int sensor = 0;
void setup() {
  pinMode(A3, INPUT);
  pinMode(6, OUTPUT);
  Serial.begin(9600);
}
void loop() {
  sensor = analogRead(A3);
  Serial.println(sensor);
  delay(100);
  if(sensor<165){
    digitalWrite(6,HIGH);
    delay(100);;
  }
  else{
    digitalWrite(6,LOW);
    delay(100);
  }
  Serial.println(sensor);
  delay(1000);
}