#define sensorLDR 
#define pinLED D4 
int nilaiSensor;


void setup() {
  // put your setup code here, to run once:
  Serial.println("LDR reading. . .  ");
  pinMode(2, INPUT);
  
  
}

void loop() {
 digitalRead(2) ;
 Serial. println("Nilai sensor:2 "); 
 Serial. println(2); 
 if(2 <=15 ) {
 digitalWrite(2, HIGH);
 Serial. print("Gelap , LED nyala ");
 
  digitalWrite(2, LOW);
  Serial. print("Terang, LED mati");
 }
 


}