MQTT Switch for Node Red Control

Third party integrations Node-RED
1

Hi

I keep seeing on the forums to create a simple MQTT switch to plug into Node Red to enable/disable certain flows. Eg using the Traffic Node.

If you do this could you please show me your config yaml for the MQTT switch. I’m just not sure if I have it set correctly.

This is what I have. But the output in node red is on or off.

  • platform: mqtt
    name: “Node Red Stop Go Switch”
    command_topic: “switch/nodered/set”
    payload_on: “enable”
    payload_off: “disable”
    retain: false

Regards

2

Update:

These switches can pass on the payload I want.

However, there is no state with this setup.

Is there a setting to show feedback from node red if it is on/off or True/False or engaged/disengade.

Which ever payload I have sent,

3

I would recommend using an input_boolean in Home Assistant.

4

Thanks, however, I wonder if there is a way to create a global or flow wide variable that stores a virtual state that updates on changing the payload.

5

Found a very simple solution

I just published to the state topic via mqtt.

6

would you mind sharing how?

7

Things have changed so much since then, for example the ability to expose switches from Node Red to HA simplifies all this.