#include <Adafruit_NeoPixel.h>

#define numPixels 7

Adafruit_NeoPixel loading(numPixels, 21);

uint8_t rainbowColors[][3] = {
  {255, 0, 0},
  {255, 127, 0},
  {255, 255, 0},
  {0, 255, 0},
  {30, 144, 255},
  {0, 0, 255},
  {148, 0, 211}
};

void setup() {

  Serial.begin(115200);
  loading.begin();

}





void loop() {
  uint8_t i = 0;
  while(i<numPixels){
    if (digitalRead(19) == 0) {
      loading.setPixelColor(i, rainbowColors[i][0], rainbowColors[i][1], rainbowColors[i][2]);
      loading.show();
      delay(500);
      loading.clear();
      i++;
    } else{
      Serial.print("Pause");
      delay(1000);
    }

  }

}