I created statistics based helper that uses data from my simple PIR sensor. My first helper counts number of on state during last hour. It works ok.
I want to calculate also how much time during last hour sensor was on. I use helper with “Average step” for that. This one does not work as expected. Why the graph looks so strange?
Here is pure sensor history:
That is what the History Stats sensor is for.
Gaps in the graph can occur when HA is reloaded/restarted, when source sensors or devices are unavailable or unknown, or when the underlying math of the sensor produces errors (for example, division by 0).
I thought that Statistics are suitable for my case but I will try with your suggestion. After creation (in UI) as helper can I see it’s “code” somewhere? I will observe its graph now to see if it shows what I expect.
Not easily. But History Stats is not UI-only, you can still create sensors in YAML instead of using the Helper menu.
In fact I assumed that I can but hoped that even those from UI are in some config file and can be used as a base. However, they probably are stored in some database which is not so easily accessible.
Unfortunately my sensor keeps showing 0.
You absolutely have to add a state value… it’s required. For a binary sensor like your motion sensor you probably want to use on.
For the start and end time I would use the following:
Start:
{{ now() - timedelta(hour=1) }}
End:
{{ now() }}
