const int sensorPin = D2; 
const int ledPin = D0;   

void setup() {
  pinMode(sensorPin, INPUT);  
  pinMode(ledPin, OUTPUT);  
  Serial.begin(9600); 
}

void loop() {
  int sensorValue = digitalRead(sensorPin); 
  
  Serial.println(sensorValue);
  
  if (sensorValue == HIGH) {
    digitalWrite(ledPin, HIGH); 
  } else {
    digitalWrite(ledPin, LOW);
  }
  
  delay(100);
}