Shellies Discovery Gen2

This script adds MQTT discovery support for Shelly Gen2, Gen3 and Gen4 devices in the Home Assistant.

Prerequisites

This script needs Home Assistant python_script component so, if you never used it, I strongly suggest you to follow the official instruction and check that python_script is properly configured and it's working.

For the device to work with the script, it must have MQTT configured and options Enable "MQTT Control", RPC status notifications over MQTT and Generic status update over MQTT enabled.

MQTT integration must be configured in Home Assistant.

Installation

You can download shellies_discovery_gen2.py file and save it in <config>/python_scripts folder or install the script via HACS. You won't find Shellies Discovery Gen2 in the HACS Integrations section, nor add it as a custom repository. You must have a properly configured python_script component to be able to install the script from the HACS Automations section.

Shellies Discovery Gen2 will automatically install/update the script on your Shelly device. Due to python_scripts integration limitations, updating the device script requires the announce automation to run twice.

You need to manually add the shellies_announce_gen2, shellies_discovery_gen2 automations and the shellies_components_gen2 script to your automations.yaml and scripts.yaml files.

[!IMPORTANT] You cannot manually run the Shellies Discovery automation. You can only manually run the Shellies Announce automation to begin the device configuration process.

Supported devices

Gen2

• Shelly BLU Gateway
• Shelly Plus 0-10V Dimmer
• Shelly Plus 1
• Shelly Plus 1 Mini
• Shelly Plus 1PM
• Shelly Plus 1PM Mini
• Shelly Plus 2PM
• Shelly Plus Add-on
• Shelly Plus H&T
• Shelly Plus i4
• Shelly Plus Plug IT
• Shelly Plus Plug S
• Shelly Plus Plug UK
• Shelly Plus Plug US
• Shelly Plus PM Mini
• Shelly Plus RGBW PM (RGBW profile is not supported)
• Shelly Plus Smoke
• Shelly Plus Uni
• Shelly Plus Wall Dimmer
• Shelly Pro 1
• Shelly Pro 1PM
• Shelly Pro 2
• Shelly Pro 2PM
• Shelly Pro 3
• Shelly Pro 3EM
• Shelly Pro 3EM Switch Add-on
• Shelly Pro 3EM-3CT63
• Shelly Pro 3EM-400
• Shelly Pro 4PM
• Shelly Pro Dimmer 2
• Shelly Pro Dual Cover PM
• Shelly Pro EM
• Shelly Wall Display
• Shelly Wall Display X1i
• Shelly Wall Display X2

Gen3

• Shelly 1 Gen3
• Shelly 1L Gen3
• Shelly 1 Mini Gen3
• Shelly 1PM Gen3
• Shelly 1PM Mini Gen3
• Shelly 2L Gen3
• Shelly 2PM Gen3
• Shelly 3EM-63 Gen3
• Shelly AZ Plug
• Shelly BLU Gateway Gen3
• Shelly DALI Dimmer Gen3
• Shelly Dimmer 0/1-10V PM Gen3
• Shelly Dimmer Gen3
• Shelly Duo Bulb Gen3
• Shelly EM Gen3
• Shelly H&T Gen3
• Shelly i4 Gen3
• Shelly Multicolor Bulb Gen3
• Shelly Outdoor Plug S Gen3
• Shelly Plug M Gen3
• Shelly Plug PM Gen3
• Shelly Plug S Gen3
• Shelly PM Mini Gen3
• Shelly X MOD1

Gen4

• Shelly 1 Gen4
• Shelly 1 Mini Gen4
• Shelly 1PM Gen4
• Shelly 1PM Mini Gen4
• Shelly 2PM Gen4
• Shelly EM Mini Gen4
• Shelly i4 Gen4
• Shelly Flood Gen4
• Shelly Flood S Gen4
• Shelly Plug US Gen4
• Shelly Power Strip Gen4
• Shelly Presence Gen4

BLU

• Shelly BLU Button1 (via Shelly Pro or Gen3+ device)
• Shelly BLU H&T (via Shelly Pro or Gen3+ device)
• Shelly BLU H&T ZB (via Shelly Pro or Gen3+ device)
• Shelly BLU H&T Display ZB (via Shelly Pro or Gen3+ device)
• Shelly BLU Motion (via Shelly Pro or Gen3+ device)
• Shelly BLU RC Button 4 (via Shelly Pro or Gen3+ device)
• Shelly BLU RC Button 4 ZB (via Shelly Pro or Gen3+ device)
• Shelly BLU TRV (via Shelly BLU Gateway Gen3)
• Shelly BLU Wall Switch 4 (via Shelly Pro or Gen3+ device)

Powered by Shelly

• FrankEver Smart Water Valve
• LinkedGo Smart Thermostat ST1820
• LinkedGo Smart Thermostat ST802-B
• Ogemray 25A Smart Switch
• TopAC EVE01-11R

Battery powered devices

Battery powered devices like Plus H&T are put to sleep most of the time. For this reason, adding/updating entities configuration for a device should be done as follows:

