@staffan Hi, Did you check the user manual file? available on download section?
If your MySensors gateway is USB, select as follows,
Tx message processing delay: Transmission delay between on each message from MyController to this gateway to avoid the collision on MySensors network.
Driver: Keep it as Auto
Port name: default /dev/ttyUSB0
Baud rate: default 115200
Retry frequency: For some reason, if your gateway goes down. MyController attempt to reconnect every X seconds once.
Connect your gateway on RPI USB port, run this command to know your USB port name: ls -lh /dev/ttyUSB*
Once you setup the gateway on MyController, your gateway should show UP.
now click on Action button on gateway and select Discover, [Note: You should have added about your node data on presentation() block of your node code.]
.
Now you can see your gateway and nodes on MyController.