Hardware Support: MQTT

JMRI can connect to IOT devices via the MQTT protocol.


The default system letter is "M", so we'll use that in examples.


The current code (i.e. JMRI 4.12 and later) only supports Turnouts, and requires that the name be of the form MTtrack/turnout/ followed by a number, i.e. MTtrack/turnout/22


You tell JMRI about how to connect to your MQTT hardware via the Connections pane in the Preferences window. Select "MQTT" as the manufacturer name.