Prusa mendal I2 Pronteer face Marlin error

[printbus]

Hiya,

Thanks for the replies, i have tried all of the above steps and will upload the firmware now....

and for the lcd screen, when i move the knob i can go from 10% up to .... 999% for FR (does this stand for feed rate or something rate?)

Yep. F/R is Feed Rate. Now we know the rotary encoder is working and don't need to tweak how the Arduino pins for it are configured.

[printbus]

Yes, every pin is mapable. That's the flexibility and the frustration of marlin. File pins.h does the mapping. Again, I'm away from the resources to tell you exactly what to change, so it'd probably be easier to move the wires.