int pin8 = 8;
int sensor = A0;
int sensorvalue = 0;
void setup() {
  // put your setup code here, to run once:
  
  Serial.begin(9600);
  pinMode(pin8, OUTPUT);
  pinMode(A0, INPUT);

}

void loop() {
  // put your main code here, to run repeatedly:
  sensorvalue = analogRead(sensor);
  Serial.println(sensorvalue, DEC);
  if (sensorvalue > 130) {
    digitalWrite(pin8, HIGH);
  }
  else {
    digitalWrite(pin8, LOW);
  }
  delay(1000);
}