@timo
Thanks, I will go on with the mqtt bridge but to be honest, the Entry for a beginner is huge - and I am from it sector, so no complete noob, only regarding to Linux ;)

Hello guys,

I'm totally lost during the installation process and I really hope you can guide me the way.

Honestly, I read several installation guides and several tutorials but none of them seem to work - maybe I'm doing something very "common" stuff wrong, because I'm not a Linux guy.

I first followed the instructions to build 2 Arduinos with nRF radio chips.
One will be my gateway, one will be my "sensor" guy.

The gateway is attached via USB-cable directly to my Raspi, hosting Openhab2.
The communication between Sensor-Arduino and Gateway seem to work, at least I get stable output from the Arduino-Com-Console.

What I want to do now is to "introduce" my Gateway to openhab2 - and I'm completely lost now :(
I tried the guide "https://forum.mysensors.org/topic/1194/tutorial-openhab-with-serial-gateway", added the item to my sitemap and it states "-", so no data available.
I tried to check the logs of openhab2 but they seem to be not updated for one month (even after several restarts) - my other items I control with Openhab2 are working (Z-Wave-Stick controlled).

So the first step I fail at is
"Start up openHAB with "/opt/openhab/start.sh". You should see something like:
2015-04-02 20:05:30.731 [INFO ] [runtime.busevents ] - Arduino state updated to 0;0;3;0;14;Gateway startup complete."

What do I have to do exactly after I connected the Arduino gateway via USB?

BR,
kreisch