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openHABian will install openHAB 4 and Java 17 by default.openHAB 2 will continue to work on openHABian, but openHAB 2 support is no longer maintained.If you need openHAB 2 support please use the legacy branch of openHABian.You can switch branches using menu option 01 in openhabian-config but ATTENTION you cannot up- or downgrade this way and you cannot arbitrarily change versions.There's a high risk you mess up your system if you do.

The openHABian image will install openHAB 4 by default, to have it install openHAB 2 or 3 right from the beginning, set clonebranch=legacy or clonebranch=openHAB3 in openhabian.conf before first boot.

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For openHABian users still running openHAB 2.X, openhabian-config offers to migrate the openHABian environment and install current openHAB for you.using menu option 42. Beware you cannot downgrade again.

*What you must not do, though, is to mess with the system, OS packages and config and expect anyone to help you with that. Let's clearly state this as well: when you deliberately decide to make manual changes to the OS software packages and configuration (i.e. outside of openhabian-config), you will be on your own.Your setup is untested, and no-one but you knows about your changes. openHABian maintainers are really committed to providing you with a fine user experience, but this takes enormous efforts in testing and is only possible with a fixed set of hardware. You don't get to see this as a user.

Plugging in HATs like an UPS or USB sticks or even SSDs for storage is fine, but we do not support attaching any hardware if that requires any sort of software or configuration changes on the OS part of openHABian.To put it straight: we don't recommend SSDs and do not support attaching an SSD and move the system over there.If you know Linux well enough to manually apply all the required modifications, feel free to do so but please be aware that this is a completely untested option that may work or not and what's even more important: it is unsupported. Don't ask for help if you run into trouble.Also remember that any future changes to openHABian (which is what you get when you upgrade as you are recommended to do on every start of the openhabian-config tool) can interfere with any such modification of yours so while any such mod may work for the time being you apply it, it may break your box and openHAB experience anytime in the future.

When you boot a flashed image for the first time, openHABian will setup and use the Ethernet port if that one is connected with a cable to your LAN.It'll also use the wifi_ssid and wifi_password parameters from /etc/openhabian.conf to determine whether and how to setup the Wi-Fi interface.After these stages it checks for connectivity to the Internet and if that fails, it'll open a Wi-Fi hotspot that lets you manually connect your system to a WLAN (Wi-Fi) of yours to jumpstart networking.Remember that once the hotspot is started, it'll hide once you have successfully used it to connect your Wi-Fi interface but it'll return should your Wi-Fi connectivity break down.

When openHABian has installed and configured your openHAB system, you can start to use it right away.Connect to your Raspberry Pi SSH console (opens new window) using the username openhabian and password openhabian.You should be seeing a welcome screen like the following:

We strongly recommend you to use the automated install but you actually can walk through the interactive tool.Start openhabian-config.Get the bare minimum you will need installed by selecting menu option 03.To install the recommended components that automated install will get in one go select menu options 33, 32, 31, 11, 12, 15, OpenJDK 11 (in menu option 45), 13, 16, 14, 21, 38, 53, 52.Take care this listing may be outdated. We try to make install options independent of each other but there may be dependencies left we are not aware of so any other order may or may not work.

If you own a RPi3, RPi3+, RPi4, a RPi0W or any other model with a compatible Wi-Fi dongle you can set up and use openHABian via Wi-Fi only.For the Wi-Fi based setup to work, you'll need to make your SSID and password known to the system before the first boot.So in addition to the setup instructions given above, uncomment and complete the lines reading wifi_ssid="" and wifi_password="" in openhabian.conf.

When your openHABian box does not get Internet connectivity through either Ethernet or WI-Fi (if configured), openHABian will launch a Hotspot.Use your mobile phone to scan for Wi-Fi networks, you should be seeing a new network called openHABian- with being a digit.Connecting will work without a password. Once connected, most smartphones will transfer you to a web page.If this does not happen on your mobile device, open your browser on the mobile and point it at or -.This may or may not work for your mobile browser as it requires Bonjour/ZeroConf abilities.If you cannot connect to this address, go to that page you can select the SSID of the network you want to connect your system to.Provide the password and press the button.Note that as soon as you do, the wlan0 IP address of your system changes so your mobile browser will not be able to provide you any feedback if that worked out.Try to ping the new system's hostname (default is openhabian) or check DHCP on your router if your openHABian system appeared there.You can use sudo comitup-cli inside openHABian to change networks and eventually remove network credentials.Note the hotspot may not only become available during installation: it will remain on standby and will show up again every time your wlan0 interface is losing connectivity.For more information on hotspot functions see comitup-cli (opens new window). Most behavior can be tweaked by setting parameters (such as a default password) in /etc/comitup.conf.The hotspot feature is known to work on RPi0W, RPi3, and RPi4 but is known to often expose problems with Wi-Fi USB adapters.

