Assign dynamic sensor name from MQTT message

Configuration
,
1

I’ve got several devices that send an MQTT message on the same topic
Device1,0,0,0,0
Device2,0,0,0,0

If I had a single device, I’d have in my template file:

mqtt:
  sensor:
    - name: "Device1 Sensor 1"
      state_topic: "Topic/Status"
      value_template: "{{ value.split(',')[1] | float}}"

How can I have a dynamic name; e.g.
- name: "{{value.split(',')[0}}"

Worst case, I’m going to have something along the lines of:
[health warning - very poor pseudo code to follow!]

If {{value.split(',')[0}} = Device 1 then
    - name: "Device1 Sensor 1"
      state_topic: "Topic/Status"
      value_template: "{{ value.split(',')[1] | float}}"
Else if {{value.split(',')[0}} = Device 2 then
    - name: "Device2 Sensor 1"
      state_topic: "Topic/Status"
      value_template: "{{ value.split(',')[1] | float}}"

What would be the correct way of achieving this?

2

Create a separate sensor for each device.

mqtt:
  sensor:
    - name: "Device1 Sensor 1"
      state_topic: "Topic/Status"
      value_template: >
        {% set x = value.split(',') %}
        {{ x[1] | float(0) if '1' in x[0] else this.state }}
    - name: "Device2 Sensor 1"
      state_topic: "Topic/Status"
      value_template: >
        {% set x = value.split(',') %}
        {{ x[1] | float(0) if '2' in x[0] else this.state }}
3

Brilliant - thanks for this

1 Like
4

You’re welcome!

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