DESIGN PORTFOLIO

for Nathan Jones

TEST FIXTUREfor micro-scale measurements

Summary

■ Task– Determine how hard we are pushing on a material (in

nN and mN)■ Purpose

– Understand adhesion characteristics of various materials

■ Utilized Theory– F = kx (Hooke’s Law)

■ F = How hard we’re pushing (Unknown)■ K = Inherent spring constant of a cantilevered beam■ X = Measured displacement

Summary (Contd.)

■ Method– Double-Double Cantilevered Beam Design

■ Opposing Cantilevers: Prevents lateral movement as beam is deflected

■ Two-Layers: Prevents angular deflection at beam tip

3D Model of the Beam Assembly showing carbon fiber

spacing blocks

Design Overview

Design Overview (Contd.)

Roles & Exposure

3D Modeling

Manufacturing-Manual mill-3D printing

Project Manager

ANSYS analysis

Design revision & prototyping

Engineering theory calculation

DRY ERASE MARKERVending Machine

Demonstration

Project Summary

■ Task– Create a mechatronic device that would benefit the University of

Pittsburgh in some manner■ Purpose

– Provide engineering students access to dry erase markers■ Method

– Accessed by Pitt ID, allows user to select marker color and quantity

– 3D printed tumbler selects marker from hopper and accurately dispenses it

Marker Vending Machine

I2C communication

UI Inputs: - RFID - Keypad Arduino 1:

Handles User I/O

UI Outputs- LCD- Stepper Motors

Arduino 2:Drives hopper stepper motors

Roles & Exposure

Project Manager

Design Lead

Software Lead

3D Modeling + FDM Printing

Design revision & prototyping

Systematic hardware + software troubleshooting

CAVE TREKKERA Video Game Sans Video

Demonstration

Project Summary

■ Task– Utilize market research, consumer feedback based UI/UX, preto-

and proto-types to find and solve a problem■ Problem

– Visually disabled persons cannot participate in conventional video games

■ Solution– Create a video game that allows a user to play without visual

feedback

Project Summary (Contd.)

■ Method– Tactile direction feedback to orient user– Audio feedback to communicate game

messages– Control lever advances the user forward by

one space

System Diagram

Serial Communication

UI Inputs: - Orientation - Movement

Computer:Game Logic

Arduino:Translates User Interface I/O

UI Outputs- Key- Wall Presence

Roles & Exposure

Member + Advisor to manufacturing group

Prototype Deployment

Market Research

Feedback based design

Design revision & prototyping

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