Basic Breadboard LED Jack O' Lantern

This project creates a 3D Printed Jack O' Lantern that lights up with 3 small LED Lights!

Materials

3D Printer with any color filament of your choice

Arduino Uno

Breadboard

7 Breadboard wires

3 LED Lights

6 220Ω Resistor

Using your 3D Printer, print any hollow Jack O Lantern. I used this Thingiverse Model: https://www.thingiverse.com/thing:1064249 ! Set the Y on the model to 50mm, and scale the model appropriately. Use a color you want your Jack O Lantern to look like!

As the print finishes, set up the breadboard as shown above!

Use any color LED that matches with your 3D Print. My Jack o Lantern was yellow, so I chose red and yellow LED lights!

Input the following code into the Arduino Uno:

int BASE = 2 ; 

int NUM = 3; 

void setup()

{

  for (int i = BASE; i < BASE + NUM; i ++)

  {

    pinMode(i, OUTPUT); 

  }

}

void loop()

{

  for (int i = BASE; i < BASE + NUM; i ++)

  {

    digitalWrite(i, LOW);   

    delay(30);      

  }

  for (int i = BASE; i < BASE + NUM; i ++)

  {

    digitalWrite(i, HIGH);   

    delay(30);       

  } 

}

This program will make your LEDs blink at a rapid pace, imitating a candle! Verify the code by clicking the checkmark button at the top left corner of the window to make sure you did not copy the code incorrectly.

Place the 3D printed jack o lantern on top of the LEDs on the breadboard. You did it!