I am very new to 3D printing and I am trying to adjust my firmware. I use the Arduino IDE 1.8.12.
I downloaded the firmware from GitHub that suits my printer, but every time that I try to open the marlin.ino file within, it opens in the Arduino with only the blue "marlin" tab. It doesn't load the other tabs such as Configuration.h and Configuration_adv.h.
I have watched a few YouTube videos, and in all of them, these tabs seem to open automatically.
Thank you very much for any help, I've been struggling to figure this out.
