randomly selected leds

// arduino colored lightning with randomly selected leds to light

#include <FastLED.h>

#define NUM_LEDS 62  // Replace with the actual number of LEDs on your strip
#define AUDIO_SENSOR 0
#define LED_STRIP_PIN 6  // Change to the pin you've connected the data line of your LED strip

CRGB leds[NUM_LEDS];

void setup() {
  analogReference(DEFAULT);  // Use the default analog reference
  FastLED.addLeds<WS2812B, LED_STRIP_PIN, GRB>(leds, NUM_LEDS);
  Serial.begin(9600);
}

void loop() {
  int sensorValue = analogRead(AUDIO_SENSOR);
  int threshold = 450;

  if (sensorValue > threshold) {
    int numLedsToLight = map(sensorValue, threshold, 1023, 0, NUM_LEDS);
    numLedsToLight = constrain(numLedsToLight, 0, NUM_LEDS);

    // Set all LEDs to off initially
    fill_solid(leds, NUM_LEDS, CRGB::Black);

    // Randomly select LEDs to light up
    for (int i = 0; i < numLedsToLight; i++) {
      int randomIndex = random(NUM_LEDS);
      leds[randomIndex] = blend(CRGB(0, 0, 128), CRGB::White, map(i, 0, numLedsToLight - 1, 0, 255));
    }

    FastLED.show();
    delay(random(100, 300));  // Random delay between flashes

    // Turn off all LEDs
    fill_solid(leds, NUM_LEDS, CRGB::Black);
    FastLED.show();
  }

  delay(20);  // Add a small delay to avoid continuous reading
}