int analogPin=A0;
int greenLED=13;
int yellowLED=12;
int redLED=11;
int wait1=1000;

int wait=750;
int value;
float voltage;



void setup() {
pinMode(analogPin,INPUT);
pinMode(greenLED,OUTPUT);
pinMode(yellowLED,OUTPUT);
pinMode(redLED,OUTPUT);

Serial.begin(115200);

}

void loop() {
  value=analogRead(A0);
  voltage=(5.0/1023.0)*value;
  Serial.print("Voltage is : ");
  Serial.println(voltage);
  delay(wait);
  
  if (voltage>=0.0 && voltage<=2.5){
    digitalWrite(greenLED,HIGH);
  }
  else (digitalWrite(greenLED, LOW));

  if (voltage>2.5 && voltage<=4.0){
    digitalWrite(yellowLED,HIGH);
  }
  else (digitalWrite(yellowLED, LOW));

  if (voltage>4.0 && voltage<=5.0){
    digitalWrite(redLED,HIGH);
  }
  else (digitalWrite(redLED, LOW));







}