Binary to Decimal Converter using Arduino and OLED Display

This project shows how to convert a Binary number (Up to 8 Bits) into a Decimal number using Arduino.

May 22, 2021

•

10959 views

•

1 respects

binary

decimal

dip switch

Devices & Components

Arduino Uno Rev3

8x DIP Switch

Breadboard (generic)

Jumper wires (generic)

Resistor 220 ohm

OLED Display (I2C)

Software & Tools

Arduino IDE

Project description

Code

arduino

1/*
2
3  This sketch converts an 8-Bit Binary number into a Decimal   number.
4  The Binary number is fed to the Arduino through an 8x DIP Switch.
5   A function then converts this Binary number to its Decimal
6  equivalent. These   numbers are displayed on an OLED Display and Serial   Monitor.
7
8  This program   is made by Shreyas for Electronics Champ YouTube Channel.
9  Please subscribe   to this channel. Thank You.
10
11*/
12
13//Include the libraries
14#include   <Wire.h>
15#include <Adafruit_GFX.h>
16#include <Adafruit_SSD1306.h>
17
18//Initialize   the variables
19int bitVal;
20String stringBit;
21String stringBinary;
22long   binaryNumber;
23int decimalNumber;
24
25#define SCREEN_WIDTH 128
26#define SCREEN_HEIGHT   64
27
28Adafruit_SSD1306 oled(SCREEN_WIDTH, SCREEN_HEIGHT);
29
30//Prints the   EChamp logo on OLED Display
31static const uint8_t PROGMEM logo[] = {
32
33  0x00,   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,   0x00,
34  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,   0x00, 0x00, 0x00, 0x00,
35  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
36  0x00, 0x00, 0x00, 0x00, 0x00, 0x00,   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
37  0x00, 0x00, 0x00,   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
38   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,   0x00, 0x00, 0x00,
39  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,   0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
40  0x00, 0x00, 0x07, 0xe8, 0x00, 0x00, 0x00,   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
41  0x00, 0x00, 0xff, 0xff,   0xe0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
42  0x00,   0x01, 0xff, 0xff, 0xf0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,   0x00,
43  0x00, 0x07, 0xff, 0xff, 0xfc, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,   0x00, 0x00, 0x00, 0x00,
44  0x00, 0x1f, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00,   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
45  0x00, 0x7f, 0xff, 0xff, 0xff, 0xc0,   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
46  0x00, 0xff, 0xff,   0xff, 0xff, 0xe0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
47   0x01, 0xff, 0xff, 0xff, 0xff, 0xf0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,   0x00, 0x00, 0x00,
48  0x03, 0xff, 0xff, 0xff, 0xff, 0xf8, 0x00, 0x00, 0x00, 0x00,   0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
49  0x07, 0xfc, 0x11, 0xf1, 0x0f, 0xfc, 0x00,   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x30, 0x00, 0x00,
50  0x0f, 0xfc, 0xf1, 0xf1,   0xe7, 0xfe, 0x00, 0x7e, 0x60, 0x00, 0x30, 0x00, 0x00, 0x30, 0x00, 0x00,
51  0x1f,   0xfd, 0xfb, 0xf3, 0xe7, 0xff, 0x00, 0x60, 0x60, 0x00, 0x30, 0x00, 0x00, 0x00, 0x00,   0x00,
52  0x1f, 0xfd, 0xff, 0xff, 0xe7, 0xff, 0x00, 0x60, 0x63, 0x87, 0xbb, 0xc7,   0x1f, 0x33, 0xcf, 0x00,
53  0x3f, 0xfd, 0xff, 0xff, 0xe7, 0xff, 0x80, 0x60, 0x66,   0xcd, 0xb3, 0x4d, 0x9b, 0x36, 0xdb, 0x00,
54  0x3f, 0xfd, 0xf9, 0xf3, 0xe7, 0xff,   0x80, 0x7e, 0x64, 0x48, 0x33, 0x08, 0x99, 0x34, 0x18, 0x00,
55  0x7e, 0x40, 0x11,   0xf1, 0x20, 0x1f, 0xc0, 0x60, 0x67, 0xc8, 0x33, 0x08, 0x99, 0x34, 0x1f, 0x00,
56   0x7e, 0x7d, 0xf9, 0xf3, 0xe7, 0xdf, 0xc0, 0x60, 0x64, 0x08, 0x33, 0x08, 0x99,   0x34, 0x01, 0x00,
57  0x7e, 0x7d, 0xfb, 0xff, 0xe7, 0xdf, 0xc0, 0x60, 0x66, 0xcd,   0xb3, 0x0d, 0x99, 0x36, 0xdb, 0x00,
58  0x7e, 0x7d, 0xff, 0xff, 0xe7, 0xdf, 0xc0,   0x7e, 0x63, 0xc7, 0xbb, 0x07, 0x19, 0x33, 0xde, 0x00,
59  0x7e, 0x7d, 0xf9, 0xf3,   0xe7, 0xdf, 0xe0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
60  0xfe,   0x7c, 0xf1, 0xf1, 0x67, 0xdf, 0xe0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,   0x00,
61  0xfe, 0x7e, 0x11, 0xf1, 0x0f, 0xdf, 0xe0, 0x00, 0x00, 0x00, 0x00, 0x00,   0x00, 0x00, 0x00, 0x00,
62  0xfe, 0x7f, 0xfb, 0xf3, 0xff, 0xdf, 0xe0, 0x00, 0x00,   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
63  0xfe, 0x7f, 0xff, 0xff, 0xff, 0xdf,   0xe0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
64  0xfe, 0x7f, 0xff,   0xff, 0xff, 0xdf, 0xe0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
65   0xfe, 0x7f, 0xff, 0xff, 0xff, 0xdf, 0xe0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,   0x00, 0x00, 0x00,
66  0xfe, 0x7f, 0xff, 0xff, 0xff, 0xdf, 0xe0, 0x00, 0x00, 0x00,   0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
67  0xfe, 0x7f, 0xff, 0xff, 0xff, 0xdf, 0xe0,   0x3c, 0x60, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
