Published January 26, 2022 © GPL3+

DIY 7 Segment Display From 7 LED's

Making 7 Segment display from 7 LED's & controlling them with atmeg328p & displaying numbers

BeginnerFull instructions provided683

Things used in this project

Hardware components

Arduino UNO

5 mm LED: Red

5 mm LED: Green

USB-A to Mini-USB Cable

Breadboard (generic)

9V 1A Switching Wall Power Supply

Story

What is your project about?

This project is about making a 7 segment display at home from the readily available supplies.

How does it work?

We are going to make seven segment display from seven LEDs. To display numbers from zero to nine.

Let's see the items required.

Seven LED's to make Seven segment display. PCB/ Cardboard to fix LEDs. A breadboard for connections. Some Wires for interconnections. Power Source. A Microcontroller for controlling.

Let's start by doing wiring on the breadboard.

Now we will insert LED into its specified slot. We will use the cardboard templet to mount the LED properly. We will connect them first from the center then to the outward.

1 / 2

We are done with the connections. Now we will check whether all LEDs are properly connected. Before connecting them to Microcontroller. Now we will check which pin is for which LED. Let's connect the microcontroller to the computer. And upload the code. Let's test the code & connection. Yes, it is working. Now we will tweak the code to display numbers. We will cover LED with a cardboard template cut in the shape of a seven-segment.

Now we can see, we have made a seven-segment display with seven LEDs. And it is working fine.

Robotics EveryDay!!!

Code

Code for DIY & segment display

void setup() {
  pinMode(0,OUTPUT);
  pinMode(1,OUTPUT);
  pinMode(2,OUTPUT);
  pinMode(3,OUTPUT);
  pinMode(4,OUTPUT);
  pinMode(5,OUTPUT);
  pinMode(6,OUTPUT);

  digitalWrite(0,HIGH);
  digitalWrite(1,HIGH);
  digitalWrite(2,HIGH);
  digitalWrite(3,HIGH);
  digitalWrite(4,HIGH);
  digitalWrite(5,HIGH);
  digitalWrite(6,HIGH);

  blink(0);
  blink(1);
  blink(2);
  blink(3);
  blink(4);
  blink(5);
  blink(6);
  blink(0);
  blink(1);
  blink(2);
  blink(3);
  blink(4);
  blink(5);
  blink(6);
  
}

void blink(int x){
  digitalWrite(x,LOW);
  delay(200);
  digitalWrite(x,HIGH);
  delay(200);
  
  }

void zero(){
  digitalWrite(0,LOW);
  digitalWrite(1,LOW);
  digitalWrite(2,LOW);
  digitalWrite(3,LOW);
  digitalWrite(4,LOW);
  digitalWrite(5,LOW);
  digitalWrite(6,HIGH);
}

void one(){
  digitalWrite(0,HIGH);
  digitalWrite(1,LOW);
  digitalWrite(2,LOW);
  digitalWrite(3,HIGH);
  digitalWrite(4,HIGH);
  digitalWrite(5,HIGH);
  digitalWrite(6,HIGH);
}

void two(){
  digitalWrite(0,LOW);
  digitalWrite(1,LOW);
  digitalWrite(2,HIGH);
  digitalWrite(3,LOW);
  digitalWrite(4,LOW);
  digitalWrite(5,HIGH);
  digitalWrite(6,LOW);
}


void three(){
  digitalWrite(0,LOW);
  digitalWrite(1,LOW);
  digitalWrite(2,LOW);
  digitalWrite(3,LOW);
  digitalWrite(4,HIGH);
  digitalWrite(5,HIGH);
  digitalWrite(6,LOW);
}

void four(){
  digitalWrite(0,HIGH);
  digitalWrite(1,LOW);
  digitalWrite(2,LOW);
  digitalWrite(3,HIGH);
  digitalWrite(4,HIGH);
  digitalWrite(5,LOW);
  digitalWrite(6,LOW);
}

void five(){
  digitalWrite(0,LOW);
  digitalWrite(1,HIGH);
  digitalWrite(2,LOW);
  digitalWrite(3,LOW);
  digitalWrite(4,HIGH);
  digitalWrite(5,LOW);
  digitalWrite(6,LOW);
}


void six(){
  digitalWrite(0,LOW);
  digitalWrite(1,HIGH);
  digitalWrite(2,LOW);
  digitalWrite(3,LOW);
  digitalWrite(4,LOW);
  digitalWrite(5,LOW);
  digitalWrite(6,LOW);
}


void seven(){
  digitalWrite(0,LOW);
  digitalWrite(1,LOW);
  digitalWrite(2,LOW);
  digitalWrite(3,HIGH);
  digitalWrite(4,HIGH);
  digitalWrite(5,HIGH);
  digitalWrite(6,HIGH);
}

void eight(){
  digitalWrite(0,LOW);
  digitalWrite(1,LOW);
  digitalWrite(2,LOW);
  digitalWrite(3,LOW);
  digitalWrite(4,LOW);
  digitalWrite(5,LOW);
  digitalWrite(6,LOW);
}

void nine(){
  digitalWrite(0,LOW);
  digitalWrite(1,LOW);
  digitalWrite(2,LOW);
  digitalWrite(3,LOW);
  digitalWrite(4,HIGH);
  digitalWrite(5,LOW);
  digitalWrite(6,LOW);
}

void loop() {
  int d=1000;
  
  zero();
  delay(d);
  
  one();
  delay(d);

  two();
  delay(d);

  three();
  delay(d);

  four();
  delay(d);

  five();
  delay(d);

  six();
  delay(d);

  seven();
  delay(d);

  eight();
  delay(d);

  nine();
  delay(d);
}

Credits

Robotics EveryDay

0 projects • 9 followers

DIY 7 Segment Display From 7 LED's

Things used in this project

Hardware components

Story

What is your project about?

How does it work?

Schematics

Interfacing

Code

Code for DIY & segment display

Credits

Robotics EveryDay

Comments

Embed the widget on your own site

DIY 7 Segment Display From 7 LED's

DIY 7 Segment Display From 7 LED's

Things used in this project

Hardware components

Story

What is your project about?

How does it work?

Schematics

Interfacing

Code

Code for DIY & segment display

Credits

Robotics EveryDay

Comments

Related channels and tags