Senior Design

1University of Portland School of Engineering

Team Shortnose Sucker:Project Auto-Shifting Bicycle

• Team– Tim Slevin-Vegdahl (Fall Team Lead)– Joan Javier (Spring Team Lead)– Cyrus Medrano– Brendan Figuly

AdvisorsDr. Robert AlbrightDr. Peter Osterberg

Industry RepresentativeMr. Walter Harrison

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2University of Portland School of Engineering

Introduction• Design a device that will automatically shift

the gears of a bicycle • Benefits new bicyclist and people who do

not know how to properly shift gears on a bicycle

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3University of Portland School of Engineering

Scorecard• Securely mounted magnetic sensor onto

bicycle with buffer attachment for accurate read

• Tested magnetic sensor on actual bicycle• Mounted the actuator

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4University of Portland School of Engineering

Plans• Complete a working Plan D (PIC) controller• Complete full system testing by the end of

next week• Get Final Report v. 0.95 and 1.0 approved

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Testing Magnetic Sensor

University of Portland School of Engineering

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Magnetic Sensor Video

University of Portland School of Engineering

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Reprogramming CPLD

University of Portland School of Engineering

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Testing CPLD

University of Portland School of Engineering

Senior Design

9University of Portland School of Engineering

MilestonesStatus Description Original

TargetPreviousTarget

PresentTarget

missed Design Document v. 1.0 Approved

24 Nov 10 24 Nov 10 3 Dec 10

completed Complete Magnetic Sensor 31 Jan 11 31 Jan 11 25 Jan 11

completed Complete Magnetic Sensor Testing

11 Feb 11 11 Feb 11 11 Feb 11

missed Actuator Device Complete 25 Feb 11 10 Mar 11 8 Apr 11completed Complete First Draft of

Final Report 13 Mar 11 13 Mar 11 13 Mar 11

missed Complete Actuator Testing 25 Mar 11 25 Mar 11 8 Apr 11missed Complete System Testing 1 Apr 11 30 Mar 11 8 Apr 11

missed Complete v. 0.95 of Final Report

1 Apr 11 1 Apr 11 6 Apr 11

on track Final Report v. 1.0 Approved

8 Apr 11 8 Apr 11 8 Apr 11

on track Founder’s Day Presentation

12 Apr 11 12 Apr 11 12 Apr 11

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10University of Portland School of Engineering

Concerns/Issues

• MOSIS chip will not be here for Founders Day and the Plan C (Verilog) does not function to the specs we need. We will need to make a Plan D (PIC) controller.

• Our schedule will be behind on the actuation because we need a driver for the stepper motor.

Senior Design

11University of Portland School of Engineering

Conclusions• The sensor and actuator are mounted onto

the bicycle• The Plan C (Verilog) isn’t working because

of compiling issues• We hope to complete a full system test by

next week along with the Final Report v 1.0