# Integrate Home Assistant
## Auto discovery
So as to enable HASS auto discovery with MQTT you have to uncomment [ZmqttDiscovery](https://github.com/1technophile/OpenMQTTGateway/blob/0180a0dbd55ed8e0799e30ee84f68070a6f478fa/User_config.h#L99) in User_config.h. Note that Home Assistant discovery is enabled by default on all binaries and platformio configurations except for UNO.

Once done, enable discovery on your MQTT integration definition in HASS.

OMG will use the auto discovery functionality of home assistant to create sensors and gateways into your HASS instance automaticaly.

The gateway device will be available into Configuration->Devices section of Home Assistant.

![](../img/OpenMQTTGateway_Home_Assistant_MQTT_discovery.png)

## Manual integration examples
From @123, @finity, @denniz03, @jrockstad

### Door sensor
```yaml
binary_sensor:
  - platform: mqtt
    name: "test"
    state_topic: "home/OpenMQTTGateway/433toMQTT"
    value_template: >-
      {% if value_json.value == '7821834' %}
        {{'ON'}}
      {% elif value_json.value == '7821838' %}
        {{'OFF'}}
      {% else %}
        {{states('binary_sensor.test') | upper}}
      {% endif %}
    qos: 0
    device_class: opening
```

```yaml
binary_sensor:
  - platform: mqtt
    name: doorbell
    state_topic: 'home/OpenMQTTGateway/SRFBtoMQTT'
    #value_template: "{{ value_json.raw }}"
    value_template: >- 
      {% if value_json.value == '14163857' %}
        {{'ON'}}
      {% else %}
        {{states('binary_sensor.doorbell') | upper}}
      {% endif %}
    off_delay: 30
    device_class: 'sound'
  - binary_sensor:
    platform: mqtt
    name: light_back_sensor
    state_topic: 'home/OpenMQTTGateway/SRFBtoMQTT'
    #value_template: '{{ value_jason.value }}'
    value_template: >- 
      {% if value_json.value == '1213858' %}
        {{'ON'}}
      {% else %}
        {{states('binary_sensor.light_back_sensor') | upper}}
      {% endif %}
    off_delay: 5
  - binary_sensor:
    platform: mqtt
    name: rf_outlet_sensor
    state_topic: 'home/OpenMQTTGateway/SRFBtoMQTT'
    value_template: >- 
      {% if value_json.value == '16766303' %}
        {{'ON'}}
      {% else %} 
        {{states('binary_sensor.rf_outlet_sensor') | upper}}
      {% endif %}
```

### Motion sensor
```yaml
binary_sensor:
      - platform: mqtt
        name: "Bewegung_Schlafzimmer"
        #device_class: motion
        state_topic: "home/OpenMQTTGateway1/HCSR501toMQTT"
        value_template: '{{ value_json["presence"] }}'
        payload_on: "true"
        payload_off: "false"
```

### Switches

```yaml
#switches
switch:
- platform: mqtt
  name: kaku_a2
  state_topic: "home/OpenMQTTGateway/commands/MQTTto433"
  command_topic: "home/OpenMQTTGateway/commands/MQTTto433"
  payload_on: "16405"
  payload_off: "16404"
  qos: "0"
  retain: true

#pushbullet
notify:
- platform: pushbullet
  name: hassio
  api_key: <api_key>
```

### Mijia Thermometer BLE

```yaml
Sensor:
- platform: mqtt
  state_topic: 'home/OpenMQTTGateway/BTtoMQTT/AAAAAAAAAAAA' # MQTT topic, check MQTT messages; replace AA... with id (BLE MAC) of your device
  name: "mijia_thermometer_temperature"
  unit_of_measurement: '°C'
  value_template: '{{ value_json.tem | is_defined }}'
  expire_after: 21600 # 6 hours
- platform: mqtt
  state_topic: 'home/OpenMQTTGateway/BTtoMQTT/AAAAAAAAAAAA'
  name: "mijia_thermometer_humidity"
  unit_of_measurement: '%'
  value_template: '{{ value_json.hum | is_defined }}'
  expire_after: 21600 # 6 hours
- platform: mqtt
  state_topic: 'home/OpenMQTTGateway/BTtoMQTT/AAAAAAAAAAAA'
  name: "mijia_thermometer_battery"
  unit_of_measurement: '%'
  value_template: '{{ value_json.batt | is_defined }}'
  expire_after: 21600 # 6 hours
  ```