feature proposal

Scrolling text only supports standard ASCII characters 32-126, and excludes all special "codepage" characters above 126 - for example German Umlaut, Nordic, French, and ascii "block art characters".

In fact the source code wled00/src/fonts has the full "codepage 437" included, but commented out to save flash space - roughly saving ~6-10 KB flash.

https://en.wikipedia.org/wiki/Code_page_437

Possible Solution

We could allow to use the full codepage as an option, for users who can tolerate the increased firmware size:

• verify if WebUI, JSON and XML endpoints already use UTF-8 encoding (should be, but not sure)
• make the compilation of the full font tables optional, for example guarded with #ifdef WLED_FULL_CP437
• change void Segment::drawCharacter() to first translate the segment name from UTF-8 to CP437, then use the resulting font index to also draw "extended" ASCII characters.
• maybe include the "€" (Euro) symbol from CP858 as an additional character

Additional Context

This could allow users - with some coding effort - to also add support for their local writing system. It would just be necessary to replace parts of the wled00/src/fonts/*.h files with letters from another codepage, then adjust the UTF-8 translation function in Segment::drawCharacter(), and recompile.