int value_A0;
void setup() {
  pinMode(13, OUTPUT);// confic output pin 13
  pinMode(12, OUTPUT);
  pinMode(11, OUTPUT);
  pinMode(10, OUTPUT);
  pinMode(9, OUTPUT);
  Serial.begin(9660);
}

void loop() {
  // put your main code here, to run repeatedly:
  value_A0 = analogRead(A0);
  Serial.println(value_A0);
  delay(50);
  if (value_A0 >= 950) {
    digitalWrite(13, HIGH);
  } else if (value_A0 < 950) {
    digitalWrite(13, LOW);
  }
  value_A0 = analogRead(A0);
  Serial.println(value_A0);
  delay(50);
  if (value_A0 >= 750) {
    digitalWrite(12, HIGH);
  } else if (value_A0 < 750) {
    digitalWrite(12, LOW);
    value_A0 = analogRead(A0);
    Serial.println(value_A0);
    delay(50);
  }
  if (value_A0 >= 550) {
    digitalWrite(11, HIGH);
  } else if (value_A0 < 550) {
    digitalWrite(11, LOW);
  }
  value_A0 = analogRead(A0);
  Serial.println(value_A0);
  delay(50);
  if (value_A0 >= 250) {
    digitalWrite(10, HIGH);
  } else if (value_A0 < 250) {
    digitalWrite(10, LOW);
  }
  value_A0 = analogRead(A0);
  Serial.println(value_A0);
  delay(50);
  if (value_A0 >= 150) {
    digitalWrite(9, HIGH);
  } else if (value_A0 < 150) {
    digitalWrite(9, LOW);
  }
}