Random Blink LEDs

Question

How can I make LEDs blink randomly?

I found a piece of code, but it is not working for me. I probably need something other than setPixel(), but I don't know what.

I am using the Fast.Led library with Arduino Nano and WS2812B LEDs

void loop() {
 Twinkle(CRGB::Red, 10, 100, false);
}
void Twinkle(uint32_t color, uint16_t Count, uint16_t SpeedDelay, boolean OnlyOne) 
{
 FastLED.setBrightness(MAX_BRIGHTNESS);
 fill_solid(leds, random(NUM_LEDS), CRGB::White);
 FastLED.show(); 
 for (int i=0; i < Count; i++) {
// setPixel(random(NUM_LEDS),red,green,blue); //!ORIGINAL LINE OF CODE!
 setPixel(random(NUM_LEDS), color); //!MY LINE! 
 FastLED.show();
 delay(SpeedDelay);
 if (OnlyOne) {
 fill_solid(leds, NUM_LEDS, CRGB::Black);
 FastLED.show();
 }
 }
 delay(SpeedDelay);
 return;
}

• SoreDakeNoKoto: What exactly is setPixel()? Does the original code work at all? Remove the statements within exclamation marks and use proper comments for your code. A link to your library would also be nice.
• Nick Gammon: it is not working for me - what is it doing? Nothing blinks? Too many things blink? It isn't random? Aliens kidnap you and do scientific experiments on you? "Not working" doesn't tell us much.

Answer 1

I can't tell exactly whats not working with your code,it would be really helpful if you elaborate more. But here is some code that I wrote and I think it will get the job done:

//declare our variables:
int myPins[] = {2, 4, 8, 3, 6}; //Enter the number of the pins being used
int RNum = 0;
void loop()
{
 DigitalWrite(myPins[RNum],LOW);
 RNum = Random(0,MAX) // MAX being the number of LEDs connected minus one 
 //the above generates a random number
 DigitalWrite(myPins[RNum],High);
}

This will turn on one LED at a time.