Add MQTT lawn mower platform (#28663)

* Add MQTT lawn mower platform

* Use separate command topics and templates

* Tiny tweaks

* refrase

* Refrase

* Final version

---------

Co-authored-by: c0ffeeca7 <38767475+c0ffeeca7@users.noreply.github.com>
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---
title: "MQTT Lawn Mower"
description: "Instructions on how to integrate MQTT lawn mowers into Home Assistant."
ha_category:
- Lawn Mower
ha_release: 2023.9
ha_iot_class: Configurable
ha_domain: mqtt
---
The `mqtt` `lawn_mower` platform allows controlling a lawn mower over MQTT.
## Configuration
To enable MQTT Lawn Mower in your installation, add the following to your `configuration.yaml` file:
```yaml
# Example configuration.yaml entry
mqtt:
- lawn_mower:
command_topic: topic
name: "Test Lawn Mower"
```
{% configuration %}
activity_state_topic:
description: The MQTT topic subscribed to receive an update of the activity. Valid activities are `mowing`, `paused`, `docked`, and `error`. Use `value_template` to extract the activity state from a custom payload. When payload `none` is received, the activity state will be reset to `unknown`.
required: false
type: string
activity_value_template:
description: "Defines a [template](/docs/configuration/templating/#using-templates-with-the-mqtt-integration) to extract the value."
required: false
type: template
availability:
description: A list of MQTT topics subscribed to receive availability (online/offline) updates. Must not be used together with `availability_topic`.
required: false
type: list
keys:
payload_available:
description: The payload that represents the available state.
required: false
type: string
default: online
payload_not_available:
description: The payload that represents the unavailable state.
required: false
type: string
default: offline
topic:
description: An MQTT topic subscribed to receive availability (online/offline) updates.
required: true
type: string
value_template:
description: "Defines a [template](/docs/configuration/templating/#using-templates-with-the-mqtt-integration) to extract the device's availability from the `topic`. To determine the device's availability, the result of this template will be compared to `payload_available` and `payload_not_available`."
required: false
type: template
availability_topic:
description: The MQTT topic subscribed to receive availability (online/offline) updates. Must not be used together with `availability`.
required: false
type: string
availability_mode:
description: When `availability` is configured, this controls the conditions needed to set the entity to `available`. Valid entries are `all`, `any`, and `latest`. If set to `all`, `payload_available` must be received on all configured availability topics before the entity is marked as online. If set to `any`, `payload_available` must be received on at least one configured availability topic before the entity is marked as online. If set to `latest`, the last `payload_available` or `payload_not_available` received on any configured availability topic controls the availability.
required: false
type: string
default: latest
availability_template:
description: "Defines a [template](/docs/configuration/templating/#using-templates-with-the-mqtt-integration) to extract device's availability from the `availability_topic`. To determine the devices's availability, the result of this template will be compared to `payload_available` and `payload_not_available`."
required: false
type: template
device:
description: "Information about the device this lawn mower is a part of to tie it into the [device registry](https://developers.home-assistant.io/docs/en/device_registry_index.html). Only works when the [`unique_id`](#unique_id) is set. At least one of the identifiers or connections must be present to identify the device."
required: false
type: map
keys:
configuration_url:
description: 'A link to the webpage that can manage the configuration of this device. Can be either an `http://`, `https://`, or an internal `homeassistant://` URL.'
required: false
type: string
connections:
description: 'A list of connections of the device to the outside world as a list of tuples `[connection_type, connection_identifier]`. For example, the MAC address of a network interface: `"connections": ["mac", "02:5b:26:a8:dc:12"]`.'
required: false
type: list
hw_version:
description: The hardware version of the device.
required: false
type: string
identifiers:
description: 'A list of IDs that uniquely identify the device. For example, a serial number.'
required: false
type: [list, string]
manufacturer:
description: The manufacturer of the device.
required: false
type: string
model:
description: The model of the device.
required: false
type: string
name:
description: The name of the device.
required: false
type: string
suggested_area:
description: 'Suggest an area if the device isnt in one yet.'
required: false
type: string
sw_version:
description: The firmware version of the device.
required: false
type: string
via_device:
description: 'Identifier of a device that routes messages between this device and Home Assistant. Examples of such devices are hubs or parent devices of a sub-device. This is used to show the device topology in Home Assistant.'
required: false
