7 Segment One Digit Display Counting Up Number

7 Segment One Digit Display

1. Objective

The objective of this project is talk about, how to use 7 segment 1 digits and display it around 0 to 9.

2. Requirement

• Arduino
• USB Cable
• 7 Segment 1 Digit (Cathode Type)
• Resistor 220 or 330 Ohm
• Electronic Wire

3. Building

The first build circuit like below on Figure 1.

Figure 1: 7 Segment 1 Digit Connection

4. Coding

 

  // 22 October 2017

 
int PIN_A = 1;
int PIN_B = 2;
int PIN_C = 3;
int PIN_D = 4;
int PIN_E = 5;
int PIN_F = 6;
int PIN_G = 7;
int i = 0;
int j = 0;

int Arduino_Pins[7] = {PIN_A, PIN_B, PIN_C, PIN_D, PIN_E, PIN_F, PIN_G};   // an array of pin numbers to which LEDs
int Segment_Pins[10][7] = {{0,1,1,1,1,1,1}, // 0
                           {0,0,0,0,1,1,0}, // 1
                           {1,0,1,1,0,1,1}, // 2
                           {1,0,0,1,1,1,1}, // 3
                           {1,1,0,0,1,1,0}, // 4
                           {1,1,0,1,1,0,1}, // 5
                           {1,1,1,1,1,0,1}, // 6
                           {0,0,0,0,1,1,1}, // 7
                           {1,1,1,1,1,1,1}, // 8
                           {1,1,0,1,1,1,1}, // 9
                           }; 

void setup()  {
  // Configure Digital I/O
  pinMode(PIN_A, OUTPUT);
  pinMode(PIN_B, OUTPUT);
  pinMode(PIN_C, OUTPUT);
  pinMode(PIN_D, OUTPUT);
  pinMode(PIN_E, OUTPUT);
  pinMode(PIN_F, OUTPUT);
  pinMode(PIN_G, OUTPUT);
}

void loop() {

  for(i=0;i<10;i++) 
  {
    for(j=0;j<7;j++)  
    {
      digitalWrite(Arduino_Pins[j],Segment_Pins[i][j]);
    }
    delay(500);

    if(i==9)
    {           
      i = 0;      
    }
  }
}       
 

5. Result

Now we get a result, 7 Segment can display number from 0 to 9 with counting up.

Royal University of Phnom Penh
Faculty of Engineering
Dep. Telecommunication and Electronic Engineering

Group Member:
1. Tann Thona
2. Thach Soveasna
3. Chhoy Noreath
4. Neth Channa
5. Mok Vira

Instructor: Prof. Chann Tola
Date: 22 October 2017