// Define LDR pin
int ldrPin = A0;
// Define relay control pin
int relayPin = 13;
int ledPin = 12;


void setup() {
  // Set relay pin as output
  pinMode(relayPin, OUTPUT);
  // Initialize serial communication
  Serial.begin(9600);
}

void loop() {
  // Read LDR value
  int ldrValue = analogRead(ldrPin);
  // Print LDR value to serial monitor
  Serial.print("LDR Value: ");
  Serial.println(ldrValue);
  
  // Check if it's dark (adjust threshold according to ambient light)
  if (ldrValue < 500) { 
    // If it's dark, turn on the streetlights
  
    digitalWrite(relayPin, HIGH);
    digitalWrite(ledPin, HIGH);
    Serial.println("Streetlights ON");
    
  } else {
    // If it's bright, turn off the streetlights
    digitalWrite(relayPin, LOW);
    digitalWrite(ledPin, LOW);
    Serial.println("Streetlights OFF");
  }
  
  // Delay for stability
  delay(1000);
}