Homematic: Combine different values in one items

Add-ons Bindings
1

Hi there,

i´ve got different devices which provide different datapoints. For example humidity, actual temperature and set temperature.

I want to show this three values all in one line. It should be like an “combined” item with this three values.

Is this possible, somehow?

Greetings, Dominic

2

Yes that is possible. In simple words. Create a String iten that combines these values with a rule. In more deatil you will find a solution here: https://github.com/openhab/openhab/wiki/Rule-example%3A-Combining-different-items

Thomas

3

Hello Thomas,

i´ve been trying to use your approach for a couple of days now and do not have
a working solution right now.

My items look like this:

  Number  CurrentTemp "Bad4 [%s]"    
 { channel="homematic:HM-CC-TC:LiNaDo_ID:HEQ0508540:1#TEMPERATURE" }

 Number  CurrentHum "Bad5 [%s]"    
 { channel="homematic:HM-CC-TC:LiNaDo_ID:HEQ0508540:1#HUMIDITY" }
 
 Number ItemMerged

My rule is:

rule "Merge items"
when
    Item CurrentTemp updated or
    Item CurrentHum updated
then
    ItemMerged.postUpdate(CurrentTemp.state.toString + " " + CurrentHum.state.toString)
end

In the Eclipse Smarthome Designer the syntax checker tells me

"no viable alternative at input “Item” " next to the both lines starting with item.

For sure it will be just a little error - but i do not find it :frowning:
Could you help me once again?

Thanks,
Dominic