68  0x7e, 0x7f, 0xff, 0xff,   0x7f, 0xdf, 0xe0, 0x7e, 0x60, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
69  0x7e,   0x7f, 0x27, 0xf8, 0x9f, 0xdf, 0xc0, 0x62, 0x7c, 0x71, 0xf7, 0x3e, 0x00, 0x00, 0x00,   0x00,
70  0x7e, 0x7e, 0xf1, 0xe1, 0xcf, 0xdf, 0xc0, 0x60, 0x6c, 0x59, 0xbb, 0x36,   0x00, 0x00, 0x00, 0x00,
71  0x7e, 0x7e, 0xf8, 0xe3, 0xef, 0xdf, 0xc0, 0x60, 0x64,   0x09, 0x91, 0x32, 0x00, 0x00, 0x00, 0x00,
72  0x3e, 0x7c, 0xf9, 0xf3, 0xef, 0xdf,   0x80, 0x60, 0x64, 0xf9, 0x91, 0x32, 0x00, 0x00, 0x00, 0x00,
73  0x3f, 0x01, 0xff,   0xff, 0xe0, 0x1f, 0x80, 0x62, 0x64, 0x89, 0x91, 0x32, 0x00, 0x00, 0x00, 0x00,
74   0x1f, 0xfc, 0xf9, 0xf3, 0xef, 0xff, 0x80, 0x7e, 0x64, 0x99, 0x91, 0x36, 0x00,   0x00, 0x00, 0x00,
75  0x1f, 0xfe, 0xf8, 0xe3, 0xef, 0xff, 0x00, 0x3c, 0x64, 0xf9,   0x91, 0x3e, 0x00, 0x00, 0x00, 0x00,
76  0x0f, 0xfe, 0x71, 0xf1, 0xdf, 0xff, 0x00,   0x00, 0x00, 0x00, 0x00, 0x30, 0x00, 0x00, 0x00, 0x00,
77  0x0f, 0xff, 0x01, 0xfc,   0x3f, 0xfe, 0x00, 0x00, 0x00, 0x00, 0x00, 0x30, 0x00, 0x00, 0x00, 0x00,
78  0x07,   0xff, 0xff, 0xff, 0xff, 0xfc, 0x00, 0x00, 0x00, 0x00, 0x00, 0x20, 0x00, 0x00, 0x00,   0x00,
79  0x03, 0xff, 0xff, 0xff, 0xff, 0xf8, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,   0x00, 0x00, 0x00, 0x00,
80  0x01, 0xff, 0xff, 0xff, 0xff, 0xf0, 0x00, 0x00, 0x00,   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
81  0x00, 0xff, 0xff, 0xff, 0xff, 0xe0,   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
82  0x00, 0x7f, 0xff,   0xff, 0xff, 0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
83   0x00, 0x1f, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,   0x00, 0x00, 0x00,
84  0x00, 0x07, 0xff, 0xff, 0xfc, 0x00, 0x00, 0x00, 0x00, 0x00,   0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
85  0x00, 0x00, 0xff, 0xff, 0xe0, 0x00, 0x00,   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
86  0x00, 0x00, 0x7f, 0xff,   0xc0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
87  0x00,   0x00, 0x00, 0x40, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,   0x00,
88  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,   0x00, 0x00, 0x00, 0x00,
89  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
90  0x00, 0x00, 0x00, 0x00, 0x00, 0x00,   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
91  0x00, 0x00, 0x00,   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
92   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,   0x00, 0x00, 0x00,
93  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,   0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
94  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
95  0x00, 0x00, 0x00, 0x00,   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
96  0x00,   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,   0x00
97
98};
99
100void setup() {
101
102  Serial.begin(9600);
103
104  //Sets   pin 3 to pin 10 as input
105  for (int x = 3; x < 11; x++) {
106
107    pinMode(x,   INPUT);
108
109  }
110
111  oled.begin(SSD1306_SWITCHCAPVCC, 0x3C);
112  oled.clearDisplay();
113
114   //Prints the logo on OLED Display
115  oled.drawBitmap(0, 0, logo, 128, 64, 1);
116   oled.display();
117  delay(3000);
118  oled.clearDisplay();
119
120}
121
122void   loop() {
123
124  //Reads the Binary number from the DIP Switch
125  for (int x   = 3; x < 11; x++) {
126
127    bitVal = digitalRead(x);
128    stringBit = String(bitVal);
129     stringBinary = stringBinary + stringBit;
130    binaryNumber = stringBinary.toInt();
131
132   }
133
134  //Function to convert Binary to Decimal
135  decimalNumber = convertBinaryToDecimal(binaryNumber);
136
137   //Prints the Binary number on the Serial Monitor
138  Serial.print("Binary: ");
139   Serial.print(stringBinary);
140  Serial.print("      ");
141
142  //Prints the   Decimal number on the Serial Monitor
143  Serial.print("Decimal: ");
144  Serial.println(decimalNumber);
145
146   //Prints the Binary number on the Serial Monitor
147  oled.clearDisplay();
148   oled.setTextSize(2);
149  oled.setTextColor(WHITE);
150  oled.setCursor(5, 10);
151   oled.print("B:");
152  oled.println(stringBinary);
153
154  //Prints the Decimal   number on the Serial Monitor
155  oled.setTextSize(2);
156  oled.setTextColor(WHITE);
157   oled.setCursor(5, 40);
158  oled.print("D:");
159  oled.println(decimalNumber);
160   oled.display();
161
162  //Resets all the variables
163  binaryNumber = 0;
164   bitVal = 0;
165  stringBit = "";
166  stringBinary = "";
167
168}
169
170//Function   to convert Binary to Decimal
171long convertBinaryToDecimal(long binary) {
172
173   long number = binary;
174  long decimalVal = 0;
175  long baseVal = 1;
176  long   tempVal = number;
177  long previousDigit;
178
179  while (tempVal) {
180
181    //Converts   Binary to Decimal
182    previousDigit = tempVal % 10;
183    tempVal = tempVal   / 10;
184    decimalVal += previousDigit * baseVal;
185    baseVal = baseVal * 2;
186
187   }
188
189  //Returns the Decimal number
190  return decimalVal;
191
192}

