Template sensor that increase by a fixed value periodically

Configuration
,
1

Hello I’ll explain my problem and sorry if it’s easier than it seems to me.
I can’t have a smart gas meter so I created one virtually.
I have a sensor that activates when the boiler turns on and, as an approximation, I was able to calculate the average gas consumption in m3 per hour. Creating a template with the gas consumption was easy.
However, I would like to add the gas consumption of the kitchen burners (the boiler obviously doesn’t turn on).
Again as an approximation, I calculated that I consume about 0.2 m3 of gas for cooking per day.
How can I create a sensor that every day, at a specific time (say at 12h) increases by a fixed value?
So even in the consumption graph I would have the consumption in the kitchen at the right time.
Thanks in advance

2

I think I would create a helper → template → sensor
in that I would make the value something like this

{% set test = now().strftime('%H%M')  %}
{{ 2222.222/60 |float if test in ["1607", "1807"] else 0 }}

where 2222.22…/60 is the value you want to add divided appropriately for the time period (1min)
1607… is the time it should be applied, make it “1200” for noon (or i set it so you can have multiple times like “1807” so you can put in more than one point during the day… maybe you cook in the evening as well ? add with a comma remove as needed )

I think you should make it a measurement and relate it to gas and the appropriate units you use for the boiler.

not sure about the graph but i think if you put them stacking it will show the total … but if you want the total I think you would need another sensor that sums all the sensors.

someone probably has a better way. but I think that this would likely get you what you after

1 Like
3

Thanks for your help Patrch. I’ll try to implement this template for my purposes. In case of doubt i’ll ask.

4

I don’t understand the proposed solution. It doesn’t correspond to what the OP is asking in the quoted text at all, as far as I can tell.

If you literally want a sensor that increases by a fixed value every day at a particular time, the best bet is probably a trigger-based sensor:

- trigger:
    - platform:  time_pattern
      # In this exampe, the sensor will increase by fixed_val at noon every day
      hours: "12"

    action:
      - variables:
          # fixed_val is the amount by which you want to increase
          fixed_val: 1
          current_val: " {{ states('ENTITY_ID_HERE') | float(0) }} "

    sensor:
      # Define your name/unique_id/etc here
      - name: "My sensor"
        state: " {{ (current_val + fixed_val) | float }}"
1 Like
5

Thanks for the idea, instinctively I too had thought of a trigger sensor.
I just have one doubt though:

    action:
      - variables:
          # fixed_val is the amount by which you want to increase
          fixed_val: 1
          current_val: " {{ states('ENTITY_ID_HERE') | float(0) }} "

It’s not clear to me what kind of entity i have to choose for current_val variable.
I have to create an entity from scratch or an existing entity. I did some tests in developers Tools models and it says:
Undefined Error: current_val is undefined
both if I put an entity ID already created or from scratch…

Thanks in advance

6

I tested and confirmed the following example works.

  - trigger:
      - platform: time
        at: '12:00:00'
    sensor:
      - name: Gas Consumption
        unique_id: gas_consumption_abc123
        state: "{{ this.state | float(0) + 0.2 }}"
        device_class: gas
        unit_of_measurement: 'm³'

The initial value will be unknown. It will change to 0.2 the first time it triggers at 12:00:00. It increments its value by 0.2 every time the trigger fires.

1 Like
7

Solved.Thanks to everybody.

1 Like