#include <Adafruit_NeoPixel.h>

#define LED_PIN    A3
#define LED_COUNT  30
#define LDR_PIN    A0

Adafruit_NeoPixel strip(LED_COUNT, LED_PIN, NEO_GRB + NEO_KHZ800);

void setup() {
  strip.begin();
  strip.show(); // Tüm LED’leri kapat
}

void loop() {
  int ldrValue = analogRead(LDR_PIN);   // 0–1023
  int brightness = map(ldrValue, 0, 1023, 255, 10);
  brightness = constrain(brightness, 10, 255);

  strip.setBrightness(brightness);

  for (int i = 0; i < LED_COUNT; i++) {
    strip.setPixelColor(i, strip.Color(0, 0, 255)); // Mavi
  }

  strip.show();
  delay(50);
}