/*

  This sketch converts an 8-Bit Binary number into a Decimal   number.
  The Binary number is fed to the Arduino through an 8x DIP Switch.
   A function then converts this Binary number to its Decimal
  equivalent. These   numbers are displayed on an OLED Display and Serial   Monitor.

  This program   is made by Shreyas for Electronics Champ YouTube Channel.
  Please subscribe   to this channel. Thank You.

*/

//Include the libraries
#include   <Wire.h>
#include <Adafruit_GFX.h>
#include <Adafruit_SSD1306.h>

//Initialize   the variables
int bitVal;
String stringBit;
String stringBinary;
long   binaryNumber;
int decimalNumber;

#define SCREEN_WIDTH 128
#define SCREEN_HEIGHT   64

Adafruit_SSD1306 oled(SCREEN_WIDTH, SCREEN_HEIGHT);

//Prints the   EChamp logo on OLED Display
static const uint8_t PROGMEM logo[] = {

  0x00,   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,   0x00,
  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,   0x00, 0x00, 0x00, 0x00,
  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
  0x00, 0x00, 0x00, 0x00, 0x00, 0x00,   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
  0x00, 0x00, 0x00,   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,   0x00, 0x00, 0x00,
  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,   0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
  0x00, 0x00, 0x07, 0xe8, 0x00, 0x00, 0x00,   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
  0x00, 0x00, 0xff, 0xff,   0xe0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
  0x00,   0x01, 0xff, 0xff, 0xf0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,   0x00,
  0x00, 0x07, 0xff, 0xff, 0xfc, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,   0x00, 0x00, 0x00, 0x00,
  0x00, 0x1f, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00,   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
  0x00, 0x7f, 0xff, 0xff, 0xff, 0xc0,   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
  0x00, 0xff, 0xff,   0xff, 0xff, 0xe0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
   0x01, 0xff, 0xff, 0xff, 0xff, 0xf0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,   0x00, 0x00, 0x00,
  0x03, 0xff, 0xff, 0xff, 0xff, 0xf8, 0x00, 0x00, 0x00, 0x00,   0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
  0x07, 0xfc, 0x11, 0xf1, 0x0f, 0xfc, 0x00,   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x30, 0x00, 0x00,
  0x0f, 0xfc, 0xf1, 0xf1,   0xe7, 0xfe, 0x00, 0x7e, 0x60, 0x00, 0x30, 0x00, 0x00, 0x30, 0x00, 0x00,
  0x1f,   0xfd, 0xfb, 0xf3, 0xe7, 0xff, 0x00, 0x60, 0x60, 0x00, 0x30, 0x00, 0x00, 0x00, 0x00,   0x00,
  0x1f, 0xfd, 0xff, 0xff, 0xe7, 0xff, 0x00, 0x60, 0x63, 0x87, 0xbb, 0xc7,   0x1f, 0x33, 0xcf, 0x00,
  0x3f, 0xfd, 0xff, 0xff, 0xe7, 0xff, 0x80, 0x60, 0x66,   0xcd, 0xb3, 0x4d, 0x9b, 0x36, 0xdb, 0x00,
  0x3f, 0xfd, 0xf9, 0xf3, 0xe7, 0xff,   0x80, 0x7e, 0x64, 0x48, 0x33, 0x08, 0x99, 0x34, 0x18, 0x00,
  0x7e, 0x40, 0x11,   0xf1, 0x20, 0x1f, 0xc0, 0x60, 0x67, 0xc8, 0x33, 0x08, 0x99, 0x34, 0x1f, 0x00,
   0x7e, 0x7d, 0xf9, 0xf3, 0xe7, 0xdf, 0xc0, 0x60, 0x64, 0x08, 0x33, 0x08, 0x99,   0x34, 0x01, 0x00,
  0x7e, 0x7d, 0xfb, 0xff, 0xe7, 0xdf, 0xc0, 0x60, 0x66, 0xcd,   0xb3, 0x0d, 0x99, 0x36, 0xdb, 0x00,
  0x7e, 0x7d, 0xff, 0xff, 0xe7, 0xdf, 0xc0,   0x7e, 0x63, 0xc7, 0xbb, 0x07, 0x19, 0x33, 0xde, 0x00,
  0x7e, 0x7d, 0xf9, 0xf3,   0xe7, 0xdf, 0xe0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
  0xfe,   0x7c, 0xf1, 0xf1, 0x67, 0xdf, 0xe0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,   0x00,
  0xfe, 0x7e, 0x11, 0xf1, 0x0f, 0xdf, 0xe0, 0x00, 0x00, 0x00, 0x00, 0x00,   0x00, 0x00, 0x00, 0x00,
  0xfe, 0x7f, 0xfb, 0xf3, 0xff, 0xdf, 0xe0, 0x00, 0x00,   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
  0xfe, 0x7f, 0xff, 0xff, 0xff, 0xdf,   0xe0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
  0xfe, 0x7f, 0xff,   0xff, 0xff, 0xdf, 0xe0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
   0xfe, 0x7f, 0xff, 0xff, 0xff, 0xdf, 0xe0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,   0x00, 0x00, 0x00,
  0xfe, 0x7f, 0xff, 0xff, 0xff, 0xdf, 0xe0, 0x00, 0x00, 0x00,   0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
  0xfe, 0x7f, 0xff, 0xff, 0xff, 0xdf, 0xe0,   0x3c, 0x60, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
  0x7e, 0x7f, 0xff, 0xff,   0x7f, 0xdf, 0xe0, 0x7e, 0x60, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
  0x7e,   0x7f, 0x27, 0xf8, 0x9f, 0xdf, 0xc0, 0x62, 0x7c, 0x71, 0xf7, 0x3e, 0x00, 0x00, 0x00,   0x00,
  0x7e, 0x7e, 0xf1, 0xe1, 0xcf, 0xdf, 0xc0, 0x60, 0x6c, 0x59, 0xbb, 0x36,   0x00, 0x00, 0x00, 0x00,
  0x7e, 0x7e, 0xf8, 0xe3, 0xef, 0xdf, 0xc0, 0x60, 0x64,   0x09, 0x91, 0x32, 0x00, 0x00, 0x00, 0x00,
  0x3e, 0x7c, 0xf9, 0xf3, 0xef, 0xdf,   0x80, 0x60, 0x64, 0xf9, 0x91, 0x32, 0x00, 0x00, 0x00, 0x00,
  0x3f, 0x01, 0xff,   0xff, 0xe0, 0x1f, 0x80, 0x62, 0x64, 0x89, 0x91, 0x32, 0x00, 0x00, 0x00, 0x00,
   0x1f, 0xfc, 0xf9, 0xf3, 0xef, 0xff, 0x80, 0x7e, 0x64, 0x99, 0x91, 0x36, 0x00,   0x00, 0x00, 0x00,
  0x1f, 0xfe, 0xf8, 0xe3, 0xef, 0xff, 0x00, 0x3c, 0x64, 0xf9,   0x91, 0x3e, 0x00, 0x00, 0x00, 0x00,
  0x0f, 0xfe, 0x71, 0xf1, 0xdf, 0xff, 0x00,   0x00, 0x00, 0x00, 0x00, 0x30, 0x00, 0x00, 0x00, 0x00,
  0x0f, 0xff, 0x01, 0xfc,   0x3f, 0xfe, 0x00, 0x00, 0x00, 0x00, 0x00, 0x30, 0x00, 0x00, 0x00, 0x00,
  0x07,   0xff, 0xff, 0xff, 0xff, 0xfc, 0x00, 0x00, 0x00, 0x00, 0x00, 0x20, 0x00, 0x00, 0x00,   0x00,
  0x03, 0xff, 0xff, 0xff, 0xff, 0xf8, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,   0x00, 0x00, 0x00, 0x00,
  0x01, 0xff, 0xff, 0xff, 0xff, 0xf0, 0x00, 0x00, 0x00,   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
  0x00, 0xff, 0xff, 0xff, 0xff, 0xe0,   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
  0x00, 0x7f, 0xff,   0xff, 0xff, 0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
   0x00, 0x1f, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,   0x00, 0x00, 0x00,
  0x00, 0x07, 0xff, 0xff, 0xfc, 0x00, 0x00, 0x00, 0x00, 0x00,   0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
  0x00, 0x00, 0xff, 0xff, 0xe0, 0x00, 0x00,   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
  0x00, 0x00, 0x7f, 0xff,   0xc0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
  0x00,   0x00, 0x00, 0x40, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,   0x00,
  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,   0x00, 0x00, 0x00, 0x00,
  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
  0x00, 0x00, 0x00, 0x00, 0x00, 0x00,   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
  0x00, 0x00, 0x00,   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,   0x00, 0x00, 0x00,
  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,   0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
  0x00, 0x00, 0x00, 0x00,   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
  0x00,   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,   0x00

