Electric Dice Using Led and an Arduino Board

This is a simple project where we will use basic electric components to make a custom electric dice. The dice will light up the led to display random numbers. For a simple simulation of this project using wokwi copy the link https://wokwi.com/projects/353649248291225601

• Arduino board (Arduino Uno or similar)
• Breadboard and jumper wires
• 7 LEDs (any color of your choice)
• 7 x 220-ohm resistors (or higher, depending on the LED specifications)
• Push-button

1. Connect the positive (anode) leg of each LED to a separate digital pin(from D2 to D8) on the Arduino through its corresponding 220-ohm resistor.
2. Connect the middle led to 5, top left led to 2, top right led to 3, middle left led to 4, middle right led to 6, bottom left led to 7 and bottom right led to 8.
3. Connect the negative (cathode) leg of all LEDs to the common ground (GND) on the breadboard.
4. Connect one terminal of the push-button switch to A0 pin on the Arduino, and the other terminal to the common ground (GND).

const int buttonPin = A0;// button pin

const int LEDpins[] = {2, 3, 4, 5, 6, 7, 8};// led pins

void setup() {

  pinMode(buttonPin, INPUT_PULLUP);// declaring button pin as input

  for (int i = 0; i < 7; i++) {

    pinMode(LEDpins[i], OUTPUT);//declaring led pins as output

  }

  for (int i = 0;  i < 7; i++)

  {

    digitalWrite(LEDpins[i], LOW);// turing off all the leds

  }

}

bool firstTime = true;

void displayNumber(byte number) {         // function for displaying numbers

  digitalWrite(2, number > 1 ? HIGH : LOW);

  digitalWrite(3, number > 3 ? HIGH : LOW);

  digitalWrite(4, number == 6 ? HIGH : LOW);

  digitalWrite(5, number % 2 == 1 ? HIGH : LOW);

  digitalWrite(6, number == 6 ? HIGH : LOW);

  digitalWrite(7, number > 3 ? HIGH : LOW);

  digitalWrite(8, number > 1 ? HIGH : LOW);

}

void loop() {

  while (digitalRead(A0) == HIGH) {

    // do nothing

  }

  if (firstTime) {

    randomSeed(micros());// to increase randomness

    firstTime = false;

  }

  for (byte i = 0; i < 10; i++) {

    int num = random(1, 7);//gives a random number from 1 to 6

    displayNumber(num);

    delay(50 + 20 * i);

  }

}

Congratulations! You have successfully created your own electrical dice using LEDs. This fun and simple project is a great way to learn about basic electronics, coding, and creating interactive circuits. You can further customize your electrical dice by adding more LEDs, changing LED colors, or even creating different animations for each number. Have fun experimenting and exploring .