Garage133

Status: Completed Stack: ESP32 • C++ • Ultrasonic • Home Assistant

Overview  

Garage133 is a DIY automation system for garage door control and monitoring. It supports a two car garage, and is designed to integrate with Home Assistant. It uses ultrasonic sensors to detect both the door state and car presence. Integrated relays allow for remote door operation via Home Assistant, supporting voice commands and NFC-triggered entry. Garage state estimation is performed using Hidden Markov Models (HMMs). The device has a responsive web interface written in Svelte.

Posts  

October 12, 2024 • 12 min read • Garage Doors

Garage133: DIY Garage Door Automation with ESP32 and Home Assistant

A complete guide to building a DIY garage door automation system using ESP32, ultrasonic distance sensors, and relays, with Home Assistant integration.

March 21, 2026 • 8 min read • Garage Doors

Garage state estimation in an uncertain world: sonar, ESP32, and HMMs

Learn how to use Hidden Markov Models (HMM) on an ESP32 to solve sonar noise and achieve reliable garage door state detection in Home Assistant.

Resources  

• GitHub: Garage133 Firmware & PCB