#define REDLED 4
#define  YELLOWLED 2
#define GREENLED 5
#define POT A0


void setup(){
  
  pinMode(REDLED, OUTPUT);
  pinMode(YELLOWLED, OUTPUT);
  pinMode(GREENLED, OUTPUT);
  pinMode(POT, INPUT);
  Serial.begin(9600);
}
void loop(){
  
  int potvalue=analogRead(A0);
  
  int mapvalue=map(potvalue,0,1023,0,100);
  
  
  if(mapvalue<=25)
  {
      digitalWrite(REDLED, HIGH);
      digitalWrite(YELLOWLED, LOW);
      digitalWrite(GREENLED, LOW);

  }
  else if(mapvalue>25&&mapvalue<50)
  {
      digitalWrite(YELLOWLED, HIGH);
      digitalWrite(REDLED, LOW);
      digitalWrite(GREENLED, LOW);

  }
  else
  {
    digitalWrite(GREENLED, HIGH);
    digitalWrite(REDLED, LOW);
    digitalWrite(YELLOWLED, LOW);
  }
 
  Serial.print("POT VALUE: ");
  Serial.println(potvalue);
  Serial.print("MAP VALUE:");
  Serial.println(mapvalue);
  delay(1000);
}