int ledm = 7;
int ledk = 6;
int ledh = 5;

int value = A1;

void setup() {
  // put your setup code here, to run once:
  Serial.begin(9600);
  pinMode(ledm , OUTPUT);
  pinMode(ledk, OUTPUT);
  pinMode(ledh, OUTPUT);
}

void loop() {
  // put your main code here, to run repeatedly:
  if(analogRead(value) <= 341){
    digitalWrite(ledm , HIGH);
    digitalWrite(ledk , LOW);
    digitalWrite(ledh , LOW);
  }else if(analogRead(value) <= 682){
    digitalWrite(ledk, HIGH);
    digitalWrite(ledm , LOW);
    digitalWrite(ledh , LOW);
  }else{
    digitalWrite(ledh, HIGH);
    digitalWrite(ledm , LOW);
    digitalWrite(ledk , LOW);
  }
  Serial.print("Value :");
  Serial.println(analogRead(value));
  delay(500);
}