Dusk-to-Dawn Street Lights

// Dusk-to-Dawn Street Lights
const int LDR_PIN = A0;
const int LED_PIN = 9;
const int THRESHOLD = 300;

void setup() {
  pinMode(LED_PIN, OUTPUT);
}

void loop() {
  int lightLevel = analogRead(LDR_PIN);
  if (lightLevel < THRESHOLD) {
    analogWrite(LED_PIN, 255); // Full brightness
  } else {
    analogWrite(LED_PIN, 0); // Off
  }
  delay(1000);
}