#define poten A5
#define led 13
#define led2 12
#define led3 11
#define led4 10
#define led5 9

void setup() {
  pinMode(poten, INPUT);
  pinMode(led, OUTPUT);
  Serial.begin(9600);
}

void loop() {
  float value = analogRead(poten);
  float percent = (value/1023)*100;
  Serial.println(percent);
  if(percent >= 20) 
  {
    digitalWrite(led, HIGH);
    digitalWrite(led2, LOW);
    digitalWrite(led3, LOW);
    digitalWrite(led4, LOW);
    digitalWrite(led5, LOW);
  }
  if(percent >= 40)
  {
    digitalWrite(led, HIGH);
    digitalWrite(led2, HIGH);
    digitalWrite(led3, LOW);
    digitalWrite(led4, LOW);
    digitalWrite(led5, LOW);
  }
  if(percent >= 60)
  {
    digitalWrite(led, HIGH);
    digitalWrite(led2, HIGH);
    digitalWrite(led3, HIGH);
    digitalWrite(led4, LOW);
    digitalWrite(led5, LOW);
  }
  if(percent >= 80)
  {
    digitalWrite(led, HIGH);
    digitalWrite(led2, HIGH);
    digitalWrite(led3, HIGH);
    digitalWrite(led4, HIGH);
    digitalWrite(led5, LOW);
  }
  if(percent >= 100)
  {
    digitalWrite(led, HIGH);
    digitalWrite(led2, HIGH);
    digitalWrite(led3, HIGH);
    digitalWrite(led4, HIGH);
    digitalWrite(led5, HIGH);
  }
  if(percent < 20)
  {
    digitalWrite(led, LOW);
    digitalWrite(led2, LOW);
    digitalWrite(led3, LOW);
    digitalWrite(led4, LOW);
    digitalWrite(led5, LOW);
  }

}