};

void setup() {

  Serial.begin(9600);

  //Sets   pin 3 to pin 10 as input
  for (int x = 3; x < 11; x++) {

    pinMode(x,   INPUT);

  }

  oled.begin(SSD1306_SWITCHCAPVCC, 0x3C);
  oled.clearDisplay();

   //Prints the logo on OLED Display
  oled.drawBitmap(0, 0, logo, 128, 64, 1);
   oled.display();
  delay(3000);
  oled.clearDisplay();

}

void   loop() {

  //Reads the Binary number from the DIP Switch
  for (int x   = 3; x < 11; x++) {

    bitVal = digitalRead(x);
    stringBit = String(bitVal);
     stringBinary = stringBinary + stringBit;
    binaryNumber = stringBinary.toInt();

   }

  //Function to convert Binary to Decimal
  decimalNumber = convertBinaryToDecimal(binaryNumber);

   //Prints the Binary number on the Serial Monitor
  Serial.print("Binary: ");
   Serial.print(stringBinary);
  Serial.print("      ");

  //Prints the   Decimal number on the Serial Monitor
  Serial.print("Decimal: ");
  Serial.println(decimalNumber);

   //Prints the Binary number on the Serial Monitor
  oled.clearDisplay();
   oled.setTextSize(2);
  oled.setTextColor(WHITE);
  oled.setCursor(5, 10);
   oled.print("B:");
  oled.println(stringBinary);

  //Prints the Decimal   number on the Serial Monitor
  oled.setTextSize(2);
  oled.setTextColor(WHITE);
   oled.setCursor(5, 40);
  oled.print("D:");
  oled.println(decimalNumber);
   oled.display();

  //Resets all the variables
  binaryNumber = 0;
   bitVal = 0;
  stringBit = "";
  stringBinary = "";

