#define potmeterPin A3

// defines pins numbers
const int stepPin = 3;
const int dirPin = 2;


int p;
float delay_time=100;

void setup() {

  Serial.begin(9600);


  // Sets the two pins as Outputs
  pinMode(stepPin,OUTPUT);
  pinMode(dirPin,OUTPUT);



  // Set Dir to Home switch
  digitalWrite(dirPin,HIGH); // Enables the motor to move in a particular direction


}
void loop() {

     p = analogRead(potmeterPin);
    delay_time = map(p,0,923,100,250);

     motorStep(1);

}
void motorStep( int MAX){

   for(int x = 0; x < MAX; x++) {
        digitalWrite(stepPin,HIGH);
        delayMicroseconds(delay_time);
        digitalWrite(stepPin,LOW);
        delayMicroseconds(delay_time);
      }

}