# Third-party notices

This project contains or links to the following third-party software. The
listed versions are the versions resolved by PlatformIO on 2026-08-28.
Original license texts and copyright notices must be retained when the
corresponding software is redistributed.

## Direct and transitive library dependencies

| Component | Version | Used by | License | Source |
| --- | --- | --- | --- | --- |
| U8g2 | 2.36.18 | Sailplane, Winde | BSD-2-Clause; bundled fonts may have additional licenses | https://github.com/olikraus/u8g2 |
| RadioLib | 7.6.0 | Sailplane, Winde | MIT | https://github.com/jgromes/RadioLib |
| ArduinoJson | 7.4.3 | Sailplane, Winde | MIT | https://github.com/bblanchon/ArduinoJson |
| Bolder Flight Systems Airdata Calculations | 4.0.0 | Sailplane | MIT | https://github.com/bolderflight/airdata_calculations |
| Bolder Flight Systems MS4525 | 1.1.3 | Sailplane | MIT | https://github.com/bolderflight/ms4525 |
| Bolder Flight Systems Unit Conversions | 5.0.0 | Sailplane | MIT | https://github.com/bolderflight/units |
| Adafruit BMP085 Library | 1.2.4 | Sailplane | BSD | https://github.com/adafruit/Adafruit-BMP085-Library |
| Adafruit BusIO | 1.17.4 | Sailplane, transitive | MIT | https://github.com/adafruit/Adafruit_BusIO |
| Adafruit Unified Sensor | 1.1.15 | Sailplane, transitive | Apache-2.0 | https://github.com/adafruit/Adafruit_Sensor |
| Adafruit NeoPixel | 1.15.4 | Winde | LGPL-3.0-or-later | https://github.com/adafruit/Adafruit_NeoPixel |
| ESP32Servo | 3.1.3 | Winde | LGPL-2.1-or-later | https://github.com/madhephaestos/ESP32Servo |

## Build framework

| Component | Version | License | Source |
| --- | --- | --- | --- |
| Arduino core for ESP32 | 3.20017.241212+sha.dcc1105b | LGPL-2.1-or-later | https://github.com/espressif/arduino-esp32 |

The PlatformIO platform and build tools are development dependencies. Their
licenses are distributed with their respective PlatformIO packages and are
not relicensed by this project.

## License compatibility

The source code in this repository is licensed under the MIT License in
`LICENSE`. MIT is compatible with the MIT, BSD, Apache-2.0 and LGPL components
listed above. The LGPL components remain under their original licenses; this
project does not change or relicense them.

For a release containing compiled firmware, distribute this file together
with `LICENSE` and retain the copyright and license notices supplied by the
third-party components. U8g2 fonts must be checked separately when changing
fonts, because their licensing terms can differ from the U8g2 library code.