Types of 7 Segment Display

Published June 29, 2022 © GPL3+

How to connect 7 segment display

Connections of 7 segment using Arduino

IntermediateFull instructions provided3,472

Things used in this project

Hardware components

Arduino UNO

Arduino Nano R3

7 Segment LED Display, InfoVue

Jumper wires (generic)

Breadboard (generic)

Software apps and online services

Arduino IDE

Story

Types of 7 Segment Display

There are two types of LED 7-segment display called: Common Cathode (CC) and Common Anode (CA).

1.Common Cathode In common cathode seven segment displays, all the cathode connections of LED segments are connected together to logic 0 or ground. We use logic 1 through a current limiting resistor to forward bias the individual anode terminals a to g.

2.Common Anode

Whereas all the anode connections of the LED segments are connected together to logic 1 in a common anode seven segment display. We use logic 0 through a current limiting resistor to the cathode of a particular segment a to g.

Steps to make this project:

1. Gather components like Arduino Uno/ Nano, 7 segment display ( Common Anode / Common Cathode ), Breadboard, Jumper wires.

2. For Common Cathode connections:

See the connection diagram of Common Cathode

3. For Common Anode connections:

See the connection diagram of Common Anode

4. Upload respective codes.

You learned How to do connections of 7 segment display.

Visit my website from below link for more projects:

https://electronicsisfun08.blogspot.com/

Code

// working of 7 segment CC display //

int a= 2;
int b= 3;
int c= 4;
int d= 5;
int e= 6;
int f= 7;
int g= 8;

int t = 2000;

void setup(){
 
 pinMode(a, OUTPUT);
 pinMode(b, OUTPUT);
 pinMode(c, OUTPUT);
 pinMode(d, OUTPUT);
 pinMode(e, OUTPUT);
 pinMode(f, OUTPUT);
 pinMode(g, OUTPUT);
}

void loop() {
////////////////////   0 to 9    /////////////////////

 //0
  digitalWrite(a,1);
 digitalWrite(b,1);
 digitalWrite(c,1);
 digitalWrite(d,1);
 digitalWrite(e,1);
 digitalWrite(f,1);
 digitalWrite(g,0);
 
 delay(t);

  //1
  digitalWrite(a,0);
 digitalWrite(b,1);
 digitalWrite(c,1);
 digitalWrite(d,0);
 digitalWrite(e,0);
 digitalWrite(f,0);
 digitalWrite(g,0);
 
 delay(t);

  //2
 digitalWrite(a,1);
 digitalWrite(b,1);
 digitalWrite(c,0);
 digitalWrite(d,1);
 digitalWrite(e,1);
 digitalWrite(f,0);
 digitalWrite(g,1);
 
 delay(t);

  //3
 digitalWrite(a,1);
 digitalWrite(b,1);
 digitalWrite(c,1);
 digitalWrite(d,1);
 digitalWrite(e,0);
 digitalWrite(f,0);
 digitalWrite(g,1);
 
 delay(t);

  //4
  digitalWrite(a,0);
 digitalWrite(b,1);
 digitalWrite(c,1);
 digitalWrite(d,0);
 digitalWrite(e,0);
 digitalWrite(f,1);
 digitalWrite(g,1);
 
 delay(t);

  //5
  digitalWrite(a,1);
 digitalWrite(b,0);
 digitalWrite(c,1);
 digitalWrite(d,1);
 digitalWrite(e,0);
 digitalWrite(f,1);
 digitalWrite(g,1);
 
 delay(t);

  //6
  digitalWrite(a,1);
 digitalWrite(b,0);
 digitalWrite(c,1);
 digitalWrite(d,1);
 digitalWrite(e,1);
 digitalWrite(f,1);
 digitalWrite(g,1);
 
 delay(t);

  //7
 digitalWrite(a,1);
 digitalWrite(b,1);
 digitalWrite(c,1);
 digitalWrite(d,0);
 digitalWrite(e,0);
 digitalWrite(f,0);
 digitalWrite(g,0);
 
 delay(t);

  //8
 digitalWrite(a,1);
 digitalWrite(b,1);
 digitalWrite(c,1);
 digitalWrite(d,1);
 digitalWrite(e,1);
 digitalWrite(f,1);
 digitalWrite(g,1);
 
 delay(t);

  //9 
 digitalWrite(a,1);
 digitalWrite(b,1);
 digitalWrite(c,1);
 digitalWrite(d,1);
 digitalWrite(e,0);
 digitalWrite(f,1);
 digitalWrite(g,1);
 
 delay(t);

//////////////////////////////////////////////////////

digitalWrite(a,1);
digitalWrite(d,1);
digitalWrite(g,1);
delay(500);

digitalWrite(a,0);
digitalWrite(d,0);
digitalWrite(g,0);
delay(500);

digitalWrite(a,1);
digitalWrite(d,1);
digitalWrite(g,1);
delay(500);

digitalWrite(a,0);
digitalWrite(d,0);
digitalWrite(g,0);
delay(500);


