// Define the pins for LDR and relay module
const int ldrPin = A0;    // Analog pin for LDR module
const int relayPin = 7;   // Digital pin for relay module control

void setup() {
  // Initialize the serial communication for debugging
  Serial.begin(9600);

  // Set relayPin as OUTPUT
  pinMode(relayPin, OUTPUT);
}

void loop() {
  // Read the analog value from the LDR
  int ldrValue = analogRead(ldrPin);
  
  // Print the LDR value for debugging
  Serial.print("LDR Value: ");
  Serial.println(ldrValue);

  // Check the LDR value to determine if it's dark or light
  // You may need to adjust the threshold value based on your environment
  if (ldrValue < 500) { // Adjust the threshold value as needed
    // If it's dark, activate the relay
    digitalWrite(relayPin, HIGH);
    Serial.println("It's dark. Turning on the streetlight.");
  } else {
    // If it's light, deactivate the relay
    digitalWrite(relayPin, LOW);
    Serial.println("It's light. Turning off the streetlight.");
  }

  // Delay for a short duration to avoid rapid reading
  delay(1000); // Adjust delay time as needed
}