I’ve looked all over so hopefully I’m not missing this feature somewhere. I would like to see an ability to add a “marker” to the history that can be displayed along with any of the other history views.
For example, I have an ESPHome in my RV monitoring temperature and humidity. I placed a dehumidifier out there and would like to be able to click a button to add a note to the history marking when I turned the dehumidifier on. That way I can better see how things have changed since that moment.
This does look like a solution to accomplish what my example. In my case the dehumidifier is “dumb” and not connected to HA, but I could accomplish this with a virtual switch.
Personally I think it would still be nice to have an easy way to add an arbitrary, timestamped note to the history table.
Did you ever find a good solution for this? I actually want to do something similar that couldn’t be solved with a simple on/off toggle.
I’m tracking noise levels with a sound level meter and want to annotate a graph with what kinds of things were happening at the time – traffic, gardeners, mainteance work, etc. I can keep the list of events elsewhere if necessary, but getting it into a graph in HA would be really nice.