#include <Adafruit_NeoPixel.h>

int Power = 11; // Power pin for the NeoPixel
int PIN = 12;   // Data pin for the NeoPixel
#define NUMPIXELS 1
int buttonPin = D1; // Pin D1 connected to the button

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

void setup() {
  pixels.begin();
  pinMode(Power, OUTPUT);
  digitalWrite(Power, HIGH);
  pinMode(buttonPin, INPUT_PULLUP); // Use internal pull-up resistor to avoid floating state
}

void loop() {
  if (digitalRead(buttonPin) == HIGH) {
    // Button is pressed, set color to white
    pixels.clear();
    pixels.setPixelColor(0, pixels.Color(255, 255, 255)); // White color
    pixels.show();
    delay(500);
  } else {
    // Cycle between red, green and blue
    pixels.clear();
    pixels.setPixelColor(0, pixels.Color(0, 255, 0)); // Green color
    pixels.show();
    delay(500);
    pixels.clear();
    pixels.setPixelColor(0, pixels.Color(0, 0, 255)); // Blue color
    pixels.show();
    delay(500);
    pixels.clear();
    pixels.setPixelColor(0, pixels.Color(255, 0, 0)); // Red color
    pixels.show();
    delay(500);
    }
  }
Snappy
