OpenMower HASS Integration (MQTT LawnMower way)

openmower.yaml

mqtt:
  - lawn_mower:
    - name: "OpenMower"
      activity_state_topic: "openmower/robot_state/json"
      activity_value_template: >-
        {% set current_state = value_json.current_state %}
        {% if current_state in ["MOWING", "DOCKING", "UNDOCKING"] %}
          mowing
        {% elif current_state in ["IDLE"] %}
          {{ "docked" if bool(value_json.is_charging) else "paused" }}
        {% else %}
          none
        {% endif %}
      start_mowing_command_topic: "openmower/action"
      start_mowing_command_template: "mower_logic:idle/start_mowing"
      dock_command_topic: "openmower/action"
      dock_command_template: "mower_logic:mowing/abort_mowing"
      pause_command_topic: "openmower/action"
      pause_command_template: "mower_logic:mowing/pause"
      json_attributes_topic: "openmower/robot_state/json"
      device:
        identifiers: openmower

This assumes that you've configured OpenMower to connect to HomeAssistant's MQTT server (which you also configured).

It's important that you keep the openmower prefix in mower_config.txt.

export OM_MQTT_ENABLE=True
export OM_MQTT_HOSTNAME="CHANGEME"
export OM_MQTT_PORT="1883"
export OM_MQTT_USER="CHANGEME"
export OM_MQTT_PASSWORD="CHANGEME"
export OM_MQTT_TOPIC_PREFIX="openmower"

I'm just getting started with HA, but I think including the position as attribute might blow up the states recorder DB: home-assistant/core#111582 (comment)

I'm just getting started with HA, but I think including the position as attribute might blow up the states recorder DB: home-assistant/core#111582 (comment)

I read some docs, it seems like that indeed all state_attr changes are logged to history, but it gets pruned every 10 days (default setting). So no harm, especially if it's temporary