// include library
const int photo = A5;
int sensorValue = 0;
int ledLevel = 0;
#include<FastLED.h>

//define number of LED and pin
#define NUM_LEDS 24
#define PIN_LED 13

// create the ld object array
CRGB leds[NUM_LEDS];

// define 3 byte for the random color
byte r, g, b;
int x;
int cur = 0;

void setup()
{
Serial.begin(9600);
pinMode(PIN_LED, OUTPUT);
pinMode(photo, INPUT);
// init the LED object
FastLED.addLeds<NEOPIXEL, PIN_LED>(leds, NUM_LEDS);
// set random seed
randomSeed(analogRead(0));
}


void loop() {
x = analogRead(photo);
Serial.println(x);
if(x<500)
{
for (cur=0; cur < NUM_LEDS; cur++)
{
if (x>500)
{
break;
}
// chose random value for the r/g/b
r = random(0, 255);
g = random(0, 255);
b = random(0, 255);

//set the value to the led
leds[cur] = CRGB (r, g, b);

// set the colors set into the phisical LED
FastLED.show();

// delay 50 millis
FastLED.delay(200);
}
for (cur=0; cur < 24; cur++)
{
//set the value to the led
leds[cur] = CRGB (0,0,0);

// set the colors set into the phisical LED
FastLED.show();
}
}
else
{
for (int cur = 0; cur < NUM_LEDS; cur++)
{
// chose random value for the r/g/b
r = 0;
g = 0;
b = 0;

//set the value to the led
leds[cur] = CRGB (r, g, b);

// set the colors set into the phisical LED
FastLED.show();

// delay 50 millis
FastLED.delay(200);
}
}
// loop over the NUM_LEDS
}