I have a sensor here that sends error messages via MQTT if the reading process did not work. I have mapped this MQTT topic to an item, i.e. the item value persists the error messages as a string.
Is there a way to display a list to show the last, say, 20 entries of an item, similar to a log file?
AFAIK there’s no equivalent to a graph with string item ootb within OH core.
You could write some widget, which then queries the persistence and visualize the results somehow. …but I don’t think, there’s a already available “User Interface” on the marketplace.
