#include <Adafruit_NeoPixel.h>

int PIN = 12;
int N_LEDS = 40;
Adafruit_NeoPixel ring = Adafruit_NeoPixel(N_LEDS, PIN);

void setup() {
  ring.begin();

  for (int i = 0; i < N_LEDS; i++) {
    // Turn off all the LEDs initially
    ring.setPixelColor(i, ring.Color(0, 0, 0));
    ring.show();
    delay(500);

    // Set colors based on LED index
    if (i < 10) {
      ring.setPixelColor(i, ring.Color(255, 0, 0)); // Red
    } 
    else if (i >= 10 && i < 20) {
      ring.setPixelColor(i, ring.Color(121, 243, 88)); // Custom color within range
    } 
    else if (i >= 20 && i < 30) {
      ring.setPixelColor(i, ring.Color(44, 55, 77)); // Custom color within range
    } 
    else {
      ring.setPixelColor(i, ring.Color(33, 77, 99)); // Custom color within range
    }

    ring.show();
    delay(500);
  }
}

void loop() {
  // Your main loop code goes here
}