#include <Adafruit_NeoPixel.h>
#define DATA_PIN 3
#define NUM_LEDS 5

Adafruit_NeoPixel led_strip(NUM_LEDS, DATA_PIN, NEO_GRB + NEO_KHZ800);


void setup() {
  // put your setup code here, to run once:
  Serial.begin(9600);
  Serial.println("Please send RGB values separated by comas, then ENTER");
  led_strip.begin();

  for(int i = 0; i < NUM_LEDS; i++){
      led_strip.setPixelColor(i, led_strip.Color(0,0,0));
      led_strip.show();
  }
}

void loop() {

  if(Serial.available()){

    //int r = Serial.getChar();
    
    int r = Serial.parseInt();
    int g = Serial.parseInt();
    int b = Serial.parseInt();
    // look for end of line
    if (Serial.read() == '\n') {
      Serial.print("received values:");
      Serial.print(r);
      Serial.print(",");
      Serial.print(g);
      Serial.print(",");
      Serial.println(b);

      for(int i = 0; i < NUM_LEDS; i++){
          led_strip.setPixelColor(i, led_strip.Color(r,g,b));
      }
      led_strip.show();
    }
  }
}