Design Pattern: Time of Last Update

[rossko57]

You have to go about it the other way.
Create your free-standing DateTime Item first, then link that to the channel.

[patrik_gfeller]

Thank you - this worked.

[airmax (Andreas)]

My motion sensor reports to a contact item. Can I have the last OPEN state with this design pattern? I guess I cannot use timestamp-update, as the motion sensor sends it’s state in regular intervals, even without change.

[trumee]

I am trying to use this design pattern for my sensor battery similar to OP. The channel is linked to the item (Battery_LastUpdate) as shown below,

You would notice that the item shows an ‘Err’ above and also does the same in Model. I dont understand this since in ‘Items’ it shows the correct date,

The item is defined like so,

[ubeaut (Greg)]

Maybe this may help?

Showing timestamp of item value update in a mainUI card?

Create a secondary item like JustinG said: [image] Select Timestamp on update or Timestamp on change. Also if you want the time to be displayed for example like this: 2021-05-31 08:17:45 Go to the item and then add metadata: [image] Add the state description: and put this in for example: %1$tY-%1$tm-%1$td %1$tH:%1$tM:%1tS [image] Then in the main UI card the code to display the formatted date for example is: =items.Doorgarage_Doorgaragelastupdate.displayState [image] [image] It wil…

[trumee]

Thanks, that did the trick.

[ubeaut (Greg)]

It is much easier with picture examples that you can adapt.
Glad it worked for you. Thanks for the like!