CNC Arduino UNO shield V3 engraving machine expansion board 3D printer A4988 driver board

#define EN 8 //Enable terminal of stepper motor, active low

#define X_DIR 5 //X-axis stepper motor direction control

#define Y_DIR 6 //y-axis stepping motor direction control

#define Z_DIR 7 //z-axis stepping motor direction control

#define X_STP 2 //x-axis step control

#define Y_STP 3 //y-axis step control

#define Z_STP 4 //z-axis step control

/*

//Function: step Function: Control the direction and number of steps of the stepper motor.

//Parameters: dir direction control, dirPin corresponds to the DIR pin of the stepper motor, stepperPin corresponds to the step pin of the stepper motor, steps is the number of steps

//no return value

*/

void step(boolean dir, byte dirPin, byte stepperPin, int steps)

{

  digitalWrite(dirPin, dir);

  delay(50);

  for (int i = 0; i < steps; i++) {

    digitalWrite(stepperPin, HIGH);

    delayMicroseconds(800);  

    digitalWrite(stepperPin, LOW);

    delayMicroseconds(800);  

  }

}

void setup(){//Set the IO pin used by the stepper motor as an output

  pinMode(X_DIR, OUTPUT); pinMode(X_STP, OUTPUT);

  pinMode(Y_DIR, OUTPUT); pinMode(Y_STP, OUTPUT);

  pinMode(Z_DIR, OUTPUT); pinMode(Z_STP, OUTPUT);

  pinMode(EN, OUTPUT);

  digitalWrite(EN, LOW);

}

void loop(){

  step(false, X_DIR, X_STP, 200); //X-axis motor reverses 1 circle, 200 steps are one circle

  step(false, Y_DIR, Y_STP, 200); //Y-axis motor reverses 1 circle, 200 steps are one circle

  step(false, Z_DIR, Z_STP, 200); //z-axis motor reverses 1 circle, 200 steps are one circle

  delay(1000);

  step(true, X_DIR, X_STP, 200); //X-axis motor rotates forward for 1 circle, 200 steps are one circle

  step(true, Y_DIR, Y_STP, 200); //Y-axis motor rotates forward for 1 circle, 200 steps as a circle

  step(true, Z_DIR, Z_STP, 200); //z-axis motor rotates forward for 1 circle, 200 steps as a circle

  delay(1000);

}