//#define X_HARDWARE_SERIAL Serial1

// true = interpolate to 256 microsteps for smoother motion #define TMC_INTERPOLATE true

#define FAN_LIST \

#define NUM_TOOLS 1

#define NUM_TOOLS 1

- in Marlin #define SDSUPPORT aktiviert

I found where it changes in the #define ZHOME_HEAT_HEIGHT parameter, thanks

#define Z_PROBE_BED_DISTANCE \

#define ENDSTOP_X_BACK_ON_HOME 0.5

  #define TMC2130_TCOOLTHRS_X 1048575

  //#define LCD_SET_PROGRESS_MANUALLY

#define NUM_TOOLS 2

#define Z_PROBE_SPEED 6

    #define SERVO0_PIN                         7

//#define EEPROM_SETTINGS     // Persistent storage with M500 and M501

//#define DISTINCT_E_FACTORS

  #define MOTHERBOARD BOARD_MKS_GEN_L_V21 

#define SDSUPPORT 0

gibt im Board. Wenn da 3 steht kannst du die #define EXT4_... ruhig löschen.

 #define EXT4_ENABLE_PIN ORIG_E4_ENABLE_PIN