Night light using an ESP 8266 and an Ardafruit NeoPixel Ring

Nightlight.ino

#include <Adafruit_NeoPixel.h>
#ifdef __AVR__
  #include <avr/power.h>
#endif
#define PIN        D4
#define NUMPIXELS 13

Adafruit_NeoPixel pixels(NUMPIXELS, PIN, NEO_GRB + NEO_KHZ800);
#define DELAYVAL 500

void setup() {
#if defined(__AVR_ATtiny85__) && (F_CPU == 16000000)
  clock_prescale_set(clock_div_1);
#endif

  pixels.begin();
  //neded, otherwise the initialization is not done until we run through the pixels
  //which will leave some led's green
  delay(1);
  for(int i=0; i<NUMPIXELS; i++) {
    //turn color to red
    pixels.setPixelColor(i, pixels.Color(900, 0, 0, 0));
  }
  pixels.show();
}

void loop() {}