#include <FastLED.h>

#define LED_PIN     5
#define NUM_LEDS    60

CRGB leds[NUM_LEDS];
const int BUTTON = 2;


void setup(){
    FastLED.addLeds<WS2812, LED_PIN, GRB>(leds, NUM_LEDS);
    FastLED.setMaxPowerInVoltsAndMilliamps(5,500);
    FastLED.setBrightness(255);
    FastLED.clear();
    FastLED.show();
    Serial.begin(9600);
    pinMode(BUTTON, INPUT);
    
}

void loop(){
    int state = LOW;    
   state = digitalRead(BUTTON);
    
    if (state == HIGH){

    uint8_t pos = map(beat8(40, 0),0,255,0,NUM_LEDS-1);
    uint8_t pos1 = map(beat8(40, -500),0,255,0,NUM_LEDS-1);
    uint8_t pos2 = map(beat8(40, -1000),0,255,0,NUM_LEDS-1);
    
    leds[pos] = CHSV(0,0,255);
    leds[pos1] = CHSV(0,0,255);
    leds[pos2] = CHSV(0,0,255);

    blur1d(leds, NUM_LEDS, 225);
    
    fadeToBlackBy(leds, NUM_LEDS, 10);
    
    FastLED.show();
    
    }
    if (state == LOW){
    uint8_t pos = map(beat8(40, 0),0,255,0,NUM_LEDS-1);
    uint8_t pos1 = map(beat8(40, 500),0,255,0,NUM_LEDS-1);
    uint8_t pos2 = map(beat8(40, 1000),0,255,0,NUM_LEDS-1);

    leds[pos] = CHSV(255,255,0);
    leds[pos1] = CHSV(255,255,0);
    leds[pos2] = CHSV(255,255,0);
    FastLED.show();
    }
}