////////////////////   9 to 0    /////////////////////
 //9 
 digitalWrite(a,1);
 digitalWrite(b,1);
 digitalWrite(c,1);
 digitalWrite(d,1);
 digitalWrite(e,0);
 digitalWrite(f,1);
 digitalWrite(g,1);
 
 delay(t);


 //8
 digitalWrite(a,1);
 digitalWrite(b,1);
 digitalWrite(c,1);
 digitalWrite(d,1);
 digitalWrite(e,1);
 digitalWrite(f,1);
 digitalWrite(g,1);
 
 delay(t);

 

 //7
 digitalWrite(a,1);
 digitalWrite(b,1);
 digitalWrite(c,1);
 digitalWrite(d,0);
 digitalWrite(e,0);
 digitalWrite(f,0);
 digitalWrite(g,0);
 
 delay(t);

 

 //6
  digitalWrite(a,1);
 digitalWrite(b,0);
 digitalWrite(c,1);
 digitalWrite(d,1);
 digitalWrite(e,1);
 digitalWrite(f,1);
 digitalWrite(g,1);
 
 delay(t);


 //5
  digitalWrite(a,1);
 digitalWrite(b,0);
 digitalWrite(c,1);
 digitalWrite(d,1);
 digitalWrite(e,0);
 digitalWrite(f,1);
 digitalWrite(g,1);
 
 delay(t);


 //4 
  digitalWrite(a,0);
 digitalWrite(b,1);
 digitalWrite(c,1);
 digitalWrite(d,0);
 digitalWrite(e,0);
 digitalWrite(f,1);
 digitalWrite(g,1);
 
 delay(t);


 //3
  digitalWrite(a,1);
 digitalWrite(b,1);
 digitalWrite(c,1);
 digitalWrite(d,1);
 digitalWrite(e,0);
 digitalWrite(f,0);
 digitalWrite(g,1);
 
 delay(t);


 //2
  digitalWrite(a,1);
 digitalWrite(b,1);
 digitalWrite(c,0);
 digitalWrite(d,1);
 digitalWrite(e,1);
 digitalWrite(f,0);
 digitalWrite(g,1);
 
 delay(t);

 //1
  digitalWrite(a,0);
 digitalWrite(b,1);
 digitalWrite(c,1);
 digitalWrite(d,0);
 digitalWrite(e,0);
 digitalWrite(f,0);
 digitalWrite(g,0);
 
 delay(t);
 
 //0
  digitalWrite(a,1);
 digitalWrite(b,1);
 digitalWrite(c,1);
 digitalWrite(d,1);
 digitalWrite(e,1);
 digitalWrite(f,1);
 digitalWrite(g,0);
 
 delay(t);
}

// working of 7 segment CA display //

int a= 2;
int b= 3;
int c= 4;
int d= 5;
int e= 6;
int f= 7;
int g= 8;

int t = 2000;

void setup(){
 
 pinMode(a, OUTPUT);
 pinMode(b, OUTPUT);
 pinMode(c, OUTPUT);
 pinMode(d, OUTPUT);
 pinMode(e, OUTPUT);
 pinMode(f, OUTPUT);
 pinMode(g, OUTPUT);
}

void loop() {
////////////////////   0 to 9    /////////////////////

 //0
  digitalWrite(a,0);
 digitalWrite(b,0);
 digitalWrite(c,0);
 digitalWrite(d,0);
 digitalWrite(e,0);
 digitalWrite(f,0);
 digitalWrite(g,1);
 
 delay(t);

  //1
  digitalWrite(a,1);
 digitalWrite(b,0);
 digitalWrite(c,0);
 digitalWrite(d,1);
 digitalWrite(e,1);
 digitalWrite(f,1);
 digitalWrite(g,1);
 
 delay(t);

  //2
 digitalWrite(a,0);
 digitalWrite(b,0);
 digitalWrite(c,1);
 digitalWrite(d,0);
 digitalWrite(e,0);
 digitalWrite(f,1);
 digitalWrite(g,0);
 
 delay(t);

  //3
 digitalWrite(a,0);
 digitalWrite(b,0);
 digitalWrite(c,0);
 digitalWrite(d,0);
 digitalWrite(e,1);
 digitalWrite(f,1);
 digitalWrite(g,0);
 
 delay(t);

  //4
  digitalWrite(a,1);
 digitalWrite(b,0);
 digitalWrite(c,0);
 digitalWrite(d,1);
 digitalWrite(e,1);
 digitalWrite(f,0);
 digitalWrite(g,0);
 
 delay(t);

  //5
  digitalWrite(a,0);
 digitalWrite(b,1);
 digitalWrite(c,0);
 digitalWrite(d,0);
 digitalWrite(e,1);
 digitalWrite(f,0);
 digitalWrite(g,0);
 
 delay(t);

