Light example with NeoPixel and ESP8266

esp8266_NeoPixel_example.ino

#include <Adafruit_NeoPixel.h>
#define PIN 5
int numPixels = 12;

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

void setup() {
  strip.begin();
  strip.setBrightness(15); 
  strip.show();
}

uint32_t red = strip.Color(255, 0, 0); 
uint32_t blue = strip.Color(0, 0, 255);
 
void loop() {
  for(uint16_t i=0; i<strip.numPixels(); i++) { 
        strip.setPixelColor(i, blue); 
        strip.show();
        delay(1000); .
        strip.setPixelColor(i, red);  
        strip.show(); 
    }
}