DIY Arduino Digital Decoder Kit: Convert Binary Digits to Decimal, Octal, Hexadecimal, and ASCII Characters

Build your own converter and unlock the secrets behind computer languages. Effortlessly translate binary digits into decimal, octal, hexadecimal, and even ASCII characters displayed on a clear LCD screen.

May 23, 2024

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GPL3+

Devices & Components

Arduino Uno Rev3

16x2 LCD display with I²C interface

Solar Panel

5mm Green LED

Resistor 470 ohm

5mm Red LED

7 segment Display (common cathode )

Rainbow wires

Solar panel Charger Module

Switch DPDT

Rechargeable Battery AA

Hardware & Tools

Solder Soldering Wire

Soldering kit

Wire cutter

Digital Multimeter

Software & Tools

Arduino IDE

Project description

Code

Digital Decode Translation Kit

Digital Decoder

1//#include <LiquidCrystal_I2C.h>
2#include <LiquidCrystal_I2C_STEM.h>
3LiquidCrystal_I2C_STEM lcd(0x27, 16, 2);  
4int D0 = 9;
5int D1 = 8;
6int D2 = 7;
7int D3 = 6;
8int D4 = 5;
9int D5 = 4;
10int D6 = 3;
11int D7 = 2;
12int invert(int lsb)
13{
14  if(lsb==0)
15  {
16    return 1;
17  }
18  else 
19  {
20    return 0;
21  }
22}
23
24void setup() {
25
26  // initialize serial communication at 9600 bits per second:
27  Serial.begin(9600);
28  // make the pushbutton's pin an input:
29  pinMode(D0, INPUT);
30  pinMode(D1, INPUT);
31
32  pinMode(D2, INPUT);
33  pinMode(D3, INPUT);
34
35  pinMode(D4, INPUT);
36  pinMode(D5, INPUT);
37
38  pinMode(D6, INPUT);
39  pinMode(D7, INPUT);
40    lcd.init();       // initialize the lcd
41    lcd.backlight();  // Set backlight on
42}
43
44// the loop routine runs over and over again forever:
45void loop() {
46  // read the input pin:
47  int lsb0 = invert(digitalRead(D0));
48  int lsb1 = invert(digitalRead(D1));
49  int lsb2 = invert(digitalRead(D2));
50  int lsb3 = invert(digitalRead(D3));
51  int lsb4 = invert(digitalRead(D4));
52  int lsb5 = invert(digitalRead(D5));
53  int lsb6 = invert(digitalRead(D6));
54  int lsb7 = invert(digitalRead(D7));
55  // print out the state of the button:
56  lcd.setCursor(0, 0);
57  lcd.print("Input Bits::");
58  Serial.println(" ");
59  Serial.print(lsb0);
60  Serial.print(" ");
61  Serial.print(lsb1);
62  Serial.print(" ");
63  Serial.print(lsb2);
64  Serial.print(" ");
65  Serial.print(lsb3);
66  Serial.print(" ");
67  Serial.print(lsb4);
68  Serial.print(" ");
69  Serial.print(lsb5);
70  Serial.print(" ");
71  Serial.print(lsb6);
72  Serial.print(" ");
73  Serial.print(lsb7);
74  
75  lcd.clear();
76  lcd.setCursor(7,0);
77  lcd.print(lsb0);
78  lcd.setCursor(6,0);
79  lcd.print(lsb1);
80  lcd.setCursor(5,0);
81  lcd.print(lsb2);
82  lcd.setCursor(4,0);
83  lcd.print(lsb3);
84  lcd.setCursor(3,0);
85  lcd.print(lsb4);
86  lcd.setCursor(2,0);
87  lcd.print(lsb5);
88  lcd.setCursor(1,0);
89  lcd.print(lsb6);
90  lcd.setCursor(0,0);
91  lcd.print(lsb7);
92  int decimal=0;
93  ////////////////////////////////////////////////////////////////////////////
94  //////////////////////code for Binary to Decimal Conversion////////////////
95  ///////////////////////////////////////////////////////////////////////////
96  if(lsb0==1)
97  {
98    decimal=decimal+1;
99  }
100  if(lsb1==1)
101  {
102    decimal=decimal+2;
103  }
104  if(lsb2==1)
105  {
106    decimal=decimal+4;
107  }
108  if(lsb3==1)
109  {
110    decimal=decimal+8;
111  }
112  if(lsb4==1)
113  {
114    decimal=decimal+16;
115  }
116if(lsb5==1)
117  {
