(10% is that I’m incredibly stupid and I missed something obvious)
so…
I either missread the labels on my screen board or I was misslead by the diagram since my tft35 isn’t the exact same as the one from the documentation…
I wired them as EXP 1, EXP2 and EXP3 (in that order, EXP3 wasn’t used)
and then I realized my board where actually EXP3, EXP2 and EXP1 instead
so I had EXP3 wired to EXP1…
I feel very dumb, but I have a working screen!
now to the next step of the project, to figure out how to “home” my machine and make use of the endstops.