Home Assistant Automation Blueprint: Tradfri E1743 Switch to Light via zigbee2mqtt

tradfri_e1743_switch_to_light.yaml

blueprint:
  name: Tradfri E1743 Switch to Light via zigbee2mqtt
  description: "Updated to Z2M v2. Controls a light with a given TRADFRI on/off switch. \n\nShort Button press will toggle light for both Buttons (helpfull in darkness) \n\n Mode set to restart is mandatory for stop after long press to work."
  domain: automation
  input:
    source_switch_e1743_action:
      name: Tradfri E1743 Switch
      description: The switch-action which triggers this automation.
      selector:
        device:
          entity:
            integration: mqtt 
          filter:
            manufacturer: IKEA
            model: TRADFRI on/off switch
    target_light:
      name: Target Light
      description: the light you want to control.
      selector:
        target:
alias: Tradfri E1743 Switch to Light via z2m-v2
description: ""
trigger:
- domain: mqtt
  trigger: device
  device_id: !input source_switch_e1743_action
  type: action
  subtype: "on"
  id: "on"  
- domain: mqtt
  trigger: device
  device_id: !input source_switch_e1743_action
  type: action
  subtype: "off"
  id: "off"  
- domain: mqtt
  trigger: device
  device_id: !input source_switch_e1743_action
  type: action
  subtype: "brightness_move_up"
  id: "brightness_move_up"  
- domain: mqtt
  trigger: device
  device_id: !input source_switch_e1743_action
  type: action
  subtype: "brightness_move_down"
  id: "brightness_move_down"  
- domain: mqtt
  trigger: device
  device_id: !input source_switch_e1743_action
  type: action
  subtype: "brightness_stop"
  id: "brightness_stop"  
condition: []
action:
  - choose:
      - conditions:
          - condition: trigger
            id:
              - "on"
        sequence:
          - service: light.toggle
            data: {}
            target: !input target_light
      - conditions:
          - condition: trigger
            id:
              - "off"
        sequence:
          - service: light.toggle
            data: {}
            target: !input target_light
      - conditions:
          - condition: trigger
            id:
              - brightness_move_up
        sequence:
          - repeat:
              sequence:
                - service: light.turn_on
                  data:
                    brightness_step_pct: 5
                    transition: 0.2
                  target: !input target_light
                - delay:
                    hours: 0
                    minutes: 0
                    seconds: 0
                    milliseconds: 200
              count: 50
      - conditions:
          - condition: trigger
            id:
              - brightness_move_down
        sequence:
          - repeat:
              sequence:
                - service: light.turn_on
                  data:
                    transition: 0.2
                    brightness_step_pct: -5
                  target: !input target_light
                - delay:
                    hours: 0
                    minutes: 0
                    seconds: 0
                    milliseconds: 200
              count: 50
mode: restart

Thank you for the contribution! I also did some modifications to support E2001/E2002 with left and right color changes.
https://gist.github.com/FredrikM97/12d2a59038e24b3135aea5691d802bac

I've updated this gist as zigbee2mqtt had released v2.0 with some breaking changes. So the input selector and the triggers have been changed. And after updating you have to repair your automation and reselect the device.
see
https://github.com/Koenkk/zigbee2mqtt/releases/tag/2.0.0
https://www.zigbee2mqtt.io/guide/usage/integrations/home_assistant.html#via-mqtt-device-trigger-recommended