118    decimal=decimal+32;
119  }
120if(lsb6==1)
121  {
122    decimal=decimal+64;
123  }
124  if(lsb7==1)
125  {
126    decimal=decimal+128;
127  }
128  lcd.setCursor(9,0);
129  lcd.print("D");  
130  lcd.print("=");  
131  lcd.setCursor(11,0);
132  lcd.print(decimal);
133
134  char ascii;
135  //ascii=(char)decimal;
136  ascii=toascii(decimal);
137  lcd.setCursor(15,0);
138  lcd.write(decimal);
139  //lcd.print(ascii);
140  //lcd.print(toascii(decimal));
141//  lcd.print(ConvertToASCII(decimal));
142  ////////////////////////////////////////////////////////////////////////////
143  //////////////////////code for Binary to octal Conversion////////////////
144  ///////////////////////////////////////////////////////////////////////////
145  //digitalWrite(pushButton,LOW);
146  int octal=0;
147if(lsb0==1)
148  {
149    octal=octal+1;
150  }
151  if(lsb1==1)
152  {
153    octal=octal+2;
154  }
155  if(lsb2==1)
156  {
157    octal=octal+4;
158  }
159  lcd.setCursor(0,1);
160  lcd.print("Oct");
161  lcd.setCursor(3,1);
162  lcd.print("=");  
163  lcd.setCursor(6,1);
164  lcd.print(octal);
165  octal=0;
166  if(lsb3==1)
167  {
168    octal=octal+1;
169  }
170  if(lsb4==1)
171  {
172    octal=octal+2;
173  }
174  if(lsb5==1)
175  {
176    octal=octal+4;
177  }
178  lcd.setCursor(5,1);
179  lcd.print(octal);
180octal=0;
181  if(lsb6==1)
182  {
183    octal=octal+1;
184  }
185  if(lsb7==1)
186  {
187    octal=octal+2;
188  }
189  lcd.setCursor(4,1);
190  lcd.print(octal);
191
192  ////////////////////////////////////////////////////////////////////////////
193  //////////////////////code for Binary to Hexadecimal Conversion////////////////
194  ///////////////////////////////////////////////////////////////////////////
195  //digitalWrite(pushButton,LOW);
196  int hexdecimal=0;
197if(lsb0==1)
198  {
199    hexdecimal=hexdecimal+1;
200  }
201  if(lsb1==1)
202  {
203    hexdecimal=hexdecimal+2;
204  }
205  if(lsb2==1)
206  {
207    hexdecimal=hexdecimal+4;
208  }
209  if(lsb3==1)
210  {
211    hexdecimal=hexdecimal+8;
212  }
213
214  lcd.setCursor(9,1);
215  lcd.print("Hex");
216  lcd.setCursor(12,1);
217  lcd.print("=");  
218  lcd.setCursor(14,1);
219  if(hexdecimal<10)
220  {
221  lcd.print(hexdecimal);
222  }
223  else 
224  {
225  if(hexdecimal==10)
226  {
227  lcd.print("A");
228  } 
229  if(hexdecimal==11)
230  {
231  lcd.print("B");
232  } 
233if(hexdecimal==12)
234  {
235  lcd.print("C");
236  } 
237if(hexdecimal==13)
238  {
239  lcd.print("D");
240  } 
241if(hexdecimal==14)
242  {
243  lcd.print("E");
244  } 
245if(hexdecimal==15)
246  {
247  lcd.print("F");
248  } 
249
250  }
251  
252  
253  hexdecimal=0;
254  if(lsb4==1)
255  {
256    hexdecimal=hexdecimal+1;
257  }
258  if(lsb5==1)
259  {
260    hexdecimal=hexdecimal+2;
261  }
262  if(lsb6==1)
263  {
264    hexdecimal=hexdecimal+4;
265  }
266  if(lsb7==1)
267  {
268    hexdecimal=hexdecimal+8;
269  }
270  lcd.setCursor(13,1);
271  if(hexdecimal<10)
272  {
273  lcd.print(hexdecimal);
274  }
275  else 
276  {
277  if(hexdecimal==10)
278  {
279  lcd.print("A");
280  } 
281  if(hexdecimal==11)
282  {
283  lcd.print("B");
284  } 
285if(hexdecimal==12)
286  {
287  lcd.print("C");
288  } 
289if(hexdecimal==13)
290  {
291  lcd.print("D");
292  } 
293if(hexdecimal==14)
294  {
295  lcd.print("E");
296  } 
297if(hexdecimal==15)
298  {
299  lcd.print("F");
300  } 
301
302  }
303  
304
305 
306  delay(1000);  // delay in between reads for stability  
307}

