Home Assistant is a home automation platform running on Python 3. The goal of Home Assistant is to be able to track and control all devices at home and offer a platform for automating control [Home-Assistant].
MQTT is a machine-to-machine (M2M)/"Internet of Things" connectivity protocol. It was designed as an extremely lightweight publish/subscribe messaging transport. It is useful for connections with remote locations where a small code footprint is required and/or network bandwidth is at a premium [mqtt.org].
To integrate MQTT into Home Assistant, a MQTT broker is mandatory. More information can be found at the MQTT component's page.
configuration.yaml :
mqtt:
broker: 127.0.0.1
port: 1883
client_id: '[Redacted]'
username: '[Redacted]'
password: '[Redacted]'Lights, sensors, switches and more can be built on top of MQTT. This section contains a few examples based on MQTT and on a NodeMCU board (ESP8266).
| Title / link | Description |
|---|---|
| Light | A simple example to control a led |
| Light | A simple example to control a led and its brightness |
| Light | A simple example to control a RGB led |
| Light | An alternative firmware for the Arilux AL-LC0X LED controller |
| Light | A simple example to control a RGBW led, based on the MQTT JSON Light component (brightness, rgb, white, color temperature and effects) and including the MQTT Discovery |
| Light | An alternative firmware for AI-Thinker RGBW bulbs, based on the MQTT JSON Light component and including the MQTT Discovery functionality |
| Switch | A simple example to control a switch |
| Switch | An alternative firmware for the Sonoff Basic switches |
| Switch | An alternative firmware for the Sonoff TH switches, including the MQTT Discovery functionality |
| Sensor | A simple example to measure the temperature and the humidity (DHT22 sensor) |
| Sensor | A simple example to measure the brightness (photocell) |
| Binary Sensor | A simple example to detect motions (PIR motion sensor) |
| Binary Sensor | A simple example to monitor the state of a window/door |
An advanced example, using WiFiManager, mDNS and OTA, is available here.
A school project based on Home Assistant, MQTT and NodeMCU modules is available here and the demo, here.
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