@tttadam We all have these kind of findings over and over again.

@robert-hh, @jcaron Thanks again for the reply. I knew about the possability to build own firmware but i don't know how to do that and it's going way to far. So i will use the RTM module and multiplex the pins. Haven't tried it yet because actual i'm doing my Bachelor Thesis and i don't have much time for personal projects.

@mikexu007 You can work with same lib