Documentation on how to use `sensor.leaf1niss_battery_capacity` to report charging in the energy dashboard

calamarain commented 1 month ago

Checklist

[X] I have filled out the template to the best of my ability.
[X] This only contains 1 feature request (if you have multiple feature requests, open one feature request for each feature request).
[x] This issue is not a duplicate feature request of previous feature requests.

Is your feature request related to a problem? Please describe.

Thanks a lot for writing and maintaining this integration! It would be great to use the newly available sensor.leaf1niss_battery_capacity to measure how much energy has been used to charge the car.

Describe the solution you'd like

I'm unsure how to do this, but I'm sure people with actual programming experience can think of a good solution. I suppose the documentation of this integration would be a good place to document an example.

It should increase when the car is charged, and not reset. A utility meter seems a good fit.
It should only measure increase in charge, not a decrease.
It should be togglable for when the car is charged at the energy meter connected to the HASS instance or not.

Describe alternatives you've considered

Ask on the HASS Discord, but the people there wouldn't have any context or benefit for a solution.
Ask to add a utility meter to the integration, but I'm not sure that should be part of the integration itself.
Try to create something myself.

Additional context

No additional context.

remuslazar commented 1 month ago

@calamarain this is an interesting idea but unfortunately I don't see a robust approach to implement this, at least not in the context of this integration. Why not use the info from the charging station (Wallbox) directly? All decent charging stations does have some kind of API which can be leveraged, mostly via MQTT.

calamarain commented 1 month ago

My charging station doesn't have an energy meter. Using the car's value seems like a good enough estimate for my use case, of getting insight into my home's energy use. Perhaps the best solution then is to create an automation that toggles (and resets?) a standard HASS utility meter?

Arquiteto commented 1 month ago

I think you can perfectly achieve what you described using an utility meter.

pon., 22 lip 2024, 10:04 użytkownik Remus Lazar @.***> napisał:

@calamarain https://github.com/calamarain this is an interesting idea but unfortunately I don't see a robust approach to implement this, at least not in the context of this integration. Why not use the info from the charging station (Wallbox) directly? All decent charging stations does have some kind of API which can be leveraged, mostly via MQTT.

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calamarain commented 1 month ago

That would be great. What would be required? Because the value of the utility meter should only change when the car is charging, and it should start counting up from whatever value the car has when it starts charging.

Looking at the form for creating a utility meter in HASS, it seems like the 'Periodically resetting' functionality should be used, it doesn't reset to 0, though.

Any ideas on how this could be made to work?

Addition: this is what the value from the car can look like:

Arquiteto commented 1 month ago

AFAIK as long as you don't set your utility meter to netto it will only count when the source sensor is increasing.

pon., 22 lip 2024, 11:33 użytkownik calamarain @.***> napisał:

That would be great. What would be required? Because the value of the utility meter should only change when the car is charging, and it should start counting up from whatever value the car has when it starts charging.

Looking at the form for creating a utility meter in HASS, it seems like the 'Periodically resetting' functionality should be used, it doesn't reset to 0, though. image.png (view on web) https://github.com/user-attachments/assets/7b970b06-f50b-4a73-a711-4daabd94140e Any ideas on how this could be made to work?

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calamarain commented 1 month ago

Ok. So what would a utility meter do if the input resets to a value > 0?

Arquiteto commented 1 month ago

Remain constant

pon., 22 lip 2024, 13:09 użytkownik calamarain @.***> napisał:

Ok. So what would a utility meter do if the input resets to a value > 0?

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calamarain commented 1 month ago

A solution is to create a utility meter with these settings:

Net consumption: disabled
Delta values: disabled
Periodically resetting: enabled
Sensor always available: enabled

If you like the utility meter to only measure conditionally, create two tariffs, e.g., 'on' and 'off'. I used this to only measure when my charge point at home is charging.

remuslazar / homeassistant-carwings