How to Drive DC Motor with Arduino

//Arduino DC motor controlling

#define motor_pin 3

void setup() { //setup function
  // put your setup code here, to run once:
  Serial.begin(9600);
  Serial.println("Arduino Motor controller");

  pinMode(motor_pin, OUTPUT);
}

void loop() { //loop function
  // put your main code here, to run repeatedly:
  Serial.println("Motor ON");
  digitalWrite(motor_pin, HIGH); //turn ON motor

  delay(1000); //wait 1second

  Serial.println("Motor 0FF");
  digitalWrite(motor_pin, LOW); //turn OFF motor

  delay(1000); //wait 1second
}