Mutrix TechnologyBenson LamShuozhi YangWinfield Zhao

Gary HengWeiguang Mao

Team Members and Roles Design Motivation Project Description and Features System Overview Schedule and Milestone Final Thought Team Dynamic

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Benson Lam – Chief Executive Officer (CEO)◦ Role in the project:

Benson Lam devoted most of his time in developing the firm software and designing the mechanical system of Dreambox.

Winfield Zhao – Chief Technical Officer (CTO)◦ Role in the project:

Winfield Zhao mainly focus on the whole mechanical system of Dreambox.

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Shuozhi Yang – Chief Programming Officer (CPO)◦ Role in the project:

Shuozhi is the main programmer in the team. His strong programming background is one of the key componets to the success of Dreambox.

Gary Heng – Chief Design Officer (CDO)◦ Role in the project

Gary focused on the design of amplitude patterns. He also built the beat algorithm.

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Weiguang Mou – Chief Financial Officer (CFO)◦ Role in the project:

Weiguang focused on the design of LED pattern. He also assisted building the mechanical system.

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Strong market for electronics devices◦ Digital music gadgets take a large portion

Digital picture frames Digital music box I-animals

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Durability won’t last long in the competitive market if:◦ Impractical functionality ◦ lack of innovation

Solution:◦ A digital music gadget that has practical functionality

Entertainment system Home decoration

◦ DreamBox!!

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Statue consists of 25 cells

Each cell has◦ Crystal bar◦ Mechanical system◦ LED

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Two Modes of operation

◦ Dynamic Mode: A music player is connected to the system Music is filtered and analyzed by an algorithm Algorithm detect the beat level of the music and output

different 3D shape

◦ Static Mode: Display shapes drawn by the users The users first define shapes on the GUI GUI communicate with the board and output the shapes

users defined

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Mechanical◦Design Mechanical system◦Component choosing

Hardware◦Motor Controller◦LED control circuit◦dsPIC development board◦ADC pre-processing circuit

Dynamic Mode

◦Beat Detection Algorithm

Static Mode◦GUI ◦Communication

Pattern Design◦LED pattern◦Motor pattern

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Main Components◦ Crystal Bar◦ Linear Movement

Slot◦ Gear Rack and

Gear Set◦ Servo Motor

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Crystal Bar ◦ Made of Thin Plastic Glass◦ Print with White◦ 4X4X9cm

Linear Movement Slot ◦ Hold the Gear Rack in

Place◦ Tricolor LED installed on

the Top

Gear Rack and Gear Set ◦ Translate Rotational

Motion to Linear Motion

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Micro Servo Motor◦ Allowable 180 degree turn◦ Control by Pulse Width from 0.5ms to 2.5 ms in 15 ms

period◦ Operating Speed: 0.3sec/60degree

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4 Main Sections◦ Motor Controller◦ Tri-Color LED Control Circuit◦ dsPIC Development Board◦ ADC Pre-processing Circuit

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Motor Controller – Lynxmotion SSC-32 Servo Controller◦ High Resolution 1us◦ Support up to 32 Servo

Motors◦ Allow Single Move and

Group Move◦ Serial Interface (RS-232)

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Motor Controller – Data Formal◦ # <ch> P <pw> S <spd>... # <ch> P <pw> S <spd> T

<time><cr>

◦ <ch> =Channel number in decimal (0 – 31)◦ <pw> =Pulse width in microseconds (500 – 2500)◦ <spd> =Movement speed in uS per sec for one channel.

