CNC SHEILD for NON CNC PROJECT with multiple SHEILD CARDS controlled by a Windows Form (visual basic)

I added a couple lines to your #11 setup code to enable the drivers:

void setup() {
  // Initialize serial communication
  Serial.begin(9600);

  // Set default speed and acceleration
  stepperX.setMaxSpeed(1000);
  stepperX.setAcceleration(500);
  stepperY.setMaxSpeed(1000);
  stepperY.setAcceleration(500);
  pinMode(8,OUTPUT); digitalWrite(8,LOW);
  Serial.println("forum: [XY] <steps> <speed> <acceleration>");
}

and dropped the code into this Wokwi simulation setup and it seems to work as expected: