Anyone have any clever ideas of how to show times of last updates for a set of devices? In my case, I'm trying to do this for a set of battery-operated devices (motion sensors) that don't reliably report battery level.
I've was messing around trying to use using grafana template variables to auto-create a bunch of singlestat panels, and using the "time of last point" stat option from single stat, with units of date & time > from now. This sort of works. I can get it to display times like "15 minutes ago". However, I ran into problems of not being able to use any value mappings. The still bigger problem is that it seemed that Grafana Home Dashboard has a "minimum update frequency" setting that was making it so the timestamp of the last update was different from the last time Indigo actually received an update from the device.
So I could try setting minimum update frequency to zero, but I suspect that will probably come back to bite me by breaking some of my other graphs.
In Indigo, I can see that the "Last Updated" field has the data I'm interested in, but when I use Plugins>Grafana Home Dashboard>Explore Device this field doesn't even show up, so I presume it is handled "specially" by the plugin. Conceptually, I can see why it might have been omitted - it shouldn't really be needed. So I supposed I could try
I'm hoping others may have some clever ideas.