(Optional)◦ <time> =Time in mS for the entire move, affects all

channels, 65535 max. (Optional)◦ <cr> =Carriage return character

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Tri-Color LED Control Circuit

◦ Allow Full Color Control Switching between each Color (Red, Blue and

Green)

◦ Allow Full Brightness Control

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dsPIC Development Board – dsPICDEM GP 1.1 Plus Development Board◦ dsPIC30F6014A

12-bit 200Ksps ADC 4Kbytes EEPROM Up to 30MIPS Operation

◦ Two RS232 Channels◦ Four Push Buttons◦ 122X32 dot LCD◦ Audio Input & output Sockets

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Pre-processing circuit for data capturing

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Display static decorative styles designed by users

Provide full control over all components of DreamBox

Provide users a convenient platform to design their own decorative styles

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Features◦ Ease of use:

Plug-and-play Straightforward graphical user interface on PC Simple user interface without PC Recall user-designed styles at any time and any

place

◦ Full control over DreamBox Crystal bars LED’s

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Static Display Mode

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Establish Connection

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Main Control Panel

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Crystal Bar Mapping

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Button Color Indication

LED Select

Bar Rise (left-click)

Bar Drop(right-click)

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Simple on-board GUI

Establishing connection with DreamBox

Maintaining Connection

Saving Data to DreamBox

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Establishing connection with DreamBox

◦ Handshake Stage I: GUI sends flag requesting for establishing connection; if no reply is received in timeout time, prompt message; if expected reply is receive, enter Handshake Stage II.

◦ Handshake Stage II: GUI sends flag requesting data from DreamBox; if no reply is received in timeout time, prompt message; if data is received completely, GUI enters main control panel.

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Maintaining Connection

◦ Step I: DreamBox sends confirmation byte to GUI if no command is received within certain amount of time

◦ Step II: If no reply is received within timeout time, DreamBox exits from connection state; if expected reply is received, connection state is maintained

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Saving Data to DreamBox

◦ Synchronized data transfer to provide sufficient time for EEPROM storing operation

◦DreamBox returns Rdy signal to GUI for each byte of data processed

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Windows Media Player

Music Player – Winamp

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Implemented beat detection algorithm in Matlab

Surprisingly accurate result

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Sampling rate 46.1 KHz Constantly interrupts the CPU for real time

calculation

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Compact Disc Quality Design Choice

Pre-defined Pattern Design Welcome Pattern Spiral Shape

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When Music is Unplugged or Paused Static LED Sequence Displayed 6 Random Assignment Snake, Clock, Heart, Row Rotation, Diagonal

Rotation, Disco

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Random Assignment

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Random Assignment

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Increase Display Resolution

Wireless Connection

Noise Reduction

Signal Processing Algorithm Improvement

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Proposed Actual Discrepancy

Microcontroller dev. Board $300 $570 -$270

LED’s $20 $30 -$10

USB-to-Serial Adaptor n/a $20 -$20

Breadboard n/a $10 -$10

Servo Motors $500 $160 $340

Gears n/a $80 -$80

Motor Controller n/a $66 -$66

Crystal Bars $50 $50 $0

Power Amplifier $200 $0 $200

Shift Register n/a $20 -$20

Circuit Components $50 $0 $50

Cover $100 $20 $80

Others $50 $120 -$70

Total: $1270 $1146 $124

Engineering Science Student Endowment Fund(ESSEF) Award$500

School of Engineering Science $50

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Music Decoration

Help deaf people feel music

Ice lantern show

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Accomplished a project from nothing to completion

Hands on experience with ◦ hardware design ◦ firmware design ◦ mechanical design

Lots of programming Improved soldering skills Improved documentation skills Shipping to Point Robert can save a lot !!!

No internal conflict Everybody has been working hard Teamwork!!!

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Dreambox is successfully built and working as expected◦ Different crystal bar and LED patterns output in

Dynamic mode◦ A user-friendly software user interface is built◦ Users can build the shape of their interest easily

in the static mode

We will continue this project for further improvement

Sources of Information http://www.microchip.com http://www.kelvin.com http://www.leeselectronic.com http://www.robotshop.ca http://www.toysonics.com

We would like to thank◦ Patrick Leung◦ Steve Whitmore◦ Jason Lee◦ Jamie Westell