//#include <LiquidCrystal_I2C.h>
#include <LiquidCrystal_I2C_STEM.h>
LiquidCrystal_I2C_STEM lcd(0x27, 16, 2);  
int D0 = 9;
int D1 = 8;
int D2 = 7;
int D3 = 6;
int D4 = 5;
int D5 = 4;
int D6 = 3;
int D7 = 2;
int invert(int lsb)
{
  if(lsb==0)
  {
    return 1;
  }
  else 
  {
    return 0;
  }
}

void setup() {

  // initialize serial communication at 9600 bits per second:
  Serial.begin(9600);
  // make the pushbutton's pin an input:
  pinMode(D0, INPUT);
  pinMode(D1, INPUT);

  pinMode(D2, INPUT);
  pinMode(D3, INPUT);

  pinMode(D4, INPUT);
  pinMode(D5, INPUT);

  pinMode(D6, INPUT);
  pinMode(D7, INPUT);
    lcd.init();       // initialize the lcd
    lcd.backlight();  // Set backlight on
}

// the loop routine runs over and over again forever:
void loop() {
  // read the input pin:
  int lsb0 = invert(digitalRead(D0));
  int lsb1 = invert(digitalRead(D1));
  int lsb2 = invert(digitalRead(D2));
  int lsb3 = invert(digitalRead(D3));
  int lsb4 = invert(digitalRead(D4));
  int lsb5 = invert(digitalRead(D5));
  int lsb6 = invert(digitalRead(D6));
  int lsb7 = invert(digitalRead(D7));
  // print out the state of the button:
  lcd.setCursor(0, 0);
  lcd.print("Input Bits::");
  Serial.println(" ");
  Serial.print(lsb0);
  Serial.print(" ");
  Serial.print(lsb1);
  Serial.print(" ");
  Serial.print(lsb2);
  Serial.print(" ");
  Serial.print(lsb3);
  Serial.print(" ");
  Serial.print(lsb4);
  Serial.print(" ");
  Serial.print(lsb5);
  Serial.print(" ");
  Serial.print(lsb6);
  Serial.print(" ");
  Serial.print(lsb7);
  
  lcd.clear();
  lcd.setCursor(7,0);
  lcd.print(lsb0);
  lcd.setCursor(6,0);
  lcd.print(lsb1);
  lcd.setCursor(5,0);
  lcd.print(lsb2);
  lcd.setCursor(4,0);
  lcd.print(lsb3);
  lcd.setCursor(3,0);
  lcd.print(lsb4);
  lcd.setCursor(2,0);
  lcd.print(lsb5);
  lcd.setCursor(1,0);
  lcd.print(lsb6);
  lcd.setCursor(0,0);
  lcd.print(lsb7);
  int decimal=0;
  ////////////////////////////////////////////////////////////////////////////
  //////////////////////code for Binary to Decimal Conversion////////////////
  ///////////////////////////////////////////////////////////////////////////
  if(lsb0==1)
  {
    decimal=decimal+1;
  }
  if(lsb1==1)
  {
    decimal=decimal+2;
  }
  if(lsb2==1)
  {
    decimal=decimal+4;
  }
  if(lsb3==1)
  {
    decimal=decimal+8;
  }
  if(lsb4==1)
  {
    decimal=decimal+16;
  }
if(lsb5==1)
  {
    decimal=decimal+32;
  }
if(lsb6==1)
  {
    decimal=decimal+64;
  }
  if(lsb7==1)
  {
    decimal=decimal+128;
  }
  lcd.setCursor(9,0);
  lcd.print("D");  
  lcd.print("=");  
  lcd.setCursor(11,0);
  lcd.print(decimal);

