Connect to an MQTT broker
Problem
You want to connect to an MQTT broker running locally.
Solution
Use the MQTT Input
input or MQTT Output
node
and an associated MQTT Config
node to connect to an MQTT broker.
Example
Flow JSON
[{"id":"2c6873d2.992abc","type":"mqtt out","z":"eda2a949.74ea98","name":"","topic":"sensors/livingroom/temp","qos":"","retain":"","broker":"407a01e4.6b637","x":330,"y":80,"wires":[]},{"id":"d9beed59.94155","type":"inject","z":"eda2a949.74ea98","name":"","topic":"","payload":"22","payloadType":"num","repeat":"","crontab":"","once":false,"x":150,"y":80,"wires":[["2c6873d2.992abc"]]},{"id":"be80048.8f232f8","type":"mqtt in","z":"eda2a949.74ea98","name":"","topic":"sensors/livingroom/temp","qos":"2","broker":"407a01e4.6b637","x":170,"y":160,"wires":[["8640b8ff.f82ff8"]]},{"id":"8640b8ff.f82ff8","type":"debug","z":"eda2a949.74ea98","name":"","active":true,"console":"false","complete":"false","x":370,"y":160,"wires":[]},{"id":"407a01e4.6b637","type":"mqtt-broker","z":"","broker":"localhost","port":"1883","clientid":"","usetls":false,"compatmode":true,"keepalive":"60","cleansession":true,"willTopic":"","willQos":"0","willPayload":"","birthTopic":"","birthQos":"0","birthPayload":""}]
Discussion
Many users will run an MQTT broker such as mosquitto on
the same Raspberry Pi or PC that Ignite is running on. Once you have an
MQTT
input or output node in your flow, you create an
MQTT Config
node by clicking on the Server
configuration
pop-up and selecting Add an MQTT broker...
. Assuming your broker is open,
set the server host to localhost
and leave the port set to 1883
.
To connect to non-local, secured brokers, other MQTT Config
node options will need to be set according to your broker's connectivity requirements.