Arduino Binary to Decimal Converter

Overview

This project demonstrates how to represent a decimal number (from 0 to 15) as a 4-bit binary output using an Arduino. It uses four LEDs connected to GPIO pins to display the binary equivalent of the given decimal number. The user inputs a number through the Serial Monitor, and the corresponding binary representation is shown on the LEDs.

Features

1.Converts decimal numbers (0-15) to their binary representation

2.Displays the binary output using four LEDs

3.Simple serial communication for input

4.Error handling for invalid inputs

Components Used

Arduino Board,4 LEDs,4 Resistors (220Ω each),

Connecting Wires

USB Cable for Programming

Circuit Connections

Pin 8 -> LED 1 (LSB)

Pin 9 -> LED 2

Pin 10 -> LED 3

Pin 11 -> LED 4 (MSB)

Connect the other side of each LED to GND through a 220Ω resistor.

Working Principle

The user enters a number between 0 and 15 using the Serial Monitor.

The Arduino reads the input using Serial.parseInt().

Using a switch statement, it controls the LEDs by writing HIGH or LOW to the corresponding pins.

If the input is outside the 0-15 range, an error message is displayed.

Code Explanation

1.Pin Initialization: int pin1 = 8, pin2 = 9, pin3 = 10, pin4 = 11;

2.Serial Communication: Serial.begin(9600);

3.Switch Case for Binary Representation:

Based on the input, the LEDs are controlled using digitalWrite() statements.

4.Error Handling: If the user enters a number outside the valid range, it prints an error message using Serial.println().

Conclusion

This project provides a simple yet effective way to demonstrate how binary numbers are represented and visualized using LEDs. It's a great educational tool for beginners to understand number systems and Arduino programming.