Transcript
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Team Gray WolfPropeller Display

TeamBrent PiriyakarnjanakulDavid LewisTom Fuchs Advisor

Dr. Inan, Dr. Osterberg

Industry RepresentativeDr. Sig LillevikIntel Corp.

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Thank You!

• Thanks and Appreciation– Dr. Aziz Inan, Dr. Sig Lillevik, Dr. Peter Osterberg, Dr.

Wayne Lu, Peter Rachor, Craig Henry and Allen Hansen

Founder’s Day University of Portland School of Engineering

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Agenda

• Introduction

Tom• Background

Tom• Methods

Tom/David• Results

Tom/David• Conclusions

David• Demonstration

David

Founder’s Day University of Portland School of Engineering

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Introduction

• Why a Rotating LED Display?– Unique image display

• What you will learn– Basic principles of the device– Device architecture and design – Final results– What we learned

Founder’s Day University of Portland School of Engineering

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Background

• Persistence of Vision

• Our Personal Goals– Incorporate: Semiconductor Design, PIC

Microcontroller, Digital Sensor

Founder’s Day University of Portland School of Engineering

PU

E E / C S

(2000 RPM)

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Background (Cont)

Founder’s Day University of Portland School of Engineering

IR Sensor PIC Lights

Logic Unit

MOSIS

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Background (Cont)• Sensor

– Infrared Phototransistor– Infrared Emitter

Founder’s Day University of Portland School of Engineering

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Background (Cont)

• Logic Unit– MOSIS/CPLD

• Calculates the time of 1/120th section of one rotation– PIC Microcontroller

• Controls timing of light emitting diodes (LEDs)

Founder’s Day University of Portland School of Engineering

CPLD PIC

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Methods

• Standard Engineering Procedure• Proposal• Functional Specification

– Project scope and functionality• Design

– High and low level architectures– Complete detailed design

• Implementation and Testing

Founder’s Day University of Portland School of Engineering

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Methods• Communication

– Weekly meetings with group and advisor– Organizational technologies

• Basecamp, Google Calendar, Gmail

• Effective Allocation of Resources– Division of tasks

Founder’s Day University of Portland School of Engineering

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Methods

Founder’s Day University of Portland School of Engineering

Rotational LED Display

Electronic Components

MOSIS/CPLD PIC Infrared Sensor LED

Peripheral Components

Electric Motor

Power Delivery

Circuit Layout

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Results

Founder’s Day University of Portland School of Engineering

IR Sensor PIC Lights

Logic Unit

MOSIS

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Results

• MOSIS Educational Program • Provided free masking, fabrication and packaging

of device design– Structured chip design experience– Real design necessities– Hard deadlines for complete design

• MOSIS Architecture– Divides rotation time into 120 sections

Founder’s Day University of Portland School of Engineering

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Results• MOSIS Architecture

– Challenge• Unknown rotation time

– Solution• Primary counter counts to 120 • Reset• Secondary counter increments each time Primary resets• Secondary is the number of clock ticks in one section (1/120th)

of a rotation

Founder’s Day University of Portland School of Engineering

100 /5 = ?

P S

1 5 1

P S

1 5 20P S

1 5 10

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Results

Founder’s Day University of Portland School of Engineering

P S

0 0

P S

1 120 1

P S

1 120 T1/120th

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MOSIS Chip Block Diagram

Founder’s Day University of Portland School of Engineering

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Results

• MOSIS Device Architecture

Founder’s Day University of Portland School of Engineering

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Results

Founder’s Day University of Portland School of Engineering

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Results

• PIC Microcontroller– Uses input time from MOSIS– Illuminates LEDs in every section

Founder’s Day University of Portland School of Engineering

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Results

Founder’s Day University of Portland School of Engineering

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System Circuitry

Founder’s Day University of Portland School of Engineering

LEDs

CPLD

VR

555 Timer

PIC

IR Sensor

CPLD

VR

555 Timer

LEDs

IR Sensor

PIC

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Power Distribution System

Founder’s Day University of Portland School of Engineering

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Board Layout

Founder’s Day University of Portland School of Engineering

SMD LEDS

PIC

CPLD

IR Sensor

Voltage Regulator

555 Timer

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Conclusions

• Device Near Full Functionality– Power fluctuations– Integration of electronics

• Technical and Personal Knowledge– Problem solving– Multiple perspectives and hands

• Standard Engineering Procedure

Founder’s Day University of Portland School of Engineering

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Thank You.

Are there any questions?

Founder’s Day University of Portland School of Engineering

http://teaching.up.edu/srdesign/AY11/GrayWolf/index.htm


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