  char ascii;
  //ascii=(char)decimal;
  ascii=toascii(decimal);
  lcd.setCursor(15,0);
  lcd.write(decimal);
  //lcd.print(ascii);
  //lcd.print(toascii(decimal));
//  lcd.print(ConvertToASCII(decimal));
  ////////////////////////////////////////////////////////////////////////////
  //////////////////////code for Binary to octal Conversion////////////////
  ///////////////////////////////////////////////////////////////////////////
  //digitalWrite(pushButton,LOW);
  int octal=0;
if(lsb0==1)
  {
    octal=octal+1;
  }
  if(lsb1==1)
  {
    octal=octal+2;
  }
  if(lsb2==1)
  {
    octal=octal+4;
  }
  lcd.setCursor(0,1);
  lcd.print("Oct");
  lcd.setCursor(3,1);
  lcd.print("=");  
  lcd.setCursor(6,1);
  lcd.print(octal);
  octal=0;
  if(lsb3==1)
  {
    octal=octal+1;
  }
  if(lsb4==1)
  {
    octal=octal+2;
  }
  if(lsb5==1)
  {
    octal=octal+4;
  }
  lcd.setCursor(5,1);
  lcd.print(octal);
octal=0;
  if(lsb6==1)
  {
    octal=octal+1;
  }
  if(lsb7==1)
  {
    octal=octal+2;
  }
  lcd.setCursor(4,1);
  lcd.print(octal);

  ////////////////////////////////////////////////////////////////////////////
  //////////////////////code for Binary to Hexadecimal Conversion////////////////
  ///////////////////////////////////////////////////////////////////////////
  //digitalWrite(pushButton,LOW);
  int hexdecimal=0;
if(lsb0==1)
  {
    hexdecimal=hexdecimal+1;
  }
  if(lsb1==1)
  {
    hexdecimal=hexdecimal+2;
  }
  if(lsb2==1)
  {
    hexdecimal=hexdecimal+4;
  }
  if(lsb3==1)
  {
    hexdecimal=hexdecimal+8;
  }

  lcd.setCursor(9,1);
  lcd.print("Hex");
  lcd.setCursor(12,1);
  lcd.print("=");  
  lcd.setCursor(14,1);
  if(hexdecimal<10)
  {
  lcd.print(hexdecimal);
  }
  else 
  {
  if(hexdecimal==10)
  {
  lcd.print("A");
  } 
  if(hexdecimal==11)
  {
  lcd.print("B");
  } 
if(hexdecimal==12)
  {
  lcd.print("C");
  } 
if(hexdecimal==13)
  {
  lcd.print("D");
  } 
if(hexdecimal==14)
  {
  lcd.print("E");
  } 
if(hexdecimal==15)
  {
  lcd.print("F");
  } 

  }
  
  
  hexdecimal=0;
  if(lsb4==1)
  {
    hexdecimal=hexdecimal+1;
  }
  if(lsb5==1)
  {
    hexdecimal=hexdecimal+2;
  }
  if(lsb6==1)
  {
    hexdecimal=hexdecimal+4;
  }
  if(lsb7==1)
  {
    hexdecimal=hexdecimal+8;
  }
  lcd.setCursor(13,1);
  if(hexdecimal<10)
  {
  lcd.print(hexdecimal);
  }
  else 
  {
  if(hexdecimal==10)
  {
  lcd.print("A");
  } 
  if(hexdecimal==11)
  {
  lcd.print("B");
  } 
if(hexdecimal==12)
  {
  lcd.print("C");
  } 
if(hexdecimal==13)
  {
  lcd.print("D");
  } 
if(hexdecimal==14)
  {
  lcd.print("E");
  } 
if(hexdecimal==15)
  {
  lcd.print("F");
  } 

  }
  

 
  delay(1000);  // delay in between reads for stability  
}

Downloadable files

Circuit Diagram of Digital Decoder Translation Kit

Circuit Diagram

Digital_Binary_Decoder.pdf

Front Page of Digital Decoder Trainer Board

Front Page of Digital Board

Final_DIY Trainter Kit Binary to Decimal converter.jpg

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