Introduction

An Electronic Dice is a digital version of a traditional dice used in board games. Instead of rolling a physical cube, this electronic system generates random numbers and displays them using LEDs. It eliminates mechanical wear and provides a fun and educational way to understand digital electronics.

This project is ideal for beginners as it introduces concepts such as random number generation, counters, LEDs, and microcontrollers.

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Objective of the Project

The main objectives of this project are:

• To generate random numbers between 1 and 6.
• To display dice numbers using LED patterns.
• To understand digital counting and timing circuits.
• To design a simple and interactive electronic game device.

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Working Principle

The Electronic Dice works by generating a rapid counting sequence and stopping at a random value when a button is pressed.

Method 1: Using IC (555 Timer + Counter IC)

• A 555 timer generates clock pulses.
• A counter IC (like CD4017) counts these pulses.
• When the push button is released, the count stops.
• LEDs connected to the outputs display a random dice number.

Method 2: Using Arduino

• Arduino generates a random number using software.
• The number (1–6) is displayed using LEDs.
• A push button is used to “roll” the dice.

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Components Required

IC-Based Electronic Dice

• 555 Timer IC
• CD4017 Decade Counter IC
• LEDs (7 LEDs for dice pattern)
• Resistors (220Ω)
• Push Button
• Capacitors
• Power Supply (5V)
• Breadboard & wires

Arduino-Based Electronic Dice

• Arduino Uno
• LEDs (7)
• Resistors (220Ω)
• Push Button
• Jumper wires

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Circuit Diagram

IC-Based Circuit (Conceptual)

555 Timer ---> Clock ---> CD4017 Counter
CD4017 Outputs ---> LED Pattern (Dice Display)
Push Button ---> Reset / Enable

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Arduino-Based Circuit

Button ---- Arduino D2
LED1 ------ Arduino D4
LED2 ------ Arduino D5
LED3 ------ Arduino D6
LED4 ------ Arduino D7
LED5 ------ Arduino D8
LED6 ------ Arduino D9
LED7 ------ Arduino D10
GND ------- Common Ground

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Arduino Code for Electronic Dice

int buttonPin = 2;
int leds[] = {4,5,6,7,8,9,10};
int diceNumber = 0;

void setup() {
  pinMode(buttonPin, INPUT_PULLUP);
  for (int i = 0; i < 7; i++) {
    pinMode(leds[i], OUTPUT);
  }
  randomSeed(analogRead(A0));
}

void loop() {
  if (digitalRead(buttonPin) == LOW) {
    diceNumber = random(1,7);
    displayDice(diceNumber);
    delay(500);
  }
}

void displayDice(int num) {
  for (int i = 0; i < 7; i++) {
    digitalWrite(leds[i], LOW);
  }

  if (num == 1) digitalWrite(leds[3], HIGH);
  if (num == 2) { digitalWrite(leds[0], HIGH); digitalWrite(leds[6], HIGH); }
  if (num == 3) { digitalWrite(leds[0], HIGH); digitalWrite(leds[3], HIGH); digitalWrite(leds[6], HIGH); }
  if (num == 4) { digitalWrite(leds[0], HIGH); digitalWrite(leds[2], HIGH); digitalWrite(leds[4], HIGH); digitalWrite(leds[6], HIGH); }
  if (num == 5) { digitalWrite(leds[0], HIGH); digitalWrite(leds[2], HIGH); digitalWrite(leds[3], HIGH); digitalWrite(leds[4], HIGH); digitalWrite(leds[6], HIGH); }
  if (num == 6) {
    digitalWrite(leds[0], HIGH);
    digitalWrite(leds[1], HIGH);
    digitalWrite(leds[2], HIGH);
    digitalWrite(leds[4], HIGH);
    digitalWrite(leds[5], HIGH);
    digitalWrite(leds[6], HIGH);
  }
}

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Advantages

• No mechanical parts
• Random and fair output
• Long lifespan
• Educational and fun
• Compact and portable

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Applications

• Board and dice games
• Educational electronics kits
• Digital gaming devices
• Learning random number generation

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Conclusion

The Electronic Dice project is a creative and engaging way to learn digital electronics and microcontroller programming. It combines logic, randomness, and visual display in a simple project that can be expanded using displays, sound effects, or wireless control.