ESP32 & Home Assistant Guides
Home Assistant is an open-source smart home platform that lets you control devices, sensors, automations and dashboards from one place. With ESP32, you can build low-cost custom sensors, relays, displays and monitoring devices using ESPHome or MQTT.
Why use ESP32 with Home Assistant?
Home Assistant is a powerful open-source platform for building a smart home that stays local, flexible and under your control. It brings together devices, sensors, automations and dashboards into one system, without relying entirely on cloud services or locked ecosystems.
With ESP32, Home Assistant becomes even more useful. An ESP32 can be used for temperature and humidity sensors, air quality monitoring, relay control, energy tracking, displays, buttons, motion sensors and many other custom smart home devices using ESPHome or MQTT.
Start Here
ESP32 for Home Assistant Basics
A simple introduction to how ESP32 fits into Home Assistant and what you can build with it.
ESPHome VS MQTT
Understand the difference between ESPhome and MQTT so you can choose the right approach for your setup
Best ESP32 Boards for Home Assistant
Not every board is equally practical. Start with boards that are reliable and easy to use.
Popular Home Assistant Articles
Home Assistant Energy Dashboard Troubleshooting for ESPHome
Govee BLE Sensors with Home Assistant (Robust Local Setup with ESP32 Proxies + Automations)
Govee BLE thermometers/hygrometers are cheap and surprisingly useful in Home Assistant—if the Bluetooth side is engineered properly. The integration itself…
Room-Level Presence with BLE Beacons in Home Assistant (ESP32 Bluetooth Proxy Guide)
Room presence is one of those Home Assistant upgrades that changes everything. Not “someone is home”, but who is in…
Latest Home Assistant Articles
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ESP32 Sump-Pump and Flood Monitor with Home Assistant
Build an ESP32 sump-pump and flood monitor with ESPHome and Home Assistant. Track pump runtime, high water, leaks, power loss and failure conditions.
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OpenTherm Gateway with ESP32 and Home Assistant
Build an ESP32 OpenTherm controller or inline gateway for Home Assistant. Monitor boiler modulation, temperatures, faults and control heating setpoints safely.
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ESP32 Multi-Zone Heating Controller with ESPHome and Home Assistant
Build an ESP32 multi-zone heating controller with ESPHome and Home Assistant. Control room thermostats, zone valves and shared boiler demand safely.
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Matter over Thread with ESP32-C6 and Home Assistant: Setup Guide
Build a Matter-over-Thread device with ESP32-C6 and Home Assistant. Covers Thread Border Routers, BLE commissioning, Arduino Matter, IPv6 and troubleshooting.