Benjamin ThaiSoftware Engineer · ML

01PROJECTS

Things I've designed, built, and shipped.

A mix of tools people use, AI experiments, and low-level systems work.

Projects

11

Products and tools I have built and put in front of people.

EmbeddedNew2026

Arduino Obstacle Detection System

An ultrasonic proximity alarm on an Arduino UNO: the warning LED accelerates as an object closes in, and an IR remote drives the screens, units, and settings.

C++ArduinoHC-SR04InterruptsEEPROMLCD

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Cypress Scheduler

A course-scheduling tool that turns a list of desired classes into conflict-free weekly schedules.

Next.js 16TypeScriptPostgreSQLPrismaLeaflet

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Local AI Image Recognition

A photo server my family uploads to from their phones. Ask for a photo in plain English and it answers, without anything leaving hardware I own.

ImmichOllamaFastAPIDockerSelf-hosted

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AI Trading Workstation

A trading terminal with streaming prices, a simulated portfolio, and an AI copilot that executes trades through structured outputs instead of just describing them.

Next.js 16FastAPIPythonSSELiteLLM

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Information Retrieval Search Engine

Disk-backed Python search engine with tf-idf ranking over 55,393 crawled web pages, built to never hold the index in memory.

PythonSPIMItf-idfFastAPIInformation Retrieval

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Minesweeper AI Agent

An agent that plays Minesweeper by constraint propagation, and computes exact mine probabilities when deduction runs out.

PythonConstraint PropagationBacktrackingProbabilistic Inference

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UCI Web Crawler

A polite, multithreaded crawler that swept the UCI ICS web domains and reported what it found without falling into traps.

PythonBeautifulSoupMultithreadingWeb Crawling

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Prelegal

A drafting tool that turns a conversation into a finished agreement: the assistant asks the questions, fills the cover page, and hands back a PDF.

Next.js 16FastAPILiteLLMStructured OutputsDocker

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AI Kanban Board

A Kanban board with an AI sidebar that moves the cards itself, through the same validated code path the buttons use.

Next.js 16React 19FastAPIOpenRouterPlaywright

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FoodFit

A high school Android app that points a camera at a plate and tells you what is on it. The first project that taught me to finish things before adding to them.

JavaAndroidFirebaseMobile

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Expense Tracker

A Flask web app to log spending, categorize it, and visualize trends with auto-generated bar and line charts.

PythonFlaskPandasMatplotlib

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Machine Learning & Computer Vision

6

Models, inference, and the unglamorous data work that makes them usable.

Real-Time Object Detection

Real-time object detection on a live webcam feed with YOLOv8, announcing detected objects aloud via text-to-speech.

PythonYOLOv8OpenCVTTS

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Dog Breed Classifier

Transfer learning on 10,222 photos to identify 120 dog breeds, using a frozen MobileNetV2 feature extractor from TensorFlow Hub with a trainable softmax head and tf.data batching pipelines.

PythonTensorFlowKerasTransfer LearningJupyter

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Bulldozer Price Regression

Predicting auction sale prices across 400k rows of messy time-series data, with date feature engineering, missing-value imputation, and a RandomForestRegressor tuned to $5,951 MAE (R² 0.88).

Pythonscikit-learnPandasRandom ForestJupyter

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Heart Disease Classification

Predicting heart disease from clinical data: EDA, a three-model baseline comparison, hyperparameter tuning with randomized and grid search, and evaluation on ROC/AUC plus cross-validated precision and recall.

Pythonscikit-learnPandasSeabornJupyter

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ML Foundations Notebooks

Walkthrough and exercise notebooks for NumPy, Pandas, Matplotlib, and the full scikit-learn workflow, from data prep through tuning and pipelines. The groundwork under everything above.

PythonNumPyPandasMatplotlibscikit-learn

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Breast Cancer Classifier

A scikit-learn logistic-regression model predicting whether a tumor is malignant or benign on the Wisconsin dataset.

Pythonscikit-learnPandas

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Coursework

5

Data structures, algorithms, and fundamentals from my CS classes.

MIPS Assembly Labs (ICS 51)

MIPS assembly labs written for the MARS simulator: bit manipulation, control flow, primality testing, and image thresholding and affine transforms applied to PGM images.

MIPSAssemblyMARSComputer Organization

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Tokenizer & Word Frequency Counter (CS 121)

Command-line text analysis in pure Python: tokenizes a file into word frequencies and counts the unique tokens two files share, with a runtime complexity analysis for every function.

PythonTokenizationAlgorithmsComplexity Analysis

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Data Structures (ICS 46C)

Fundamental data structures and algorithms implemented from scratch in C++, with Google Test unit-test suites.

C++Data StructuresGoogle Test

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Intro to C/C++ (ICS 45C)

Projects and labs from UC Irvine's introduction to C and C++.

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CS50 Python

Python problem sets and projects from Harvard's CS50.

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Practice & Fundamentals

6

Exercises from learning something from scratch — the basics of the web, and embedded C++ on the Arduino.

Learning Arduino — 20 Activities

Twenty sketches working up from blinking one LED to interrupts, EEPROM, an LCD, and an ultrasonic rangefinder — the groundwork for the obstacle detector.

C++ArduinoInterruptsEEPROM

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Pricing Panel

A clean three-tier pricing table built from scratch with pure HTML and CSS flexbox.

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Museum of Candy

A responsive multi-section landing page built as a Bootstrap layout exercise.

HTMLCSSBootstrap

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CSS Photography Site

A styled photography portfolio page practicing layout, typography, and image presentation in pure CSS.

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Responsive Navbar

Drilling CSS flexbox and media queries by building a responsive navigation bar.

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HTML & CSS Assignments

A collection of early HTML and CSS assignments and styling exercises.

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