const int potPin = A1; 

int potValue = 0;

void setup() {
  Serial.begin(115200);
  delay(1000);
}

void loop() {
  potValue = analogRead(potPin);

  if (potValue > 500) {
    Serial.println("warning"); 
  }
  Serial.println(potValue);
  delay(500); 
}

// 3 male-female , potentiometer,  arduino uno