In the near future we will stop publishing the images for OpenVario with Cubieboard2, as well as XCSoar for Android.
We support Uwe Augustin with OpenSoar and all necessary drivers will be integrated there. You can find the respective releases here:

Here you will find everything you need to build. All data is also published on GitHub:
In the GitHub, you can find the older files in particular, in case you need access to the old files again.

Current version of FreeVario: 2.1
New in V2.1:
– improving sound if entering update mode
– prepare VarioSound for hardware version 2.0

New in V2.0:
– Wind direction and strength of the external wind (Larus, Anemoi, etc.) is displayed
– if this is not available, the wind calculated by XCSoar is displayed
– Function can be deactivated in the menu
– the FreeVario can now also be used as a standalone device for Larus. It can be connected directly to the Larus without XCSoar
– A FreeVario image with OpenSoar is required for OpenVario larger than 24096
– The official OpenSoar image does not yet support the feature. But that will come soon.
– With a FreeVario version lower than 1.2.2, the data folders for the sound board and the graphics board must also be re-uploaded!

New in V1.3:
– Bugfix: Mosquito value was not displayed correctly

New in V 1.2.3:
– In STF mode, net Vario is now shown at the top of the display, and in Vario mode the average climb is shown. The image for the OpenVario must be larger than 23313!

New in V 1.2.2:
– Revision of the web interface for updates
– IMPORTANT!! After the update to V 1.2.2, the two data folders must be reloaded into the memory of the display and soundboard

New in V 1.2.1:
– the update of the two ESPs can now be carried out even more easily via the WiFi (OTA)
– IMPORTANT!! After updating to V 1.2.1, the folder data must be reloaded into the display board’s memory
– See the assembly instructions, Chapter III, variant 1, from point 17

New in V 1.2:
– an update can now be done for both ESPs via WiFi (OTA)

New in V1.1.5 (OpenVario image from at least 22193 required):
– Attenuation (ATT) adjustable in the menu between 0 and 3
– Altitude and speed settings, as well as damping rate and mute settings are stored in the device
– After the OpenVario crashes, the devices synchronize again


Difference between the original image and the FreeVario image for the OpenVario:
– OpenSoar is included in the latest trial version
– Kedder’s main menu is included
– the FreeVario driver is included
– the driver for radio devices Becker AR62xx is included
– the programs i2sdetect and chattr are included
– From version 22164 the LTE stick Huawei3372h-320 is implemented
– from version 22005 optimized so that switching between STF and Vario mode works correctly when using the FreeVario together with the stick remote
control. Of course, the images can still be used without FreeVario, but then other settings must be used to use the stick remote control. The exact
procedure is described in the assembly instructions.
– the driver for the Air Control Display can send GPS data and transponder codes to the Air Control Display

OpenVario-Image for the classic and the Stefly OpenVario incl. OpenSoar 7.41 (including all commits till December, the 29th 2023)
– with the menu from Kedder and FreeVario driver 

– with the new x-menu and FreeVario driver

These images have the new x-menu, which can also be operated with the touch screen. It is a test version and not mature yet! You can find out about the current development in the XCSoar forum: XCSoar forum

OpenVario-Image for the OpenVario DS2 incl. OpenSoar 7.41 (including all commits till December, the 29th 2023)
– with the menu from Kedder and FreeVario driver

– with the new x-menu and FreeVario driver

These images have the new x-menu, which can also be operated with the touch screen. It is a test version and not mature yet! You can find out about the current development in the XCSoar forum: XCSoar forum

XCSoar for Android

– Drivers for FreeVario and Becker AR62XX included

– compatible with stick remote control

Gerber files for the FreeVario PCBs

Video instructions for programming the ESPs

Building instructions for the Larus

Documentation for building a control unit with buttons and rotary encoder