Need help: first setup OpenHAB with RFXCom


I am complete new with OpenHAB and it is very frustrating when a (I thought) simpel setup takes so much time without any result. So, here is your opportunity to make me happy :wink:

Installing OpenHABian on my Raspberry went smoothly. I also installed the RFXCom binding. When I try to find ‘things’, the RFXcom is not detected, although it is connected to usb0. When adding manually the “RFXtrx433E USB 433.92MHz Transceiver” , OpenHAB asks me to fill in the Serial number of the RFXCOM (FTDI) device. Where can I find this number?
The RFXCom stays offline…

Regards Paul.

  • Platform information:
    • Hardware: Raspberry Pi 3 mod. B
    • OS: Debian / OpenHABian
    • openHAB version: 2.2


If I remember correct (it’s been awhile since I last did it) , you need to manually add “RFXCOM USB Transceiver” and your USB port (something like etc/TTYUSB0) needs to have dail out rights
if not yet done it, use something like “sudo usermod openhab -a -G dialout” on a CLI , openhab is the user openhab is running under (don’t know if it’s the same for OpenHABian.

There are some topic on the forum describing RFXCOM install problems.

If you are new to openhab there is a learning curve
It took me sometime, but if you understand it a bit the reward is great.

PS and ask questions in the forum

Thank you Michiel,

I already tried this, but then I get the message: "group ‘dailout’ does not exists’.

I have some additional information found:

2018-03-07 20:16:32.657 [INFO ] [ernal.connector.RFXComJD2XXConnector] - Connecting to RFXCOM device ‘0’ using JD2XX.

2018-03-07 20:16:32.663 [ERROR] [g.rfxcom.handler.RFXComBridgeHandler] - Connection to RFXCOM transceiver failed device not found (2)

Did you ever get this sorted out? I am having same issue and from the sounds of it others have too.

Yes I did and everything works fine and reliable. The problem is that I can’t give you much detail at the moment because I’m on holiday at the moment. The key to the solution is that you must -not- select the exact devicename but a generic RFX-com.

I hope this will help. Don’t get desperated or frustrated because at the and you will love openhab and RFXcom.

Can you take a look at this posting and see if you can spot anything that I am missing?