Electronic Dream Catcher

Are your kids affraid of getting a nightmare ??
The Electronic Dream Catcher will find and destroy those nasty dreams...

Watch the video
https://youtu.be/F4Jhq9ucp9Y

Step 1: Parts

Well, This is rather easy one, you'll need very few things :

-3 220ohm Resistors
-White led
-Red led
-Orange led
-Piezo speaker
-Arduino Pro Mini
-a Switch
-and some battaries.

-A Project Box
-Tubes
-Papper Clip
-Shrinking Tubes

The connections are very simple, you can follow the diagram.
The "Special Dream Catcher part is constuct of 3 Leds, one inside each tube, held together withe the papper clip.
At bouth sides of the tubes i made a closer using shrinking tubes and glue it all together to the box.

Step 2: The Code...

#define orangePin 11

#define redPin 9
#define whitePin 10
#define SPKpin 3

int pinChange;
volatile int BadDreamsCount, DCounter;

void setup() {
  pinMode (orangePin, OUTPUT);
  pinMode (redPin, OUTPUT);
  pinMode (whitePin, OUTPUT);
  pinMode (SPKpin, OUTPUT);
  pinMode (2, INPUT_PULLUP);
  Serial.begin (9600);
  randomSeed(millis());
  BadDreamsCount = random (1, 5);
}

void loop() {
  randomSeed(millis());

  dreamsScan();
  if (random (1,100) <= 10 && DCounter <= BadDreamsCount) {
    CND();
    DCounter ++;
    Serial.print ("BadDreamsCount = ");
    Serial.print (BadDreamsCount);
    Serial.print ("  DCounter = ");
    Serial.println (DCounter);
  }

  zero();
  noTone (SPKpin);
}

//  Catch and Destroy animation procedure
void CND() {
  randomSeed(millis());
  //  Closing on the dream
  for (int a=200; a>=30; a=a-10) {
    Serial.println (a);
    digitalWrite (orangePin, HIGH);
    digitalWrite (redPin, LOW);
    tone (SPKpin, 500-a);
    delay (a);
    digitalWrite (orangePin, LOW);
    digitalWrite (redPin, HIGH);
    delay (a);
    //noTone(SPKpin);
  }
  // Holding it
  tone (SPKpin, 300, 4000);
  for (int a=1; a<=50; a++) {
    digitalWrite (orangePin, HIGH);
    digitalWrite (redPin, LOW);
    delay (30);
    digitalWrite (orangePin, LOW);
    digitalWrite (redPin, HIGH);
    delay (30);
    //noTone (SPKpin);
  }
  //  ZAPPING it
  for (int a=1; a<= random (10, 50); a++) {
    analogWrite (whitePin, random (10, 255));
    tone (SPKpin, random (20,300));
    delay (30);
  }
  noTone (SPKpin);
  zero ();
}

// Turning all lights off
void zero() {
  digitalWrite (orangePin, LOW);
  digitalWrite (redPin, LOW);
  digitalWrite (whitePin, LOW);
}

// Scan for deam animation procedure
void dreamsScan() {
  tone (SPKpin, 2000, 100);
  for (int i=9; i<=11; i++){
    /* digitalWrite (i, !digitalRead(i));
    digitalWrite (i, !digitalRead(i));
    digitalWrite (i, !digitalRead(i));
    Serial.println (i); 
    delay (200); */

    digitalWrite (orangePin, HIGH);
    digitalWrite (redPin, LOW);
    delay (400);
    digitalWrite (orangePin, LOW);
    digitalWrite (redPin, HIGH);
    delay (400);
  }
}