I wanted to try marlin on my printer, but I'm encountering some issues with steppers and driver A4988. I'm using this setting (as recommended for A4988): #define DEFAULT_AXIS_STEPS_PER_UNIT { 93, 93, 1097.5, 97 } #define MINIMUM_STEPPER_DIR_DELAY 200 #define MINIMUM_STEPPER_PULSE 1 #define MAXIMUM_STEPPER_RATE 500000 For example, I have signal from original firmware which works fine, andby vsavic - Firmware - Marlin