}

//Function   to convert Binary to Decimal
long convertBinaryToDecimal(long binary) {

   long number = binary;
  long decimalVal = 0;
  long baseVal = 1;
  long   tempVal = number;
  long previousDigit;

  while (tempVal) {

    //Converts   Binary to Decimal
    previousDigit = tempVal % 10;
    tempVal = tempVal   / 10;
    decimalVal += previousDigit * baseVal;
    baseVal = baseVal * 2;

   }

  //Returns the Decimal number
  return decimalVal;

}

Code

arduino

1/*
2
3  This sketch converts an 8-Bit Binary number into a Decimal  number.
4  The Binary number is fed to the Arduino through an 8x DIP Switch.
5  A function then converts this Binary number to its Decimal
6  equivalent. These  numbers are displayed on an OLED Display and Serial   Monitor.
7
8  This program  is made by Shreyas for Electronics Champ YouTube Channel.
9  Please subscribe  to this channel. Thank You.
10
11*/
12
13//Include the libraries
14#include  <Wire.h>
15#include <Adafruit_GFX.h>
16#include <Adafruit_SSD1306.h>
17
18//Initialize  the variables
19int bitVal;
20String stringBit;
21String stringBinary;
22long  binaryNumber;
23int decimalNumber;
24
25#define SCREEN_WIDTH 128
26#define SCREEN_HEIGHT  64
27
28Adafruit_SSD1306 oled(SCREEN_WIDTH, SCREEN_HEIGHT);
29
30//Prints the  EChamp logo on OLED Display
31static const uint8_t PROGMEM logo[] = {
32
33  0x00,  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  0x00,
34  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  0x00, 0x00, 0x00, 0x00,
35  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
36  0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
37  0x00, 0x00, 0x00,  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
38  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  0x00, 0x00, 0x00,
39  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
40  0x00, 0x00, 0x07, 0xe8, 0x00, 0x00, 0x00,  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
41  0x00, 0x00, 0xff, 0xff,  0xe0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
42  0x00,  0x01, 0xff, 0xff, 0xf0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  0x00,
43  0x00, 0x07, 0xff, 0xff, 0xfc, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  0x00, 0x00, 0x00, 0x00,
44  0x00, 0x1f, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00,  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
45  0x00, 0x7f, 0xff, 0xff, 0xff, 0xc0,  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
46  0x00, 0xff, 0xff,  0xff, 0xff, 0xe0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
47  0x01, 0xff, 0xff, 0xff, 0xff, 0xf0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  0x00, 0x00, 0x00,
48  0x03, 0xff, 0xff, 0xff, 0xff, 0xf8, 0x00, 0x00, 0x00, 0x00,  0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
49  0x07, 0xfc, 0x11, 0xf1, 0x0f, 0xfc, 0x00,  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x30, 0x00, 0x00,
50  0x0f, 0xfc, 0xf1, 0xf1,  0xe7, 0xfe, 0x00, 0x7e, 0x60, 0x00, 0x30, 0x00, 0x00, 0x30, 0x00, 0x00,
51  0x1f,  0xfd, 0xfb, 0xf3, 0xe7, 0xff, 0x00, 0x60, 0x60, 0x00, 0x30, 0x00, 0x00, 0x00, 0x00,  0x00,
52  0x1f, 0xfd, 0xff, 0xff, 0xe7, 0xff, 0x00, 0x60, 0x63, 0x87, 0xbb, 0xc7,  0x1f, 0x33, 0xcf, 0x00,
53  0x3f, 0xfd, 0xff, 0xff, 0xe7, 0xff, 0x80, 0x60, 0x66,  0xcd, 0xb3, 0x4d, 0x9b, 0x36, 0xdb, 0x00,
54  0x3f, 0xfd, 0xf9, 0xf3, 0xe7, 0xff,  0x80, 0x7e, 0x64, 0x48, 0x33, 0x08, 0x99, 0x34, 0x18, 0x00,
55  0x7e, 0x40, 0x11,  0xf1, 0x20, 0x1f, 0xc0, 0x60, 0x67, 0xc8, 0x33, 0x08, 0x99, 0x34, 0x1f, 0x00,
56  0x7e, 0x7d, 0xf9, 0xf3, 0xe7, 0xdf, 0xc0, 0x60, 0x64, 0x08, 0x33, 0x08, 0x99,  0x34, 0x01, 0x00,
57  0x7e, 0x7d, 0xfb, 0xff, 0xe7, 0xdf, 0xc0, 0x60, 0x66, 0xcd,  0xb3, 0x0d, 0x99, 0x36, 0xdb, 0x00,
58  0x7e, 0x7d, 0xff, 0xff, 0xe7, 0xdf, 0xc0,  0x7e, 0x63, 0xc7, 0xbb, 0x07, 0x19, 0x33, 0xde, 0x00,
59  0x7e, 0x7d, 0xf9, 0xf3,  0xe7, 0xdf, 0xe0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
60  0xfe,  0x7c, 0xf1, 0xf1, 0x67, 0xdf, 0xe0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  0x00,
61  0xfe, 0x7e, 0x11, 0xf1, 0x0f, 0xdf, 0xe0, 0x00, 0x00, 0x00, 0x00, 0x00,  0x00, 0x00, 0x00, 0x00,
62  0xfe, 0x7f, 0xfb, 0xf3, 0xff, 0xdf, 0xe0, 0x00, 0x00,  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
63  0xfe, 0x7f, 0xff, 0xff, 0xff, 0xdf,  0xe0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
64  0xfe, 0x7f, 0xff,  0xff, 0xff, 0xdf, 0xe0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
65  0xfe, 0x7f, 0xff, 0xff, 0xff, 0xdf, 0xe0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  0x00, 0x00, 0x00,
66  0xfe, 0x7f, 0xff, 0xff, 0xff, 0xdf, 0xe0, 0x00, 0x00, 0x00,  0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
67  0xfe, 0x7f, 0xff, 0xff, 0xff, 0xdf, 0xe0,  0x3c, 0x60, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
68  0x7e, 0x7f, 0xff, 0xff,  0x7f, 0xdf, 0xe0, 0x7e, 0x60, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
69  0x7e,  0x7f, 0x27, 0xf8, 0x9f, 0xdf, 0xc0, 0x62, 0x7c, 0x71, 0xf7, 0x3e, 0x00, 0x00, 0x00,  0x00,
