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int sensorPin = A0;    // select the input pin for the potentiometer
int sensorValue = 0;  // variable to store the value coming from the sensor

void setup() {
  Serial.begin(9600);
  pinMode(11,OUTPUT);
}

void loop()
{
  sensorValue=analogRead(sensorPin);
  if(sensorValue <= 14)
  digitalWrite(11,HIGH);
  else
  digitalWrite(11,LOW);
  Serial.println(sensorValue);
  delay(2);
}