Random

/*
 * Britney Beatey
 * Version 3
 * Random
 */
 const int pinLed1 = 7;
 const int pinLed2 = 5;
 const int pinLed3 = 3;
 const int pinButt = 10;
 boolean buttDown = 0;
 boolean ledOn = 0;
 boolean lastButt = 0;
 int counter = 0;


void setup() {
  // put your setup code here, to run once:
  pinMode (pinLed1, OUTPUT);
  pinMode (pinLed2, OUTPUT);
  pinMode (pinLed3, OUTPUT);
  pinMode (pinButt, INPUT);

  Serial.begin (9600);
 randomSeed (analogRead(A0));

  digitalWrite (pinLed1, HIGH);
  digitalWrite (pinLed2, HIGH);
  digitalWrite (pinLed3, HIGH);
  delay (500);
  digitalWrite (pinLed1, LOW);
  digitalWrite (pinLed2, LOW);
  digitalWrite (pinLed3, LOW);
}

void loop() {
  // put your main code here, to run repeatedly:
buttDown = debounce (lastButt);
  Serial.println (buttDown);

if (lastButt == LOW && buttDown == HIGH)    // Checks case the button has been pressed
{
  counter = random(1,5);
}
  switch (counter)
{

  case 1:

  digitalWrite (pinLed1, HIGH);
  digitalWrite (pinLed2, LOW);
  digitalWrite (pinLed3, LOW);
  break;

  case 2:

  digitalWrite (pinLed1, HIGH);
  digitalWrite (pinLed2, HIGH);
  digitalWrite (pinLed3, LOW);
  break;

   case 3:

  digitalWrite (pinLed1, HIGH);
  digitalWrite (pinLed2, HIGH);
  digitalWrite (pinLed3, HIGH);
   break;

   case 4:

  digitalWrite (pinLed1, LOW);
  digitalWrite (pinLed2, LOW);
  digitalWrite (pinLed3, LOW);
  counter = 0;
  break;
  default:
  Serial.println("You are out of space");

  lastButt = buttDown;

  }

}

boolean debounce(boolean last)
{
  boolean current = digitalRead(pinButt);
  if (last != current)
  {
    delay(5);
    current = digitalRead(pinButt);
  }
  return current;
}