#mqtt
6 open-source ESP32 project guides tagged #mqtt: build steps, hardware and firmware.
ESP32 MQTT Example: Publish & Subscribe Step-by-Step
Step-by-step ESP32 MQTT tutorial covering setup, publish, subscribe, relay control, and common mistakes using ESP-IDF and Mongoose OS examples.
EnergyMe-Home: Build a 16-Channel ESP32 Energy Monitor
Build EnergyMe-Home, an open-source ESP32-S3 smart energy meter that monitors up to 16 circuits with MQTT, Home Assistant, InfluxDB and REST API.
BambuHelper: ESP32 Real-Time Monitor for Bambu Lab Printers
Flash BambuHelper onto an ESP32 to get a live color TFT dashboard for your Bambu Lab printer — temps, progress, AMS, fans, and HMS errors over MQTT.
ESPAltherma: Monitor Your Daikin Heat Pump with ESP32
Turn an ESP32 into a live heat pump monitor. ESPAltherma reads your Daikin Altherma via the X10A port and streams data to Home Assistant over MQTT.
Project Aura AQ: ESP32-S3 Air Quality Monitor with Home Assistant
Build a polished ESP32-S3 touchscreen air quality station with PM, CO2, VOC, HCHO sensors, MQTT, Home Assistant integration, and no cloud dependency.
Nuki Hub: Turn an ESP32 into a Smart Lock Bridge
Flash Nuki Hub to an ESP32 to bridge any Nuki Smart Lock or Opener to Home Assistant, ioBroker, FHEM and more over local MQTT.