I am building my project based on an Arduino MEGA 2560 (need a lot of digital pins for the interface): Having searched the TMCStepper project here on github and arround the internet, I still haven't ...

Select the *Arduino / Genuino Mega or Mega 2560 *board through Tools -> Board -> Arduino / Genuino Mega or Mega 2560 . Select the COM port that was written out from the Device Manager when installing ...