  //6
  digitalWrite(a,0);
 digitalWrite(b,1);
 digitalWrite(c,0);
 digitalWrite(d,0);
 digitalWrite(e,0);
 digitalWrite(f,0);
 digitalWrite(g,0);
 
 delay(t);

  //7
 digitalWrite(a,0);
 digitalWrite(b,0);
 digitalWrite(c,0);
 digitalWrite(d,1);
 digitalWrite(e,1);
 digitalWrite(f,1);
 digitalWrite(g,1);
 
 delay(t);

  //8
 digitalWrite(a,0);
 digitalWrite(b,0);
 digitalWrite(c,0);
 digitalWrite(d,0);
 digitalWrite(e,0);
 digitalWrite(f,0);
 digitalWrite(g,0);
 
 delay(t);

  //9 
 digitalWrite(a,0);
 digitalWrite(b,0);
 digitalWrite(c,0);
 digitalWrite(d,0);
 digitalWrite(e,1);
 digitalWrite(f,0);
 digitalWrite(g,0);
 
 delay(t);

//////////////////////////////////////////////////////

digitalWrite(a,0);
digitalWrite(d,0);
digitalWrite(g,0);
delay(500);

digitalWrite(a,1);
digitalWrite(d,1);
digitalWrite(g,1);
delay(500);

digitalWrite(a,0);
digitalWrite(d,0);
digitalWrite(g,0);
delay(500);

digitalWrite(a,1);
digitalWrite(d,1);
digitalWrite(g,1);
delay(500);


////////////////////   9 to 0    /////////////////////
 //9 
 digitalWrite(a,0);
 digitalWrite(b,0);
 digitalWrite(c,0);
 digitalWrite(d,0);
 digitalWrite(e,1);
 digitalWrite(f,0);
 digitalWrite(g,0);
 
 delay(t);


 //8
 digitalWrite(a,0);
 digitalWrite(b,0);
 digitalWrite(c,0);
 digitalWrite(d,0);
 digitalWrite(e,0);
 digitalWrite(f,0);
 digitalWrite(g,0);
 
 delay(t);

 

 //7
 digitalWrite(a,0);
 digitalWrite(b,0);
 digitalWrite(c,0);
 digitalWrite(d,1);
 digitalWrite(e,1);
 digitalWrite(f,1);
 digitalWrite(g,1);
 
 delay(t);

 

 //6
  digitalWrite(a,0);
 digitalWrite(b,1);
 digitalWrite(c,0);
 digitalWrite(d,0);
 digitalWrite(e,0);
 digitalWrite(f,0);
 digitalWrite(g,0);
 
 delay(t);


 //5
  digitalWrite(a,0);
 digitalWrite(b,1);
 digitalWrite(c,0);
 digitalWrite(d,0);
 digitalWrite(e,1);
 digitalWrite(f,0);
 digitalWrite(g,0);
 
 delay(t);


 //4
  digitalWrite(a,1);
 digitalWrite(b,0);
 digitalWrite(c,0);
 digitalWrite(d,1);
 digitalWrite(e,1);
 digitalWrite(f,0);
 digitalWrite(g,0);
 
 delay(t);


 //3
 digitalWrite(a,0);
 digitalWrite(b,0);
 digitalWrite(c,0);
 digitalWrite(d,0);
 digitalWrite(e,1);
 digitalWrite(f,1);
 digitalWrite(g,0);
 
 delay(t);


 //2
 digitalWrite(a,0);
 digitalWrite(b,0);
 digitalWrite(c,1);
 digitalWrite(d,0);
 digitalWrite(e,0);
 digitalWrite(f,1);
 digitalWrite(g,0);
 
 delay(t);

 //1
  digitalWrite(a,1);
 digitalWrite(b,0);
 digitalWrite(c,0);
 digitalWrite(d,1);
 digitalWrite(e,1);
 digitalWrite(f,1);
 digitalWrite(g,1);
 
 delay(t);
 
 //0
  digitalWrite(a,0);
 digitalWrite(b,0);
 digitalWrite(c,0);
 digitalWrite(d,0);
 digitalWrite(e,0);
 digitalWrite(f,0);
 digitalWrite(g,1);
 
 delay(t);
}

Credits

mohammadsohail0008

42 projects • 31 followers

How to connect 7 segment display

Things used in this project

Hardware components

Software apps and online services

Story

Types of 7 Segment Display

Schematics

Common Cathode

Common Anode

Code

Code for Common Cathode

Code for Common Anode

Credits

mohammadsohail0008

Comments

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How to connect 7 segment display

How to connect 7 segment display

Things used in this project

Hardware components

Software apps and online services

Story

Types of 7 Segment Display

Schematics

Common Cathode

Common Anode

Code

Code for Common Cathode

Code for Common Anode

Credits

mohammadsohail0008

Comments

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