type: string
dock_command_template:
description: Defines a [template](/docs/configuration/templating/#using-templates-with-the-mqtt-integration) to generate the payload to send to `dock_command_topic`. The `value` parameter in the template will be set to `dock`.
required: false
type: template
dock_command_topic:
description: The MQTT topic that publishes commands when the service `lawn_mower.dock` service call is executed. The value `dock` is published when the service is called. Use a `dock_command_template` to publish a custom format.
required: false
type: string
enabled_by_default:
description: Flag which defines if the entity should be enabled when first added.
required: false
type: boolean
default: true
encoding:
description: The encoding of the payloads received and published messages. Set to `""` to disable decoding of the incoming payload.
required: false
type: string
default: "utf-8"
entity_category:
description: The [category](https://developers.home-assistant.io/docs/core/entity#generic-properties) of the entity.
required: false
type: string
default: None
icon:
description: "[Icon](/docs/configuration/customizing-devices/#icon) for the entity."
required: false
type: icon
json_attributes_template:
description: "Defines a [template](/docs/configuration/templating/#using-templates-with-the-mqtt-integration) to extract the JSON dictionary from messages received on the `json_attributes_topic`."
required: false
type: template
json_attributes_topic:
description: The MQTT topic subscribed to receive a JSON dictionary payload and then set as entity attributes. Implies `force_update` of the current activity state when a message is received on this topic.
required: false
type: string
name:
description: The name of the lawn mower. Can be set to `null` if only the device name is relevant.
required: false
type: string
object_id:
description: Used instead of `name` for automatic generation of `entity_id`
required: false
type: string
optimistic:
description: Flag that defines if the lawn mower works in optimistic mode.
required: false
type: boolean
default: "`true` if no `state_topic` defined, else `false`."
pause_command_template:
description: Defines a [template](/docs/configuration/templating/#using-templates-with-the-mqtt-integration) to generate the payload to send to `pause_command_topic`. The `value` parameter in the template will be set to `pause`.
required: false
type: template
pause_command_topic:
description: The MQTT topic that publishes commands when the service `lawn_mower.pause` service call is executed. The value `pause` is published when the service is called. Use a `pause_command_template` to publish a custom format.
required: false
type: string
qos:
description: The maximum QoS level to be used when receiving and publishing messages.
required: false
type: integer
default: 0
start_mowing_template:
description: Defines a [template](/docs/configuration/templating/#using-templates-with-the-mqtt-integration) to generate the payload to send to `dock_command_topic`. The `value` parameter in the template will be set to `dock`.
required: false
type: template
start_mowing_command_topic:
description: The MQTT topic that publishes commands when the service `lawn_mower.start_mowing` service call is executed. The value `start_mowing` is published when the service is called. Use a `start_mowing_command_template` to publish a custom format.
required: false
type: string
retain:
description: If the published message should have the retain flag on or not.
required: false
type: boolean
default: false
unique_id:
description: An ID that uniquely identifies this lawn mower. If two lawn mowers have the same unique ID, Home Assistant will raise an exception.
required: false
type: string
{% endconfiguration %}
<div class='note warning'>
Make sure that your topic matches exactly. `some-topic/` and `some-topic` are different topics.
</div>
## Example
The example below shows how to use a single command topic with a command template.
{% raw %}
```yaml
# Example configuration.yaml entry
mqtt:
- alarm_control_panel:
name: "Lawn Mower Plus"
activity_state_topic: "lawn_mower_plus/state"
activity_value_template: "{{ value_json.activity }}"
pause_command_topic: "lawn_mower_plus/set"
pause_command_template: '{"activity": "{{ value }}"}'
dock_command_topic: "lawn_mower_plus/set"
dock_command_template: '{"activity": "{{ value }}"}'
start_mowing_command_topic: "lawn_mower_plus/set"
start_mowing_command_template: '{"activity": "{{ value }}"}'
```
{% endraw %}

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@ -227,6 +227,7 @@ The discovery of MQTT devices will enable one to use MQTT devices with only mini
- [Humidifier](/integrations/humidifier.mqtt/)
- [Image](/integrations/image.mqtt/)
- [Climate/HVAC](/integrations/climate.mqtt/)
- [Lawn Mower](/integrations/lawn_mower.mqtt/)
- [Light](/integrations/light.mqtt/)
- [Lock](/integrations/lock.mqtt/)
- [Number](/integrations/number.mqtt/)
@ -797,6 +798,7 @@ mqtt:
- [Humidifier](/integrations/humidifier.mqtt/)
- [Image](/integrations/imahe.mqtt/)
- [Climate/HVACs](/integrations/climate.mqtt/)
- [Lawn Mower](/integrations/lawn_mower.mqtt/)
- [Light](/integrations/light.mqtt/)
- [Lock](/integrations/lock.mqtt/)
- [Number](/integrations/number.mqtt/)