Christmas Lights

Required Materials:

• 1 small nativity scene;
• 1 Arduino Nano;
• 9 Leds 5mm, in the colors of your choice;
• 1 Passive Buzzer 5V.

You can make your own nativity scene, using a shoe box, residue of sharpened pencil and your creativity.

Arduino Circuit:

Arduino Code:

• Firstly, all the leds are turned on and off to certify that all of them are working properly;

  for(int i = 0; i < TOTAL_LEDS; i++){
        digitalWrite(leds[i], HIGH);
        delay(350);
        digitalWrite(leds[i], LOW);
  }

• Then, a part of the song "Jingle Bells" is played. Each tone has its corresponding leds;

  playSong(void);

• And in the loop function, all the leds are blinked.

  blinkAll(int delayTime);

You can add new functions to blink the leds in different ways. There are many possibilities.

Video