Hi,
I have a doubt in pins.h in Sanguino atmega644P (I am using Gen6 Motherboard) and how do they write it ?
Some example codes in Marlin --> pins.h
#define X_STEP_PIN 15
#define X_DIR_PIN 18
#define X_ENABLE_PIN 19
#define X_MIN_PIN 20
#define X_MAX_PIN -1
here 15,18,19,20,-1 represents pin and how does it relate with Microcontroller. I was bit confused with Merging Electronics with this and presence of -1 here
Thanks in advance for your help