#define stp 3
#define dir 2
#define btn1 5
#define btn2 6
#define start_btn 7
#define stop_btn 8
#define pot A0

void setup() {
  pinMode(stp, OUTPUT);
  pinMode(dir, OUTPUT);
  pinMode(btn1, INPUT_PULLUP);
  pinMode(btn2, INPUT_PULLUP);
  pinMode(start_btn, INPUT_PULLUP);
  pinMode(stop_btn, INPUT_PULLUP);
  pinMode(pot, INPUT);
}

int val = 0;
void loop() {
  //digitalWrite(dir, HIGH);
  
  /*for (int i = 0; i < 400; i++){
    digitalWrite(stp, HIGH);
    delay(2);
    digitalWrite(stp, LOW);
    delay(2);
  }
  digitalWrite(dir, LOW);
  for (int i = 0; i < 400; i++){
    digitalWrite(stp, HIGH);
    delay(2);
    digitalWrite(stp, LOW);
    delay(2);
  }*/
  if (digitalRead(btn1) == LOW)
    digitalWrite(dir, HIGH);
  if (digitalRead(btn2) == LOW)
    digitalWrite(dir, LOW);

  if (digitalRead(start_btn) == LOW)
  {
    
    while (digitalRead(stop_btn) == HIGH){
      val = analogRead(pot);
      val = map(val, 0, 1023, 1, 10);
      digitalWrite(stp, HIGH);
      delay(val);
      digitalWrite(stp, LOW);
      if (digitalRead(btn1) == LOW)
        digitalWrite(dir, HIGH);
      if (digitalRead(btn2) == LOW)
      digitalWrite(dir, LOW);
    }
    
  }
  
}