/*

this sketch randomly turns on one of the connected LEDs (see the array 'ledPin')
and it also turns on a motor connected to a PWM output (see the ing 'motorPin')
to a randomized strenth 

 */
 

int ledPin[] = {5, 6, 7, 8, 9, 10};                // choose the pin for the LED
int LED_PIN_NUM = 6;
int motorPin = 11;
int inputPin = 2;               // choose the input pin (for a pushbutton)
int val = 0;                    // variable for reading the pin status
int ledNum = 0;
int motorPow = 0;

void setup() {
  Serial.begin(9600);
  int k = 0;
  for (k=0;k<LED_PIN_NUM;k++) {pinMode(ledPin[k], OUTPUT); }     // declare LED as output
  pinMode(inputPin, INPUT);     // declare pushbutton as input
}

void loop(){
  val = digitalRead(inputPin);  // read input value
  if (val == HIGH) {            // check if the input is HIG
    ledNum = random(0, LED_PIN_NUM-1);
    motorPow = random(0, 255);
    //Serial.println(ledNum);
    //Serial.println(motorPow);
    digitalWrite(ledPin[ledNum], LOW);  // turn LED OFF
    //analogWrite(motorPin,0);
  } 
  
  else {
    digitalWrite(ledPin[ledNum], HIGH); // turn LED ON
    analogWrite(motorPin,motorPow);
  }
}