ha_mqtt_light_with_WiFiManager_mDNS_and_OTA

MQTT Light with WiFiManager, mDNS and OTA - Home Assistant

A simple example to control the built-in led connected to a NodeMCU board (ESP8266).

Advanced features

• WiFiManager: To list the available Wifi AP and to connect to one of them.
• mDNS: To look for the IP address and the port of the local MQTT broker.
• OTA: To update the firmware over-the-air.

Configuration

MQTT broker server

Steps:

• sudo apt-get install avahi-deamon (installed by default)
• sudo nano /etc/avahi/services/mqtt.service
• Copy/paste the following lines:

<?xml version="1.0" standalone='no'?>
<!DOCTYPE service-group SYSTEM "avahi-service.dtd">
<service-group>
    <name replace-wildcards="yes">%h</name>
    <service>
        <type>_mqtt._tcp</type>
        <port>1883</port>
    </service>
</service-group>

• sudo service avahi-daemon restart

Home-Assistant

Warning: 'F90D5F' corresponds to the chip ID of my ESP8266. Your chip ID is visible in the logs and corresponds to the name of the initial AP.

configuration.yaml :

light:
  platform: mqtt
  name: 'Office light'
  state_topic: '9A6C95/light'
  command_topic: '9A6C95/light/switch'
  optimistic: false

Steps

1. Select the Wifi AP provided by the ESP8266. A window is open,
2. Select "Configure WiFi",
3. Choose your Wifi AP in the list and enter your password,
4. Enter the MQTT username and password. Press "save",
5. Configure Home-Assitant.