• enter the device into setup mode (press the button on the device)
• manually run Shellies Announce Gen2 automation

Virtual components

Shellies Discovery supports the following virtual Shelly components:

• boolean with mode label
• boolean with mode toggle
• button
• enum with mode dropdown
• enum with mode label
• number with mode label
• number with mode slider
• text with mode label

How to debug

To debug the script add this to your logger configuration:

# configuration.yaml file
logger:
  default: error
  logs:
    homeassistant.components.python_script: debug
    homeassistant.components.automation: info
    homeassistant.components.mqtt.discovery: info

Supported platforms

• binary sensor
• button
• climate
• cover
• device trigger
• event
• fan
• light
• number
• sensor
• switch
• update

Supported features

• the device name is taken from the device configuration
• the relay name is taken from the device configuration
• the relay consumption type is taken from the device configuration (consumption type must contain light or fan to configure light or fan platform)
• if the input type is set to button, device automation triggers are available
• custom MQTT prefixes are supported

Script arguments

Configuration

# configuration.yaml file
python_script:

# automations.yaml file
- id: shellies_announce_gen2
  alias: "Shellies Announce Gen2"
  triggers:
    - trigger: homeassistant
      event: start
  variables:
    get_config_payload: "{{ {'id': 1, 'src': 'shellies_discovery', 'method': 'Shelly.GetConfig'} | to_json }}"
    device_ids:  # enter the list of device IDs (MQTT prefixes) here
      - shellyplus2pm-485519a1ff8c
      - custom-prefix/shelly-kitchen
  actions:
    - repeat:
        for_each: "{{ device_ids }}"
        sequence:
          - action: mqtt.publish
            data:
              topic: "{{ repeat.item }}/rpc"
              payload: "{{ get_config_payload }}"
          - action: script.shellies_components_gen2
            data:
              device_topic: "{{ repeat.item }}"

- id: shellies_discovery_gen2
  alias: "Shellies Discovery Gen2"
  mode: queued
  max: 50
  triggers:
    - trigger: mqtt
      topic: shellies_discovery/rpc
  actions:
    - condition: template
      value_template: "{{ 'components' not in (trigger.payload_json.result | default({})) }}"
    - action: python_script.shellies_discovery_gen2
      data:
        id: "{{ trigger.payload_json.src }}"
        device_config: "{{ trigger.payload_json.result }}"
    - condition: template
      value_template: "{{ 'mqtt' in trigger.payload_json.result }}"
    - action: mqtt.publish
      data:
        topic: "{{ trigger.payload_json.result.mqtt.topic_prefix }}/command"
        payload: "status_update"

# scripts.yaml file
shellies_components_gen2:
  alias: Shellies Components Gen2
  mode: queued
  max: 50
  fields:
    device_topic:
      description: MQTT topic prefix for the device, e.g. shellies/shelly-1-gen4-abc123
      required: true
    discovery_prefix:
      description: MQTT discovery prefix
      default: homeassistant
  sequence:
    - variables:
        device_name: "{{ device_topic.split('/') | last }}"
        src: shellies_discovery/{{ device_topic.split('/') | last }}
        response_topic: shellies_discovery/{{ device_topic.split('/') | last }}/rpc
        all_pages: []
        offset: 0
        total: 1
        device_id: "{{ device_topic.split('/') | last }}"
    - repeat:
        while:
          - condition: template
            value_template: "{{ offset < total }}"
        sequence:
          - action: mqtt.publish
            data:
              topic: "{{ device_topic }}/rpc"
              payload: "{{ {'id': 1, 'src': src, 'method': 'Shelly.GetComponents', 'params': {'include': ['config'], 'offset': offset}} | to_json }}"
          - wait_for_trigger:
              - trigger: mqtt
                topic: "{{ response_topic }}"
            timeout: "00:00:30"
          - if:
              - condition: template
                value_template: "{{ wait.trigger is none }}"
            then:
              - stop: Timeout waiting for Shelly.GetComponents from {{ device_topic }}
          - variables:
              page: "{{ wait.trigger.payload_json.result }}"
              device_id: "{{ wait.trigger.payload_json.src }}"
          - variables:
              all_pages: "{{ all_pages + [page] }}"
              offset: "{{ page.offset + (page.components | length) }}"
              total: "{{ page.total }}"
    - action: python_script.shellies_discovery_gen2
      data:
        id: "{{ device_id }}"
        device_config:
          components: "{{ all_pages }}"
        discovery_prefix: "{{ discovery_prefix }}"
    - variables:
        all_components: "{{ all_pages | map(attribute='components') | list | flatten }}"
    - variables:
        mqtt_comp: "{{ all_components | selectattr('key', 'equalto', 'mqtt') | list | first | default(none) }}"
    - condition: template
      value_template: "{{ mqtt_comp is not none }}"
    - action: mqtt.publish
      data:
        topic: "{{ mqtt_comp.config.topic_prefix }}/command"
        payload: status_update