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#include <FastLED.h>
 
#define NUM_LEDS 6
#define DATA_PIN PB3
 
// Define the array of leds
CRGB leds[NUM_LEDS];
 
void setup() {
  FastLED.addLeds<NEOPIXEL, DATA_PIN>(leds, NUM_LEDS);
  randomSeed(analogRead(0) + analogRead(1) + analogRead(2) + analogRead(3) + analogRead(4) + analogRead(5));
}
 
void random_pixel_color(int ledID) {
  for (byte colorID = 0; colorID < 3; colorID++) {
    leds[ledID][colorID] = random(0, 255);
  }
  FastLED.show();
}
 
void turn_pixel_off(int ledID) {
  leds[ledID] = CRGB::Black;
  FastLED.show();
}
 
 
void loop() {
  int randomLedID = random(0,NUM_LEDS);
  byte on_or_off =  random(0,10);
  if (on_or_off != 0) {
    random_pixel_color(randomLedID);
  } else {
    turn_pixel_off(randomLedID);
  }
  delay(random(150,350));
}