Portfolio

Building strange things for strange hardware.

These are the projects I'm most proud of — the ones that best represent what I can do.

engine-psx

C Python 🟢 Active ⭐ 79

An open-source Sonic fangame and engine for the original PlayStation 1. Written in pure C with Python asset scripts, tested on real hardware (SCPH-5501). Features a 360° physics engine, sprite rotation, and custom level format.

Play on itch.io · PSX Homebrew Lab →

ask-ai

Rust 🟢 Active

A cognitive interaction harness for LLMs. 50+ built-in tools, persistent memory, RAG, and adaptive personality. The most complicated project I maintain — a full AI agent framework from scratch.

Source on GitHub →

minerva-system

Rust 🟡 WIP ⭐ 6

A study on building ERP-like systems with microservices architecture. Rust backends, Kubernetes deployment. Diagrams and documentation included.

Source on GitHub → · Documentation →

majestic-lisp

Rust 📗 Book ⭐ 5

A Lisp language interpreter written in Rust, developed as a literate program. The implementation book is written in Brazilian Portuguese and doubles as both documentation and source code.

Source on GitHub → · Read the book →

psxtoolchain

Docker 🟢 Active ⭐ 9

A complete Docker toolchain for PlayStation 1 development. Build toolchains, homebrew projects, and ISO images in a container. The infrastructure that powers the PS1 homebrew community.

Source on GitHub →

Games

See the dedicated Games page → for itch.io embeds, playable demos, and videos. Below is a quick overview:

Sonic The Hedgehog XA

C Active

PS1 fangame with custom engine. Tested on real hardware.

cl-snake

Common Lisp Complete

Classic Snake clone in Common Lisp.

Orbit Defense Strikeforce

Common Lisp Complete

Space shooter. Lisp Game Jam 2018 submission.

sonic-lisp

Common Lisp WIP

Sonic engine clone in Common Lisp with live coding.

Super BrickBreak

JavaScript Complete

Breakout clone. Playable in the browser. Also ported to Rust/WASM.

Underwater Adventures

Construct 2 Complete

Platformer made during a Construct 2 course. 100 events, all used.

Tools & Infrastructure

emacs-org-dotfiles

Emacs Lisp ⭐ 8

Literate Emacs configuration written in Org Mode. Over a decade of tweaking, documented and reproducible.

k8s

Kubernetes

Personal infrastructure running on Kubernetes: SurrealDB, services, and monitoring. Homelab as code.

docker-emacs-export

Docker

Lightweight Docker image for Emacs Org Mode exports. Powers this site's build pipeline.

ai-dotfiles

Python ⭐ 1

Dotfiles for AI-related stuff. OpenCode, Hermes Agent, and Ollama configs — one repo to rule them all.

Languages & Interpreters

majestic-lisp

Rust 📗 Book ⭐ 5

Lisp interpreter + literate programming book in Brazilian Portuguese.

Source on GitHub → · Read the book →

cl-jackc

Common Lisp ⭐ 5

Jack compiler for the nand2tetris Hack platform. Written in Common Lisp.

cl-hackvmtr

Common Lisp ⭐ 4

VM Translator for the nand2tetris Hack platform. Written in Common Lisp.

cl-hackasm

Common Lisp ⭐ 3

Assembler for the nand2tetris Hack platform. Written in Common Lisp.

believe

C + TeX 📗 Book ⭐ 56

A Bel Lisp interpreter built with C, written as a literate program (book + source in one).

Source on GitHub → · Read the book (PDF)

Console & Retro

9mine

C ⭐ 3

Minesweeper clone for Plan 9 From Bell Labs. Pure C, runs on native Plan 9.

engine-psx

C Python ⭐ 79

Sonic fangame engine for PS1. See Highlights above.

psxtoolchain

Docker ⭐ 9

Complete PS1 development toolchain in a Docker container.

Studies & Experiments

Projects that started as learning exercises and grew into something interesting.

Introduction to C++ Programming

C++ 📗 Book

An introductory C++ programming book written in Brazilian Portuguese. Covers fundamentals, OOP, templates, and more.

Read the book (PDF) →

study

C++ ⭐ 5

Class notes and solved exercises. Organized by subject and semester.

org-abntex2

TeX ⭐ 19

Org Mode template for ABNT-formatted documents using abnTeX2.

wasm-demo-rs

Rust → WASM ⭐ 20

Basic Rust-to-WebAssembly demo using native WASM tools.

cl-ann

Common Lisp ⭐ 10

Artificial Neural Network implementation in Common Lisp.

A grammar language based on S-expressions

Common Lisp 📄 Paper

Paper on using S-expressions as a grammar specification language. Companion to the cl-jackc compiler.

Read the paper (PDF) →