Depending on the gateway you would like to setup and your board, you may need extra parts/module to add.
You can take a look to the OpenMQTTGateway compatible website (opens new window) to have a view of the supported parts (opens new window).
Here is below the main parts reference.
# Main parts
|SRX882 / STX882||X||-||-||-|
|38KHz IR emitter and receiver||-||X||-||-||-|
|SX1276 / SX1278||-||-||-||X||-|
There is a wide range of parts available that may be compatible with OpenMQTTGateway, the ones listed (opens new window) are the ones tested and for which you can ask for support. Indeed for other parts we may not have it so as to reproduce the issue, or in the worst case they may not be compatible.