70  0x7e, 0x7e, 0xf1, 0xe1, 0xcf, 0xdf, 0xc0, 0x60, 0x6c, 0x59, 0xbb, 0x36,  0x00, 0x00, 0x00, 0x00,
71  0x7e, 0x7e, 0xf8, 0xe3, 0xef, 0xdf, 0xc0, 0x60, 0x64,  0x09, 0x91, 0x32, 0x00, 0x00, 0x00, 0x00,
72  0x3e, 0x7c, 0xf9, 0xf3, 0xef, 0xdf,  0x80, 0x60, 0x64, 0xf9, 0x91, 0x32, 0x00, 0x00, 0x00, 0x00,
73  0x3f, 0x01, 0xff,  0xff, 0xe0, 0x1f, 0x80, 0x62, 0x64, 0x89, 0x91, 0x32, 0x00, 0x00, 0x00, 0x00,
74  0x1f, 0xfc, 0xf9, 0xf3, 0xef, 0xff, 0x80, 0x7e, 0x64, 0x99, 0x91, 0x36, 0x00,  0x00, 0x00, 0x00,
75  0x1f, 0xfe, 0xf8, 0xe3, 0xef, 0xff, 0x00, 0x3c, 0x64, 0xf9,  0x91, 0x3e, 0x00, 0x00, 0x00, 0x00,
76  0x0f, 0xfe, 0x71, 0xf1, 0xdf, 0xff, 0x00,  0x00, 0x00, 0x00, 0x00, 0x30, 0x00, 0x00, 0x00, 0x00,
77  0x0f, 0xff, 0x01, 0xfc,  0x3f, 0xfe, 0x00, 0x00, 0x00, 0x00, 0x00, 0x30, 0x00, 0x00, 0x00, 0x00,
78  0x07,  0xff, 0xff, 0xff, 0xff, 0xfc, 0x00, 0x00, 0x00, 0x00, 0x00, 0x20, 0x00, 0x00, 0x00,  0x00,
79  0x03, 0xff, 0xff, 0xff, 0xff, 0xf8, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  0x00, 0x00, 0x00, 0x00,
80  0x01, 0xff, 0xff, 0xff, 0xff, 0xf0, 0x00, 0x00, 0x00,  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
81  0x00, 0xff, 0xff, 0xff, 0xff, 0xe0,  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
82  0x00, 0x7f, 0xff,  0xff, 0xff, 0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
83  0x00, 0x1f, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  0x00, 0x00, 0x00,
84  0x00, 0x07, 0xff, 0xff, 0xfc, 0x00, 0x00, 0x00, 0x00, 0x00,  0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
85  0x00, 0x00, 0xff, 0xff, 0xe0, 0x00, 0x00,  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
86  0x00, 0x00, 0x7f, 0xff,  0xc0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
87  0x00,  0x00, 0x00, 0x40, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  0x00,
88  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  0x00, 0x00, 0x00, 0x00,
89  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
90  0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
91  0x00, 0x00, 0x00,  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
92  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  0x00, 0x00, 0x00,
93  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
94  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
95  0x00, 0x00, 0x00, 0x00,  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
96  0x00,  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  0x00
97
98};
99
100void setup() {
101
102  Serial.begin(9600);
103
104  //Sets  pin 3 to pin 10 as input
105  for (int x = 3; x < 11; x++) {
106
107    pinMode(x,  INPUT);
108
109  }
110
111  oled.begin(SSD1306_SWITCHCAPVCC, 0x3C);
112  oled.clearDisplay();
113
114  //Prints the logo on OLED Display
115  oled.drawBitmap(0, 0, logo, 128, 64, 1);
116  oled.display();
117  delay(3000);
118  oled.clearDisplay();
119
120}
121
122void  loop() {
123
124  //Reads the Binary number from the DIP Switch
125  for (int x  = 3; x < 11; x++) {
126
127    bitVal = digitalRead(x);
128    stringBit = String(bitVal);
129    stringBinary = stringBinary + stringBit;
130    binaryNumber = stringBinary.toInt();
131
132  }
133
134  //Function to convert Binary to Decimal
135  decimalNumber = convertBinaryToDecimal(binaryNumber);
136
137  //Prints the Binary number on the Serial Monitor
138  Serial.print("Binary: ");
139  Serial.print(stringBinary);
140  Serial.print("      ");
141
142  //Prints the  Decimal number on the Serial Monitor
143  Serial.print("Decimal: ");
144  Serial.println(decimalNumber);
145
146  //Prints the Binary number on the Serial Monitor
147  oled.clearDisplay();
148  oled.setTextSize(2);
149  oled.setTextColor(WHITE);
150  oled.setCursor(5, 10);
151  oled.print("B:");
152  oled.println(stringBinary);
153
154  //Prints the Decimal  number on the Serial Monitor
155  oled.setTextSize(2);
156  oled.setTextColor(WHITE);
157  oled.setCursor(5, 40);
158  oled.print("D:");
159  oled.println(decimalNumber);
160  oled.display();
161
162  //Resets all the variables
163  binaryNumber = 0;
164  bitVal = 0;
165  stringBit = "";
166  stringBinary = "";
167
168}
169
170//Function  to convert Binary to Decimal
171long convertBinaryToDecimal(long binary) {
172
173  long number = binary;
174  long decimalVal = 0;
175  long baseVal = 1;
176  long  tempVal = number;
177  long previousDigit;
178
179  while (tempVal) {
180
181    //Converts  Binary to Decimal
182    previousDigit = tempVal % 10;
183    tempVal = tempVal  / 10;
184    decimalVal += previousDigit * baseVal;
185    baseVal = baseVal * 2;
186
187  }
188
189  //Returns the Decimal number
190  return decimalVal;
191
192}

/*

  This sketch converts an 8-Bit Binary number into a Decimal  number.
  The Binary number is fed to the Arduino through an 8x DIP Switch.
  A function then converts this Binary number to its Decimal
  equivalent. These  numbers are displayed on an OLED Display and Serial   Monitor.

