPI, I 2 C, ADC. • Operating Voltage: 3. 3 VDC • Number of I/O: 100 • Operating Speed: 40 MIPS • Expected Current Consumption: 5 m. A • Decoupling capacitors: 100 n. F YL

MAJOR COMPONENTS -MP 3 CODEC It is capable of decoding all the most common audio formats, i. e. , MP 3, ACC, to analog signal. • Number of I/O: 6 • Operating Voltage: 1. 8 , 3. 3 VDC • Clocking Frequency: 12 -13 MHz • High-Quality On-chip stereo DAC

MAJOR COMPONENTS --BLUETOOTH RN 52 Bluetooth module helps the function of remote control, audio streaming, and instant information update. • Frequency Band: 2. 4 – 2. 48 GHz • Operating Speed: 11520 bps • Operating Voltage: 3. 3 V • Embedded profiles: A 2 DP, AVRCP, SPP

MAJOR COMPONENTS ZX --POWER CONVERTER The Power Converter converts the voltage from AC to DC with a desired value. • Nominal Output Voltage: 12 V, 5 A, 60 W • Enough for Power Consumption (40 W needed)

MAJOR COMPONENTS --REGULATOR 1 The Voltage Regulator regulates and maintains a constant DC output voltage. • Brand: Murata • Input Voltage: 12 V • Output Voltage: 5 VDC and 3. 3 VDC • Supply for all digital devices

MAJOR COMPONENTS --REGULATOR 2 This Voltage Regulator steps up a DC input voltage into a constant DC output voltage. • Brand: Mean Well • Input Voltage: 12 VDC • Output Voltage: 24 VDC • Power: 30 W

MAJOR COMPONENTS --REGULATOR 3 This Voltage Regulator steps up a DC input voltage into a constant DC output voltage. • Brand: Nick De. Smith • Input Voltage: 12 VDC • Output Voltage: 250 VDC • Current Consumption: 2. 5 W, 40% efficiency

MAJOR COMPONENTS --VFD Vacuum Florescent Tube is capable of displaying characters as programmed. • Anode & Grid Voltage: 25 VDC • Filament Voltage: 2 VDC • Number of Segments: 18

BLOCK DIAGRAM

PACKAGING DESIGN • Dimensions: 10. 2 x 7. 8 x 6. 7 (inch x inch) • Materials: • Acrylic glass places on the top • Wood material encloses the four sides • Plastic material places at the base • Power control switches as well as 12 equalizer tubes placed in front • Transformer in small metal box along with 10 Tubes for information display placed on the top surface KL

ELECTRICAL SCHEMATIC

PCB LAYOUT －IV 4 TUBE Top View Bottom View

ELECTRICAL SCHEMATIC -AMPLIFIER (HIFI) • Increase the amplitude of the analog signal Rectifier Dual Triode

PCB LAYOUT AMPLIFIER－(HIFI) Top View Bottom View

ELECTRICAL SCHEMATIC Magic Eye IV-25

YL ELECTRICAL SCHEMATIC MUX Reset SD Card Socket Microcontroller Bluetooth Module Programmer MP 3 Codec

ELECTRICAL SCHEMATIC －MP 3 CODEC • Receive MP 3 file from microcontroller and decode into analog signal, output to MUX • Decoupling capacitors to achieve high fidelity

ELECTRICAL SCHEMATIC －SD CARD • Provide music input • Connect with microcontroller via SPI

ELECTRICAL SCHEMATIC －BLUETOOTH • Audio streaming from smart devices • Module Used: UART, I 2 S ZX

ELECTRICAL SCHEMATIC －MICROCONTROLLER • Microcontroller is a central unit • Isolated 8 MHz crystal • Decoupling capacitors 0. 1 u. F

PCB LAYOUT KL RCA Jack Communication Ribbon Power Regulator MP 3 Codec Bluetooth Module Micro controller Relay SD Card Socket Progra mmer

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SOFTWARE DEVELOPMENT STATUS -MICROCONTROLLER FUNCTION CALL

PROTOTYPING PROGRESS • Completed • Music audio streaming via Bluetooth • Magic Eye Indicator • VFD display (string, characters) • Commend sent from Microcontroller to Bluetooth

SOFTWARE DEVELOPMENT STATUS -ANDROID APPLICATION FUNCTION CALL AR

PROJECT TIMELINE

3 D PRINTING Questions?