#include <Adafruit_NeoPixel.h>

#define NUMPIXELS 1
#define DATA_PIN 12
#define POWER_PIN 11

Adafruit_NeoPixel pixels(NUMPIXELS, DATA_PIN, NEO_GRB + NEO_KHZ800);

void setup() {
  pixels.begin();
  pinMode(POWER_PIN, OUTPUT);
  digitalWrite(POWER_PIN, HIGH);
}

void loop() {
  pixels.clear();
  pixels.setPixelColor(0, pixels.Color(255, 255, 0)); // Yellow
  pixels.show();
  delay(1000);

  pixels.clear();
  pixels.setPixelColor(0, pixels.Color(255, 0, 255)); // Purple
  pixels.show();
  delay(1000);
  }