random_leds - randomly turn LEDs on and off

random_leds

int PIN_BASE=4;   // lowest pin to use.  
int PIN_CT=6;     // number of LEDs attached

int delayBase=35; // a heartbeat, of sorts. in milliseconds.

void setup() {

  // initialize digital pins (base) to (base+count) as output: 
  for (int i = PIN_BASE; i <= PIN_BASE+PIN_CT; i++) {
    pinMode(i, OUTPUT);
  }  
  randomSeed(analogRead(0));
}

void loop(){
  digitalWrite(random(PIN_BASE,PIN_BASE+PIN_CT+1), random(LOW,HIGH+1) );
  delay(random(1,3)* delayBase);
}