it is far from finished (the basic functionality of sending keys is there, however sending characters not on your layout (e.g. pressing ctrl-shift-u and the hexadecimal representation of the char) is not yet implemented.

also the code for the oled and the button matrix is not there yet, as i don't have them yet and i don't want to code blindly.

https://github.com/girst/hardpass

sudo ./scan /dev/hidg0 2 "Das ist €in kömpexes passwort!"

produces the correct output - including two- and three-byte unicode chars (that are on the keyboard).

WARNING: THE CODE SNIPPET IS OUT OF DATE -- SEE LATEST PROJECT LOG FOR NEW SYNTAX