Publishing Data Stream from Node-Red Manual

Configure MQTT in Node-RED:

From the nodes in the left navigation bar, drag and drop the output mqtt node.

Double click on mqtt node, click on the pencil/edit button and set these parameters to configure the connection:

• Connection Tab Parameters:

• Security Tab Parameters:

After the configuration is done, press the ADD

Once it has been added, click DONE.

Publish a Data Stream from Node-RED:

• Drag and drop an inject node.

• Drag and drop a function node.

• Connect the inject to function to mqtt node, respectively.

• Double-tap the function node and write this code:

msg.topic = "YOUR-DATA-STREAM-MQTT-TOPIC";
msg.payload = 
{
    "data": "Data from sensor",
    "data_stream_id": "YOUR-DEVICE-DATA-STREAM-ID",
    "client_id": "YOUR-DEVICE-CLIENT-ID"
}
return msg;

• From the top right corner of Node-RED, tap Deploy.

• Tap the button of the inject node and you should receive a data stream.