I want to read the temperature from usb-dongle (gateway-usb-dongle firmware), but the dongle is not publishing it to mqtt. Am I doing something wrong or it is usual behaviour and i need to change the firmware to see the temperature?
Dongle does not have temperature sensor or accelerometer like the Core Module has.
If you really need this, you can use Core Module as a radio gateway and add the temperature sensor code which will send measured values.
I am sorry, my mistake I should have checked that.
So the minimum temperature setup would be a hub with core module over usb.