~ ahoy, welcome aboard ~
MakerIsland
I'm Guillermo López Marín —
I build things for the fun of it and show them here: apps, electronics, AI experiments and 3D-printed parts. This is where I keep everything I feel like tinkering with.
Side Projects
Things I build out of curiosity and for fun: apps, hardware gadgets, and AI experiments. Each one was born to solve a real problem (or to have a good time trying).
K-VRC
A physical replica of K-VRC from Love, Death & Robots. Features a 3D-printed shell, servo-driven movement, an OLED display for facial expressions, and audio/vision capabilities powered by a Raspberry Pi Zero 2W.
Furby-GPT
Turning a 1998 Furby into an AI-powered interactive desktop assistant. Runs on a Raspberry Pi W for natural language processing with OpenAI and Google Speech, motor control for animation, and voice recognition via Picovoice.
Claude Mascot ESP32
A 3D-printed Claude mascot powered by ESP32 firmware. Includes a web dashboard, an ST7789 TFT display, and a live GPIO visualizer.
Furbygotchi
'Dad, could you make me a tamagotchi?' my kid asked. A real Tamagotchi built with an ESP32-S3, a color display and a 3D-printed case, with a full life cycle, energy and automatic sleep, and a web dashboard with messages from dad.
OpenClaw Mission Control
Mission Control for OpenClaw AI agents: a real-time dashboard showing status, thinking and tool calls of several agents working in parallel, with an integrated chat.
Cuentas Claras
A shared expense manager for couples and households. Splits costs proportionally by income, with subscription tracking, category limits, detailed stats, and real-time sync.
EduKids
A platform for parents that generates printable, personalized worksheets featuring kids' favorite characters. Includes a small quest-and-reward system that motivates learning away from the screen.
3D Print Calculator
A cost calculator for 3D printing. Estimates the price of your prints based on material, time, and other factors.
3D Character Prep AI
An AI tool for digital artists and 3D modelers. Turns 2D illustrations into technical turnaround sheets with consistent views (front, left, right, back) and a 3D mesh preview, speeding up the digital sculpting workflow.
DungeonMaster AI
Your pocket Dungeon Master, powered by Gemini. A web app for D&D 5e players and DMs with a character creator, AI dungeon generator, combat tracker, monster builder, loot generator, dice roller, and more.
DeLorean RC
An autonomous vehicle inspired by the DeLorean from Back to the Future. A robotics project combining remote control, autonomous navigation, AI vision, and a distributed master-slave architecture. Includes obstacle detection, video streaming, and OTA updates.
Two ways to get to know me
Same résumé, two experiences: a classic version for a quick read and an interactive one for whoever wants to poke around a bit more.
Newsletter
Emprendedor Pirata
My entrepreneur's logbook: failures, wins, and lessons learned while sailing between projects.
Have a project in mind or need a hand?
Let's talk!
Tell me your idea and let's figure out together how to bring it safely to shore.