Fall 2005

1

CS-EE 480

University of Portland School of Engineering

Project SnakeAutomated Guitar String Tuner

Kenneth AramakiKevin AtebaraPetra Carlson

Kevin Vitayaudom

BOOM BOOM HSSSS!

Fall 2005

2

University of Portland School of Engineering

CS-EE 480

Overview

• Introduction to Guitar Tuner

•Block Diagram

• Accomplishments

• Plans

• Issues/Alternatives

Fall 2005

3

University of Portland School of Engineering

CS-EE 480

Introduction to Guitar Tuner

• Why a guitar tuner?

• What does it do?

• How will it work?

Fall 2005

4

University of Portland School of Engineering

CS-EE 480

Block Diagram

LPF

Phase Locked Loop

DC MotorAMP Guitar

LPF

VCO

Phase Locked Loop

VθVV

V

V V V

V

Fall 2005

5

University of Portland School of Engineering

CS-EE 480

MilestonesNumber Description Original

DatePrevious

DatePresent

Date

1 Product Pre-Approval 9/15/05 9/15/05 9/20/05

2 Functional Spec 0.9 9/27/05 9/27/05 9/27/05

3 Finalize Parts Needed 10/3/05 10/3/05 10/3/05

4 Project Approval 10/7/05 10/7/05 10/7/05

5 Order Parts 10/24/05 10/24/05 10/24/05

6 Design Release 12/9/05 12/9/05 12/9/05

7 TOP Approval 2/24/05 2/24/05 2/24/05

8 Prototype Release 4/7/05 4/7/05 4/7/05

9 Founders Day 4/11/05 4/11/05 4/11/05

10 Final Written Report 4/28/05 4/28/05 4/28/05

Fall 2005

6

University of Portland School of Engineering

CS-EE 480

Accomplishments

• Administration

• Block Diagram

• Pre-Approval

• Parts Needed

Fall 2005

7

University of Portland School of Engineering

CS-EE 480

Plans

• More Parts Research

• Procurement of Parts

• Approval Meeting

• Integration of Design Blocks

Fall 2005

8

University of Portland School of Engineering

CS-EE 480

Issues/Alternatives

• Motor Control

• Voltage Comparison in PLL

• Possibility of Self-plucking?

Fall 2005

9

University of Portland School of Engineering

CS-EE 480

Questions?