  This program  is made by Shreyas for Electronics Champ YouTube Channel.
  Please subscribe  to this channel. Thank You.

*/

//Include the libraries
#include  <Wire.h>
#include <Adafruit_GFX.h>
#include <Adafruit_SSD1306.h>

//Initialize  the variables
int bitVal;
String stringBit;
String stringBinary;
long  binaryNumber;
int decimalNumber;

#define SCREEN_WIDTH 128
#define SCREEN_HEIGHT  64

Adafruit_SSD1306 oled(SCREEN_WIDTH, SCREEN_HEIGHT);

//Prints the  EChamp logo on OLED Display
static const uint8_t PROGMEM logo[] = {

  0x00,  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  0x00,
  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  0x00, 0x00, 0x00, 0x00,
  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
  0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
  0x00, 0x00, 0x00,  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  0x00, 0x00, 0x00,
  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
  0x00, 0x00, 0x07, 0xe8, 0x00, 0x00, 0x00,  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
  0x00, 0x00, 0xff, 0xff,  0xe0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
  0x00,  0x01, 0xff, 0xff, 0xf0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  0x00,
  0x00, 0x07, 0xff, 0xff, 0xfc, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  0x00, 0x00, 0x00, 0x00,
  0x00, 0x1f, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00,  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
  0x00, 0x7f, 0xff, 0xff, 0xff, 0xc0,  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
  0x00, 0xff, 0xff,  0xff, 0xff, 0xe0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
  0x01, 0xff, 0xff, 0xff, 0xff, 0xf0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  0x00, 0x00, 0x00,
  0x03, 0xff, 0xff, 0xff, 0xff, 0xf8, 0x00, 0x00, 0x00, 0x00,  0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
  0x07, 0xfc, 0x11, 0xf1, 0x0f, 0xfc, 0x00,  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x30, 0x00, 0x00,
  0x0f, 0xfc, 0xf1, 0xf1,  0xe7, 0xfe, 0x00, 0x7e, 0x60, 0x00, 0x30, 0x00, 0x00, 0x30, 0x00, 0x00,
  0x1f,  0xfd, 0xfb, 0xf3, 0xe7, 0xff, 0x00, 0x60, 0x60, 0x00, 0x30, 0x00, 0x00, 0x00, 0x00,  0x00,
  0x1f, 0xfd, 0xff, 0xff, 0xe7, 0xff, 0x00, 0x60, 0x63, 0x87, 0xbb, 0xc7,  0x1f, 0x33, 0xcf, 0x00,
  0x3f, 0xfd, 0xff, 0xff, 0xe7, 0xff, 0x80, 0x60, 0x66,  0xcd, 0xb3, 0x4d, 0x9b, 0x36, 0xdb, 0x00,
  0x3f, 0xfd, 0xf9, 0xf3, 0xe7, 0xff,  0x80, 0x7e, 0x64, 0x48, 0x33, 0x08, 0x99, 0x34, 0x18, 0x00,
  0x7e, 0x40, 0x11,  0xf1, 0x20, 0x1f, 0xc0, 0x60, 0x67, 0xc8, 0x33, 0x08, 0x99, 0x34, 0x1f, 0x00,
  0x7e, 0x7d, 0xf9, 0xf3, 0xe7, 0xdf, 0xc0, 0x60, 0x64, 0x08, 0x33, 0x08, 0x99,  0x34, 0x01, 0x00,
  0x7e, 0x7d, 0xfb, 0xff, 0xe7, 0xdf, 0xc0, 0x60, 0x66, 0xcd,  0xb3, 0x0d, 0x99, 0x36, 0xdb, 0x00,
  0x7e, 0x7d, 0xff, 0xff, 0xe7, 0xdf, 0xc0,  0x7e, 0x63, 0xc7, 0xbb, 0x07, 0x19, 0x33, 0xde, 0x00,
  0x7e, 0x7d, 0xf9, 0xf3,  0xe7, 0xdf, 0xe0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
  0xfe,  0x7c, 0xf1, 0xf1, 0x67, 0xdf, 0xe0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  0x00,
  0xfe, 0x7e, 0x11, 0xf1, 0x0f, 0xdf, 0xe0, 0x00, 0x00, 0x00, 0x00, 0x00,  0x00, 0x00, 0x00, 0x00,
  0xfe, 0x7f, 0xfb, 0xf3, 0xff, 0xdf, 0xe0, 0x00, 0x00,  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
  0xfe, 0x7f, 0xff, 0xff, 0xff, 0xdf,  0xe0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
  0xfe, 0x7f, 0xff,  0xff, 0xff, 0xdf, 0xe0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
  0xfe, 0x7f, 0xff, 0xff, 0xff, 0xdf, 0xe0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  0x00, 0x00, 0x00,
  0xfe, 0x7f, 0xff, 0xff, 0xff, 0xdf, 0xe0, 0x00, 0x00, 0x00,  0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
  0xfe, 0x7f, 0xff, 0xff, 0xff, 0xdf, 0xe0,  0x3c, 0x60, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
  0x7e, 0x7f, 0xff, 0xff,  0x7f, 0xdf, 0xe0, 0x7e, 0x60, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
  0x7e,  0x7f, 0x27, 0xf8, 0x9f, 0xdf, 0xc0, 0x62, 0x7c, 0x71, 0xf7, 0x3e, 0x00, 0x00, 0x00,  0x00,
  0x7e, 0x7e, 0xf1, 0xe1, 0xcf, 0xdf, 0xc0, 0x60, 0x6c, 0x59, 0xbb, 0x36,  0x00, 0x00, 0x00, 0x00,
  0x7e, 0x7e, 0xf8, 0xe3, 0xef, 0xdf, 0xc0, 0x60, 0x64,  0x09, 0x91, 0x32, 0x00, 0x00, 0x00, 0x00,
  0x3e, 0x7c, 0xf9, 0xf3, 0xef, 0xdf,  0x80, 0x60, 0x64, 0xf9, 0x91, 0x32, 0x00, 0x00, 0x00, 0x00,
  0x3f, 0x01, 0xff,  0xff, 0xe0, 0x1f, 0x80, 0x62, 0x64, 0x89, 0x91, 0x32, 0x00, 0x00, 0x00, 0x00,
  0x1f, 0xfc, 0xf9, 0xf3, 0xef, 0xff, 0x80, 0x7e, 0x64, 0x99, 0x91, 0x36, 0x00,  0x00, 0x00, 0x00,
  0x1f, 0xfe, 0xf8, 0xe3, 0xef, 0xff, 0x00, 0x3c, 0x64, 0xf9,  0x91, 0x3e, 0x00, 0x00, 0x00, 0x00,
  0x0f, 0xfe, 0x71, 0xf1, 0xdf, 0xff, 0x00,  0x00, 0x00, 0x00, 0x00, 0x30, 0x00, 0x00, 0x00, 0x00,
  0x0f, 0xff, 0x01, 0xfc,  0x3f, 0xfe, 0x00, 0x00, 0x00, 0x00, 0x00, 0x30, 0x00, 0x00, 0x00, 0x00,
  0x07,  0xff, 0xff, 0xff, 0xff, 0xfc, 0x00, 0x00, 0x00, 0x00, 0x00, 0x20, 0x00, 0x00, 0x00,  0x00,
  0x03, 0xff, 0xff, 0xff, 0xff, 0xf8, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  0x00, 0x00, 0x00, 0x00,
  0x01, 0xff, 0xff, 0xff, 0xff, 0xf0, 0x00, 0x00, 0x00,  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
  0x00, 0xff, 0xff, 0xff, 0xff, 0xe0,  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
  0x00, 0x7f, 0xff,  0xff, 0xff, 0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
  0x00, 0x1f, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  0x00, 0x00, 0x00,
  0x00, 0x07, 0xff, 0xff, 0xfc, 0x00, 0x00, 0x00, 0x00, 0x00,  0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
  0x00, 0x00, 0xff, 0xff, 0xe0, 0x00, 0x00,  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
  0x00, 0x00, 0x7f, 0xff,  0xc0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
  0x00,  0x00, 0x00, 0x40, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  0x00,
  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  0x00, 0x00, 0x00, 0x00,
  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
  0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
  0x00, 0x00, 0x00,  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  0x00, 0x00, 0x00,
  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
  0x00, 0x00, 0x00, 0x00,  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
  0x00,  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  0x00

