Sean's Engineering Portfolio

Overview

Note as of August 2026: I am currently in the process of a content migration from what was my previous site. Please excuse missing content, I am either in the process of documenting it or transferring it. Thanks!

Hi! Welcome to my engineering portfolio!

My name is Sean Lin. I am an astronautical engineer (specializing in spacecraft GNC) and I have been making for forever. Here you can find all the things I have built.

I also have included my academic coursework with their associated cheatsheets, projects, or an earnest course review.

I enjoy both hardware and software in the name of learning, utility, or art. Peruse everything I’ve done as an engineer, from my earliest high school tinkerings to my latest weekend timekillers.

Resume / CV Les guides pour les nuls Personal Blog

Projects

2026

Cubli thumbnail

Cubli (WIP)

Inspired by the project of the same name from ETH Zurich, I decided to build my own little controls sandbox. The goal is to get the cube to balance on a corner or an edge.

#controls#dynamics#PID#SS#LQR#systemID

2025

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Beyond EKF

An exploratory navigation project that employs filtering algorithms not classically taught in school but widely used in the world.

#GPS#navigation#EKF#UKF#particle-filter#H-infinity
A Perceptive Markowitz Model thumbnail

A Perceptive Markowitz Model

An exercise in optimization techniques: a simple portfolio composition optimizer.

#finance#genetic-algorithms#markowitz-model
Triac Light Dimmer thumbnail

Triac Light Dimmer

A showcasing of power electronic principles, all to dim a light.

#power-electronics#rectifiers#converters#FETs

2024

Wendy II thumbnail

Wendy II

Completely unrelated to Wendy I, this is a propulsion system test-bench that I designed for electric propellers.

#dynamics#propulsion#instrumentation#embedded-systems#RPi5
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Airship Aerodynamics

My first CFD project was to characterize the aerodynamic coefficients of an airship's envelope across varying attitudes.

#CFD#simulation#aerodynamics
Wendy I thumbnail

Wendy I

An NDA-friendly account of my internship work with MIT-spinout De-Ice.

#inverters#thermal-management#instrumentation#heat-transfer#IR imaging

2023

PaDeSa thumbnail

Parametric Design Learning (PaDeSa)

A collaborative project riding the then-nascent AI train. If AI can generate images and videos, why can't it generate... 3D objects?

#engineering-design#regression#GAN#classification#RL
Eggspresso thumbnail

Eggspresso

My mechanical engineering capstone project. An ambitious endeavor to have breakfast eggs be as easy as your Keurig coffee.

#mechatronics#manufacturing#design#prototyping#power
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Magnetic Levitation and Balanced Inverted Pendulum

We have graduated from Simulink models to real-world systems.

#PID#SS-control#dynamics#modeling#robustness

2022

Qubesat thumbnail

Qubesat

The single project I dedicated the most of my time to at Berkeley. We tried to launch this shoe-sized satellite containing an experimental quantum gyroscope.

#satellite#bus#structures#avionics#thermal#NASA#Astra

2021

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Voice Controlled Car

We used the most rudimentary of ML methods to teach a car to recognize 4 voice commands.

#circuits#voice_signals#PCA#SVD#controls
Bike Thief Violator thumbnail

Bike Thief Violator

My first original mechatronics project which gives the conniving bike thief an unscheduled prostate exam.

#mechatronics#ESP32#IMU#H-bridge
Mechanical Watch Escapement thumbnail

Mechanical Watch Escapement

A study on the internal dynamics of a mechanical watch as well as my first time LaTeX typesetting.

#dynamics#pendulum#tensors#LaTeX

< 2020

Build Your Own World thumbnail

Build Your Own World

A simple PvP game that served as an exercise in the usage of data structures.

#game-design#data-structures#graph-theory#java
Science Olympiad Builds thumbnail

Science Olympiad Builds

I was an engineering specialist for my years as a competitor. Here is my high school highlight reel.

#tower#boomilever#helicopter#mousetrap-vehicle#optics#wind-power#scioly

Courses

Stanford

Summer 2026

Berkeley

Spring 2023