[Proposal] Contribution for Korean language, font, and voice support

[siyeongjang]

Hello,

I would like to contribute Korean translation, font, and voice support for Korean-speaking users.

I have experience working on Korean localization in EdgeTX,
and have previously submitted a related PR:
EdgeTX Korean Font PR

For OpenTX, I plan to carry out the work in a separate branch and submit a PR once the changes are organized.
Please let me know if it is okay to proceed.
Also, since EdgeTX and OpenTX may differ in source structure,
I would appreciate any guidance on the best approach.

👉 For testing and validation, I’m using a FlySky I6X-based device.

Below is a rough outline of how the Korean localization was implemented in EdgeTX:

Path	Description
radio/src/fonts/Nanum/NanumBarunpenR.ttf fonts/Nanum/NanumBarunpenB.ttf	Added lightweight and readable Korean fonts
radio/src/fonts/lvgl/make_fonts.sh	Added KO_SYMBOLS variable and used get_char_ko.py to process
radio/src/fonts/lvgl/get_char_ko.py	Extracted actual used characters from ko.csv and ko.h
radio/src/gui/colorlcd/fonts.cpp	Registered lv_font_ko_STD.c and used custom symbols to avoid FONT_TABLE(ko) conflicts
radio/src/fonts/lvgl/lrg/lv_font_ko_STD.c	Auto-generated Korean font source file
radio/src/translation/ko.h	Korean UI string definitions based on en.h

Additionally, I’d like to ask if it would be acceptable to include Korean voice support.
In EdgeTX, we generated .wav files using Google Cloud TTS (Leda, ko-KR voice)
and applied them via custom mapping.

I look forward to your response.
Thank you as always for maintaining such a great project 🙏

--
Siyeong Jang (siyeongj08@gmail.com)

[ajjjjjjjj]

Hi!

Thanks for your contribution. Korean support in EdgeTX is limited to color radios therefore it is not possible to just port it here.

Voice support is possible and very welcome. You need to figure out how to generate files and adjust file names in form of <index>_<name>.wav to match EN sound pack.
I wasn't using generator, I only adjusted OpenTX sound pack.

[siyeongjang]

Hi!

Thanks for your contribution. Korean support in EdgeTX is limited to color radios therefore it is not possible to just port it here.

Voice support is possible and very welcome. You need to figure out how to generate files and adjust file names in form of <index>_<name>.wav to match EN sound pack. I wasn't using generator, I only adjusted OpenTX sound pack.

Thanks for the clarification!

I understand that Korean UI support from EdgeTX cannot be directly ported here, and that's okay.
I'm still interested in adapting OpenTX itself to support Korean where possible.

May I ask — does OpenTX currently support any other non-English languages, such as Japanese or French?
If so, I’d like to follow a similar approach and try to make Korean support possible in the same way.

Thank you again for your guidance!

[ajjjjjjjj]

It supports other languages, see i.e.:
radio/src/translations/*.h.txt - translations
radio/src/fonts/std/font_*.png - language specific fonts