};

void setup() {

  Serial.begin(9600);

  //Sets  pin 3 to pin 10 as input
  for (int x = 3; x < 11; x++) {

    pinMode(x,  INPUT);

  }

  oled.begin(SSD1306_SWITCHCAPVCC, 0x3C);
  oled.clearDisplay();

  //Prints the logo on OLED Display
  oled.drawBitmap(0, 0, logo, 128, 64, 1);
  oled.display();
  delay(3000);
  oled.clearDisplay();

}

void  loop() {

  //Reads the Binary number from the DIP Switch
  for (int x  = 3; x < 11; x++) {

    bitVal = digitalRead(x);
    stringBit = String(bitVal);
    stringBinary = stringBinary + stringBit;
    binaryNumber = stringBinary.toInt();

  }

  //Function to convert Binary to Decimal
  decimalNumber = convertBinaryToDecimal(binaryNumber);

  //Prints the Binary number on the Serial Monitor
  Serial.print("Binary: ");
  Serial.print(stringBinary);
  Serial.print("      ");

  //Prints the  Decimal number on the Serial Monitor
  Serial.print("Decimal: ");
  Serial.println(decimalNumber);

  //Prints the Binary number on the Serial Monitor
  oled.clearDisplay();
  oled.setTextSize(2);
  oled.setTextColor(WHITE);
  oled.setCursor(5, 10);
  oled.print("B:");
  oled.println(stringBinary);

  //Prints the Decimal  number on the Serial Monitor
  oled.setTextSize(2);
  oled.setTextColor(WHITE);
  oled.setCursor(5, 40);
  oled.print("D:");
  oled.println(decimalNumber);
  oled.display();

  //Resets all the variables
  binaryNumber = 0;
  bitVal = 0;
  stringBit = "";
  stringBinary = "";

}

//Function  to convert Binary to Decimal
long convertBinaryToDecimal(long binary) {

  long number = binary;
  long decimalVal = 0;
  long baseVal = 1;
  long  tempVal = number;
  long previousDigit;

  while (tempVal) {

    //Converts  Binary to Decimal
    previousDigit = tempVal % 10;
    tempVal = tempVal  / 10;
    decimalVal += previousDigit * baseVal;
    baseVal = baseVal * 2;

  }

  //Returns the Decimal number
  return decimalVal;

}

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