Matt McDonald

1
Project 2 Mousetrap Machine

• Group 11-1
• Matt McDonald
• Reid Neeleman
• Andrew Haderthauer
• Eric Starrett

2
Overview

• Intro (.5 min)
• Schedule (0.25 min)
• Review of L5a b (1 min)
• The Device (2 min)
• The Design (2 min)
• Methods (0.5 min)
• Goals (1.5 min)
• Evaluation (0.25 min)
• Discussion (0.5 min)
• ?Questions? (??? min)

3
Intro

• This presentation will be used to communicate to
  another team what we have done so far on Project
  2, as well as what we are planning to do. The
  goal is that we learn public speaking skills, and
  to get peer feeback on the work were doing for
  the project.

4
Schedule
WE ARE HERE
5
Assignment L5a

• Random Stimulation
• King powerful
• Jester funny interesting
• Disk memory storage
  space fit easily within square
• Pizza delivery stable
  sturdy platform
• Futuring
• 1. Launch the soda can in the air
• Possible other uses
• 1. Assist you in lifting heavier things
• 2. Soda-can holder
• 3. Handicapped Assistance

6
Assignment L5a

• Goals Covering the Device
• We want to work
• Must be accurate
• Lift as much weight as possible
• Lift that weight as high as possible
• Simple
• Workable
• Durable
• Fit within the cost limit
• Easy to build
• Easy to fix
• Easy to operate
• Creative
• Unique

• Academic Goals
• Get an exceeds
• Learn the methodology
• Further our engineering education
• Expand on skills learned from first project
• Work hard

• Personal Goals
• Get an exceeds
• Have fun
• Learn something
• Solidify what we have learned
• Work hard
• Do the work needed
• See the device work

7
Assignment L5a

• Team Goals
• Previously Mentioned
• Get an exceeds
• Further our engineering education
• Solidify what we have learned
• Create a device which satisfies all of the device
  goals
• Have fun
• Unmentioned
• Work well together
• Consider everyones views
• Constructively criticize
• Include everyone
• Follow team norms
• Solve the problem effectively

8
Assignment L5b

• Main Tasks for Creation of Device
• Develop Problem Definition
• Brainstorm Ideas
• Create Model
• Test and Modify Repeatedly
• Improve Faults
• Improve Performance
• Apply KTPPA
• Assemble Final Design
• Test Final Design

9
Assignment L5b

• Main Tasks for Celebration!!!
• Present Design
• Use Presentation Sandwich
• Explain Each Component
• Explain Design Process
• Explain Testing and Predictions
• Operate Device
• Explain Results

10
Assignment L5b

• Other Important Tasks
• Define Exceeds
• Evaluate
• Measure and Improve RPS
• Keep cost low
• Keep Records
• Eliminate Materials
• Find Alternates

11
The Device

• Preliminary Brainstorming
• Hydraulic
• Lever
• Pullies
• Gears
• Mousetrap Car
• Electricity
• Legos
• Technic
• Construct
• Battery Powered
• Counterweight
• Rescue Ladder

• Secondary Brainstorming
• Raising platform
• Lever w/ counterbalance
• Gears w/ beneficial ratio
• Mousetrap as launcher
• Parallelogram lever
• Lever w/ Pulley above

12
The Device

• Osbornes Checklist
• Combine
• Raising parallelogram platform w/ lever and
  counterbalance
• Modify
• Pullies alone lifting, lever on mousetrap
• Substitute
• Raising parallelogram platform w/ lever by
  pullies
• Combine
• Raising parallelogram platform w/ lever and
  counterbalance by pullies
• by pullies on the levers axle

13
The Design

• Idea 1
• Raising parallelogram platform
• Counterbalance
• Single large pulley on lever axle
• String attached to
• moving end of the mousetrap
• the pulley
• Mousetrap arm may be lengthened if more movement
  is needed

14
The Design

• Idea 2
• Raising parallelogram platform
• Counterbalance
• Mousetrap attached directly to lever
• No pullies
• No string
• Structure more complex
• Mousetrap axle must match lever axle in
  positioning

15
The Design

• Animation of Raising Parallelogram Platform

16
Design Methods Used So Far...

• Brainstorming
• Gantt Chart
• Random Stimulation
• Osbornes Checklist
• Blockbusting Techniques

17
Are We Meeting Our Goals?

• So far, so good.

18
Device Goals

• We can make any of these designs work
• Combinations of so many ideas unique
• Incorporates a lot of thought creative
• Can position fixed accurate
• Pieces simple to make or find easily fixable

19
Academic Goals

• Doing extra for an exceeds
• Learning Problem Solving Methodology
• Gantt Chart
• Brainstorming
• Random Stimulation
• Osbornes Checklist
• Continual Evaluation
• Working to the best of our abilities

20
Personal Goals

• Creativity is fun
• Working hard
• Doing the best we can
• Trying for an Exceeds
• Learning
• Mechanics
• Methodologies
• Critical Thinking Skills

21
Evaluation Checklist

• Challenged Info/Assumptions?
• Use of gravity to balance weight making the lever
  essentially effortless to turn
• Impact?
• Unique and creative
• Effective
• Causes Gee, why didnt I think of that?
  reactions
• Logical?
• Most efficient design mechanically

22
Discussion

• Using the work from L5a b, and this
  assignment, we have come up with two very good
  ideas for the mousetrap machine. We have
  evaluated ourselves up to this point and passed.
  We presented animation based on a difficult to
  explain portion of both our solutions. We need
  further examination of the solutions before we
  can begin to build on or the other.

23
Questions/Comments/Silent Reflections

• ?