#include <Adafruit_NeoPixel.h>

#define PIN 6            // Pin connected to the data input of the LED ring
#define NUM_LEDS 16      // Number of LEDs in the ring

Adafruit_NeoPixel strip = Adafruit_NeoPixel(NUM_LEDS, PIN, NEO_GRB + NEO_KHZ800);

void setup() {
  strip.begin();         // Initialize the LED strip
  strip.show();          // Initialize all pixels to 'off'
}

void loop() {
  for (int i = 0; i < NUM_LEDS; i++) {
    strip.clear();       // Turn off all LEDs
    strip.setPixelColor(i, strip.Color(255, 0, 0)); // Set the current LED to red
    strip.show();        // Update the LED ring to display the current state
    delay(100);         // Wait for 1 second before moving to the next LED
  }
}