Automation based on part of MQTT payload

Configuration
1

Hi,

I have a Sonoff RF Bridge and a couple of simple RF devices. Could somebody help a beginner with creating automations based on the “Data:xxx” part of the payload? Preferably in the visual editor.

I created the automation for the topic, I’m just failing to figure out how to filter based on the different payloads.

Many thanks

2

Post the automation you created (in YAML format).

If your automation is using an MQTT Trigger, then in all likelihood, you will need to use a template like this:

{{ trigger.payload_json.RfReceived.Data }}
3

Hi Taras,

I don’t really have an automation yet. I have a simple sonoff RF door sensor, it sends the following when opened:

MQT: tele/tasmota_01E1D2/RESULT = {“Time”:“2023-03-13T12:18:02”,“RfReceived”:{“Sync”:8000,“Low”:200,“High”:710,“Data”:“EAC701”,“RfKey”:“None”}}

I would like to use this as trigger for automations. “IF message containing “EAC701” received, THEN do x”

I hoped that it would be possible to use wildcards in the payload field like EAC701 but that doesn’t seem to work.

Many thanks

4 
  trigger:
    - platform: mqtt
      topic: "tele/tasmota_01E1D2/RESULT"
      payload: "EAC701"
      value_template: "{{ value_json.RfReceived.Data }}"

Reference: MQTT Trigger

1 Like
5

Thanks it’s working!

It’s a pity that it can’t be done in the visual editor.

1 Like
6

Hi, sorry to bring up an old topic. I have a similar issue, I’ve tried the solution here but get no response.
MQTT String: 20;21;EV1527;ID=0daed6;SWITCH=09;CMD=ON;

The first two segments (20;21;) change with every transmission recieved.

I have a Button helper I want pushed when ever this device (I have multiple and want to be able to tell them apart) sends a pulse.

The “ID=0daed6” is unique to each so I’m trying to respond to that segment of the string response.

  • id: ‘1699695316161’
    alias: Motion sensor 1
    description: ‘’
    trigger:
    • platform: mqtt
      topic: /ESP00/msg
      payload: “ID=0daed6”
      value_template: “{{ value_json.RfReceived.Data }}”
      condition:
      action:
    • service: button.press
      data: {}
      target:
      entity_id: input_boolean.motion_detected
      mode: single

I’ve tried putting the topic in quotes, using different bits of the recieved payload and doing a full reboot after each change to no avail.

I’m open to any suggestions.
Thanks

7

Manged to split the string into segments using this example:

Which gives me subtopics that I can monitor for the specific device. Not everything reports properly but I get out what I need so I’m happy.

My current code:
alias: RFLINK32 String Split
description: ‘’
trigger:
platform: mqtt
topic: /ESP00/msg
action:

  • variables:
    data: ‘{{ trigger.payload[5:-1].split(’‘;’‘) }}’
    item:
    • counter1
    • DeviceType
    • DeviceID
    • Switch
    • State
    • Unknown
  • repeat:
    count: ‘{{ item | length }}’
    sequence:
    • service: mqtt.publish
      data:
      topic: /ESP00/msg/{{item[repeat.index-1]}}
      payload: ‘{{data[repeat.index-1]}}’