const int dirPin = 3;
const int stepPin = 2;
const int stepsPerRevolution = 200;

void setup() {
  // put your setup code here, to run once:
pinMode(dirPin,OUTPUT);
pinMode(stepPin,OUTPUT);
}

void loop() {
  // put your main code here, to run repeatedly:
digitalWrite(dirPin, HIGH);

for (int x=0; x < stepsPerRevolution; x++)
{
digitalWrite(stepPin, HIGH);
delayMicroseconds(2000);
digitalWrite(stepPin, LOW);
delayMicroseconds(2000);
}
delay(100);
}