#define Pot A0
#define Red 2
#define Yellow 3
#define Green 4
float Pot_status;
void setup() {
  pinMode(Pot,INPUT);
  pinMode(Red,OUTPUT);
  pinMode(Yellow,OUTPUT);
  pinMode(Green,OUTPUT);
  Serial.begin(115200);
}

void loop() {
  Pot_status=analogRead(Pot);
  Serial.print("Pot_Value="); 
  Serial.println(Pot_status);
  delay(100);
if (Pot_status<=341){
  digitalWrite(Red,LOW);
  digitalWrite(Yellow,LOW);
  digitalWrite(Green,HIGH);
}else if ((Pot_status>342) && (Pot_status<=682)) {
  digitalWrite(Red,LOW);
  digitalWrite(Yellow,HIGH);
  digitalWrite(Green,LOW);
}else if ((Pot_status>683) && (Pot_status<=1023)){
  digitalWrite(Red,HIGH);
  digitalWrite(Yellow,LOW);
  digitalWrite(Green,LOW);
}
}