Untitled

#include <Adafruit_NeoPixel.h>

// Define the number of LEDs and the data pin
#define NUM_LEDS 3
#define DATA_PIN 3

// Create a NeoPixel object
Adafruit_NeoPixel strip = Adafruit_NeoPixel(NUM_LEDS, DATA_PIN, NEO_GRBW + NEO_KHZ800);

void setup() {
  // Initialize the LED strip
  strip.begin();
  strip.show();
}

void loop() {
  // Set all the LEDs to red
  strip.fill(strip.Color(255, 0, 0, 0));

  // Show the LEDs
  strip.show();

  // Wait for a second
  delay(1000);

  // Loop through each LED and change its color to green
  for (int i = 0; i < NUM_LEDS; i++) {
    strip.setPixelColor(i, strip.Color(0, 255, 0, 0));

    // Show the LEDs
    strip.show();

    // Wait for a second
    delay(1000);
  }
}