See Troubleshooting section if you run into trouble installing.If you want to turn on debug mode edit openhabian.conf and set the debugmode= parameter to either off, on or maximum.Mind you that if you intend to open an issue, we need you to provide the output of debugmode=maximum so if you're in interactive mode, set your terminal to record output.

Auto backup is a marketing name for two distinct features that you can deploy in one go at unattended installation time on a RPi (when you deploy the image).Technically it is a "low-cost" version of disk mirroring PLUS the setup of the Amanda backup system which all by itself has been available in a long time.So don't let the name confuse you. If you didn't choose to set this up at installation time, you can also individually select these functions via openhabian-config menu options 53 (mirroring) and 52 (Amanda).Note mirroring is untested (and hardly makes sense to deploy) if you don't run RPi hardware while Amanda is known to work on a lot of other hardware and is well meant to be used as the backup system there as well.

Tailscale is a management toolset to establish a WireGuard based VPN between multiple systems if you want to connect to openHAB(ian) instances outside your LAN over Internet.It'll take care to detect and open ports when you and your peers are located behind firewalls.Download the client (opens new window) and eventually get the Solo service plan from Tailscale, that's free for private use and will automatically be selected when you fire up your first VPN node.The Windows client has a link to the admin console where you can create pre-auth one-time keys.These you can put as the preauthkey into openhabian.conf to automatically deploy remote openHABian nodes (unattended install) and have them join the VPN.The tstags option allows you to specify tags for use in Tailscale ACL (opens new window) definition.

You might encounter problems when you make use of IPv6 on some networks and systems. openHABian installation may stop or hang forever.In that case or if you are sure that you do not need IPv6 on your openHABian server, you can disable IPv6.Follow the instructions in the previous section and insert a line into openhabian.conf reading ipv6=disable.

If to install openHABian fails because you have a non-supported hardware or run an unsupported OS release, you can "fake" your hardware and OS to make openHABian behave as if you did own that HW/OS.In openhabian.conf, uncomment and complete the lines reading hw=, hwarch= and/or osrelease= with the hw and os versions you want to attempt installation with.

If you're having problems with getting openHABian to install properly, check out the debug guide. It's also available on your system as /opt/openhabian/docs/openhabian-DEBUG.md.You can ask for help on the openHABian community forum (opens new window) when the debug guide doesn't help but please first, read and mind the rules (opens new window).

Official announcements are displayed on starting openhabian-config and stored in NEWS.md (a file in /opt/openhabian).Release notes are also co-located with the download links here (opens new window).If you want to stay in touch with all the latest code changes under the hood, see commit history (opens new window) for openHABian.You'll also see commits "fly by" when executing the "Update" function within the openHABian Configuration Tool.

Watch the progress on the console or the web interface at :81/ (opens new window) or (opens new window) if that name has become available.Double-check the IP address and name with your router while you wait.If there is absolutely no output for more than 10 minutes, your installation has failed in the first initialization phase.There probably is a problem with the way your router or local network are setup.Read on in the Troubleshooting section or move on to the DEBUG guide.You can set debugmode=maximum in openhabian.conf right on first install, too, to get to see what openHABian is doing

openHABian installs the latest release build of openHAB.The standard openHABian openHAB and main branches will install the new openHAB version 4 and the old openHAB3 and legacy branches will install the old openHAB version 3 or 2, respectively.You can migrate between versions by selecting the corresponding 4X menu option.That should also result in an openHABian branch change.If you want to choose from release (stable), snapshot or milestone releases, please do so via openhabian-config tool (also menu 4X).Note this will not result in any openHABian branch change.Switching to newer development releases might introduce changes and incompatibilities, so please be sure to make a full openHAB backup first!Check the Linux installation article for all needed details: Linux: Changing Versions 2351a5e196