Prerequisites

You need one or more Garden Smart system devices : https://www.gardena.com/int/products/smart/
A developper application to access gardena API : https://developer.husqvarnagroup.cloud/docs/get-started
This application needs to be connected to Authentication API AND GARDENA smart system API like this :
("Create application" button -> Fill In Name only -> "Create" button -> "+Connect new API" button -> Add both API)

This image uses the new Gardena API which allows to be informed immediately when an event occurs on any Smart System device.

How does it work

How-to

Install

For Docker, run it by executing the following commmand:

docker run \
    -d \
    --name gardena2mqtt \
    --restart=always \
    -e GARDENA_USER="GardenaUserName" \
    -e GARDENA_PASSWORD="GardenaPassword" \
    -e GARDENA_APIKEY="GardenaApiKey" \
    -e HOST="192.168.1.x" \
    -e PORT=1883 \
    -e PREFIX="gardena2mqtt" \
    -e CLIENTID="gardena2mqttclid" \
    -e USER="usr" \
    -e PASSWORD="pass" \
    domochip/gardena2mqtt

For Docker-Compose, use the following yaml:

version: '3'
services:
  gardena2mqtt:
    container_name: gardena2mqtt
    image: domochip/gardena2mqtt
    environment:
    - GARDENA_USER=GardenaUserName
    - GARDENA_PASSWORD=GardenaPassword
    - GARDENA_APIKEY=GardenaApiKey
    - HOST=192.168.1.x
    - PORT=1883
    - PREFIX=gardena2mqtt
    - CLIENTID=gardena2mqttclid
    - USER=mqtt_username
    - PASSWORD=mqtt_password
    restart: always

Configure

Parameters explanation

Environment variables

GARDENA_USER: Gardena username (it's an email address)
GARDENA_PASSWORD: Gardena password
GARDENA_APIKEY: Gardena Application key you got at https://developer.husqvarnagroup.cloud/applications
HOST: IP address or hostname of your MQTT broker
PORT: Optional, port of your MQTT broker
PREFIX: Optional, prefix used in topics for subscribe/publish
CLIENTID: Optional, MQTT client id to use
USER: Optional, MQTT username
PASSWORD: Optional, MQTT password

Topics

gardena2mqtt status

Status of gardena2mqtt is published to the topic gardena2mqtt/connected using the following payload:

0: disconnected
1: connected to MQTT only
2: connected to MQTT AND to Gardena Smart System Cloud

Devices state

Devices informations and state are published to individual topics following this scheme: gardena2mqtt/Location/Device

ex : gardena2mqtt/MyGarden/MySileno

Devices informations are published when:

gardena2mqtt starts
reconnects to Gardena or to the MQTT broker
whenever an update is sent by Gardena

Device control

You can control your Gardena devices by sending command (JSON format) to the control topic of each device: gardena2mqtt/Location/Device/control And receive command execution result on: gardena2mqtt/Location/Device/result

ex : gardena2mqtt/MyGarden/MySileno/control gardena2mqtt/MyGarden/MySileno/result

Mower

{"command":"start_seconds_to_override", "duration":3600}: Manual operation (duration is seconds and must be positive multiple of 60)
{"command":"start_dont_override", "duration":3600}: Automatic operation.
{"command":"park_until_next_task"}: Cancel the current operation and return to charging station.
{"command":"park_until_further_notice"}: Cancel the current operation, return to charging station, ignore schedule.

Power Socket

{"command":"start_seconds_to_override", "duration":3600}: Manual operation (duration is seconds and must be positive multiple of 60)
{"command":"start_override"}: Manual'on'
{"command":"stop_until_next_task"}: Immediately switch 'off', continue with the schedule.
{"command":"pause"}: Skip automatic operation until specified time. The currently active operation will NOT be cancelled.
{"command":"unpause"}: Restore automatic operation if it was paused.

Smart Irrigation Control (Valve Set)

{"command":"start_seconds_to_override", "duration":3600, "valve_id":"id"}: Manual operation (duration is seconds and must be positive multiple of 60)
{"command":"stop_until_next_task", "valve_id":"id"}: Cancel the current watering, continue with the schedule.
{"command":"pause", "valve_id":"id"}: Skip automatic operation until specified time. The currently active operation might or might not be cancelled (depends on device model).
{"command":"unpause", "valve_id":"id"}: Restore automatic operation if it was paused.

Water Control (Valve)

{"command":"start_seconds_to_override", "duration":3600}: Manual operation (duration is seconds and must be positive multiple of 60)
{"command":"stop_until_next_task"}: Cancel the current watering, continue with the schedule.
{"command":"pause"}: Skip automatic operation until specified time. The currently active operation might or might not be cancelled (depends on device model).
{"command":"unpause"}: Restore automatic operation if it was paused.

Troubleshoot

Logs

You need to have a look at logs using :
docker logs gardena2mqtt

Updating

To update to the latest Docker image:

docker stop gardena2mqtt
docker rm gardena2mqtt
docker rmi domochip/gardena2mqtt
# Now run the container again, Docker will automatically pull the latest image.

Ref/Thanks

Many thanks to py-smart-gardena which the library used to build this project : https://github.com/py-smart-gardena/py-smart-gardena

Domochip/gardena2mqtt