gistfile1.txt

// led bank 1 enable pin
int EnA = 10;
// led bank 2 enable pin
int EnB = 5;


int In1 = 9;
int In2 = 8;
int In3 = 7;
int In4 = 6;

long randNumber;


void setup()
{
  // All  control pins are outputs
  pinMode(EnA, OUTPUT);
  pinMode(EnB, OUTPUT);
  pinMode(In1, OUTPUT);
  pinMode(In2, OUTPUT);
  pinMode(In3, OUTPUT);
  pinMode(In4, OUTPUT);
}

void loop()
{
  randomSeed(analogRead(0));
  randNumber = random(255);  
  // turn on bank a
  digitalWrite(In1, HIGH);
  digitalWrite(In2, LOW);
  // set value to random out 255
  analogWrite(EnA, randNumber);

  randomSeed(analogRead(0));
  randNumber = random(255);
  // turn on bank B
  digitalWrite(In3, HIGH);
  digitalWrite(In4, LOW);
  analogWrite(EnB, randNumber);

  randomSeed(analogRead(0));
  randNumber = random(255);
  delay(random(20));
}