#include <Adafruit_NeoPixel.h>
#ifdef __AVR__
  #include <avr/power.h>
#endif

#define PIN 19
Adafruit_NeoPixel strip = Adafruit_NeoPixel(3, PIN, NEO_GRB + NEO_KHZ800);



int ledR = 0;
int ledG = 0;
int ledB = 0;
int pixelBrightness = 50;
int Mode = 0, j = 0, Speed = 20;


void setup() {
  // This is for Trinket 5V 16MHz, you can remove these three lines if you are not using a Trinket
  #if defined (__AVR_ATtiny85__)
    if (F_CPU == 16000000) clock_prescale_set(clock_div_1);
  #endif
  // End of trinket special code
  Serial.begin(9600);
  strip.begin();
  strip.show(); // Initialize all pixels to 'off'
}



  
void loop(){
  if(Serial.available()>0){
    int input = Serial.read();   
    if(input == 1 ){
       colorWipe(strip.Color(255, 0, 0), 0); // Red
    } else if (input ==2){
        colorWipe(strip.Color(0, 255, 0), 0); // Green
    }  else if(input ==3){
  colorWipe(strip.Color(0, 0, 255), 0); // Blue
    } 
    strip.show();
    }}
  
  // Fill the dots one after the other with a color
void colorWipe(uint32_t c, uint8_t wait) {
  for(uint16_t i=0; i<strip.numPixels(); i++) {
    strip.setPixelColor(i, c);
    strip.show();
    delay(wait);
  }
}