Portfolio

Engineering Design portfolio

ice spectrometer

Heat transfer design and automation of a laboratory ice spectrometer

Click to see the paper!

image of an led panel display installed on a large panel window

large led panel display

designed and installed an interactive, transparent, led panel display for a large bay window.

read the paper!

Design thinking instructor giving a lesson on brainstorming and mind mapping

Problem solving curriculum

Designed a problem solving and design thinking curriculim in partnership with UC San Diego and UCSD Extensions

watch the presentation

Bar-end shifters

Design a set of indexed bar-end shifters to be:

– lightweight;
– inexpensive;
– customizable (# of speeds);
– easy to assemble and install

Click to see write-up

redesign and manufacture city-route bus

work with a team of engineers and designers to completely redesign a city-route bus to maximize cost-savings by:

– focusing on DFM to prolong mold-life;
– greatly simplifying assembly with DFA methodologies;
– modernizing aesthetics and usability to promote widespread adoptions;

I was responsible for the cockpit and overhead extrusions

Click to see write-up

close-up of electro-mechanical derailleur actuator

electronic derailleur actuator

Custom built electro-mechanical derailleur actuator with long battery life (3+ months) using a stepper motor and a zero-length spring balancer

Click to read the write-up!

google calendar app for room reservations

Room reservation app

Design a JavaScript calendar app that is:

– easily integrated with google calendar events;
– able to display room reservations and allocations for up to any number of rooms;
– color similar events / hosts to easily identify resources;

click to see in action

team photo of exhibit installation for interactive aquarium prototype

museum exhibit

Lead a team of intern-designers to build a hands-on museum exhibit that:

– explores “Sounds Under the Sea” ;
– is “Active & Prolonged Engagement”;
– is ruggedized for daily use;

Click to see write-up

photo of a makerspace including users and tools

5,000 sq ft makerspace

Design a makerspace for a large university that is capable of:

– supporting 20+ hands-on classes;
– addressing the needs of 8,000+ engineering and arts students;
– existing on a diverse and faceted campus;

Click for more information:

machine management app

Develop a desktop app written in python and a gui in wxpython that can:

– allow / deny access to machines based on training and certifications;
– manage the length of prints;
– charge users based on amount of material used and time of print;

GITHUB Repository…

Conceptual image of rotomold toilet -- rendereing by Alejandro Palandjoglou

Ultra low cost sanitation

Design a mass-produced, low cost toilet that can:

– lower manufacturing and shipping costs (stackable);
– lower assembly costs (single piece);
– lower maintenance costs (non-porous material, eg plastic);

Read more…

students using custom virutal reality headsets -- photo by students using custom virutal reality headsets -- photo by Katherine Connor

museum exhibit

Lead a team of intern designer to build an interactive museum exhibit that:

– showcases virtual and augmented reality;
– is “Active Prolonged Engagement”;
– is ruggedized for daily use; ;

Click for more information:

Laptop kiosk

Custom designed laptop cabinet to automate laptop rentals by:

– designing a custom wiring harness to route power and logic to custom solenoids;
– designing accompanying software to provide access via rfid and magstripe IDs;
– integrating alarms to train user behavior;

photo of a micro controller and an engineering curriculum

high school engineering curriculum

developed a microcontroller curriculum for an NSF funded high school engineering course

see it in action!

d2 llc

custom website using vanilla-javascript, html, and css.

check it out !

Engineering Design Portfolio (in text)

An easy-to-parse list of engineering design examples

Bar End Shifters

Designed a set of indexed bar-end shifters to be:

– lightweight;
– inexpensive;
– customizable (# of speeds and cable-pull);
– easy to assemble and install.

Click to see write-up

Large Scale Automotive Extrusions

Worked with a team of engineers and designers to completely redesign a city-route bus to maximize cost-savings by:

– focusing on DFM to prolong mold-life;
– greatly simplifying assembly with DFA methodologies;
– modernizing aesthetics and usability to promote widespread adoptions;

I designed the cockpit and overhead extrusions that are installed on the current version of the Optimus bus.

Click to see write-up

Herringbone Planetary Gear Reduction

Designed and manufactured a compact torque multiplier with a 25:1 output that can:

– fit into a small cylinder;
– be fabricated and assembled in-place (laser sintered);
– transmit minimal axial load

Room Reservations Web Application

Designed a JavaScript calendar app that is:

– easily integrated with google calendar events;
– able to display room reservations and allocations for up to any number of rooms;
– color similar events / hosts to easily identify resources;

Click to see in action

Interactive Aquarium Exhibit

Led a team of intern-designers to build a hands-on museum exhibit that:

– explores “Sounds Under the Sea” ;
– is “Active & Prolonged Engagement”;
– is ruggedized for daily use;

Click to see write-up

Active Learning Maker Space

Designed a maker-space for a large university that is capable of:

– supporting 20+ hands-on classes;
– addressing the needs of 8,000+ engineering and arts students;
– existing on a diverse and faceted campus;

Click for more information:

Machine Management Application

Developed a desktop application in python and bash that can:

– allow / deny access to machines (3d printers, laser cutter, drill press, CNC, etc.) based on user training and certifications;
– manage the length of use, including integrated dead-man-switches;
– charge users based on amount of material used and length of use;

Low Cost Sanitation

Designed a mass-produced, low cost toilet for under-developed regions that can:

– lowered manufacturing and shipping costs (stackable);
– lowered assembly costs (single piece, rotomolded design);
– lowered maintenance costs by using plastic and simplifying waste-removal ;

Read more…

Interactive Augmented Reality Aquarium Exhibit

Led a team of intern designer to build an interactive museum exhibit that:

– featured virtual and augmented reality experiences;
– provided “Active Prolonged Engagement” to museum visitors;
– is ruggedized for daily use and abuse by visitors of all ages;

Click for more information:

Laptop Checkout Cabinet

Retrofitted a Commercial-Off-The-Shelf (COTS) laptop cabinet to automate check-in and check-out for 60 laptops by:

– designing a custom wiring harness to route power and logic to custom-made solenoids;
– designing accompanying software to provide access via RFID and magnetic stripe IDs;
– integrating alarms to train users to charge laptops on return;

DeWald Designs LLC Website

Designed the WordPress (.org) website that you’re reading with a custom theme, custom JavaScript and custom CSS.