Help to Mqtt rules

[JY21]

Hi,
I just discover nod-red, and I would like to pick up a value from my domoticz server and send to espeasy with a new Mqtt topic. Can anybody help me ?

I would like now to send the reading of svalue5 to a new Mqtt topic "power" but I don't find how to do it.
Thanks for your help

[Steve-Mcl]

@JY21

I would like now to send the reading of svalue5 to a new Mqtt topic "power"

1. Connect a change node to the output of MQTT IN node
   1. Set msg.payload to msg.payload.svalue5
   2. Set msg.topic to power
2. Connect an MQTT out node to the new change node

@JY21

I just discover nod-red

The task you are doing is very basic knowledge of node-red, I recommend watching this playlist: Node-RED Essentials. The videos are done by the developers of node-red. They're nice & short and to the point. You will understand a whole lot more in about 1 hour. A small investment for a lot of gain.

[JY21]

Thanks, it works, but I need also add a node to change only this specific publication.
Maybe filter on name" Teleinfo kWh Total" or idx:59

I tried to add a switch between Mqtt in and the change node but I donn't know how to set it up.

[Steve-Mcl]

@JY21

I tried to add a switch between Mqtt in and the change node but I donn't know how to set it up

Honestly, this is very basic beginners stuff. You really should spend some time learning node-red.

[JY21]

Thank you, works fine !

Have a nice day