Four Seven Segment Display

Update of this article Here

The way these 4 seven segments work is like the usual seven segments, but we need to determine which one will light up. Then then only one can be chosen? Yes it is true, but if it is placed inside looping, it will happen 60 iteration every second and the human eye will see it as all flame. So this is not a problem

Put A in no 2 dst, G at no 8. D1 at no 9 dst D4 at no 12

Arduino Code

#define A 2

#define B 3

#define C 4

#define D 5

#define E 6

const int F=7;

#define G 8

#define D1 9

#define D2 10

#define D3 11

#define D4 12

void setup() {

  // put your setup code here, to run once:

 pinMode(A, OUTPUT);

  pinMode(B, OUTPUT);

  pinMode(C, OUTPUT);

  pinMode(D, OUTPUT);

  pinMode(E, OUTPUT);

 pinMode(F, OUTPUT);

  pinMode(G, OUTPUT);

  pinMode(D1, OUTPUT);

  pinMode(D2, OUTPUT);

  pinMode(D3, OUTPUT);

  pinMode(D4, OUTPUT);

  Serial.begin(9600);

}



void char_A()

{

  digitalWrite(D, HIGH);

  digitalWrite(E, LOW);

  digitalWrite(F, LOW);

  digitalWrite(G, LOW);

  digitalWrite(A, LOW);

  digitalWrite(B, LOW);

  digitalWrite(C, LOW);

}



void char_B()

{

  //Displays B

  digitalWrite(D, LOW);

  digitalWrite(E, LOW);

  digitalWrite(F, LOW);

  digitalWrite(G, LOW);

  digitalWrite(A, HIGH);

  digitalWrite(B, HIGH);

  digitalWrite(C, LOW);

}



void char_C()

{

  //Displays C

  digitalWrite(D, LOW);

  digitalWrite(E, LOW);

  digitalWrite(F, LOW);

  digitalWrite(G, HIGH);

  digitalWrite(A, LOW);

  digitalWrite(B, HIGH);

  digitalWrite(C, HIGH);

}



void char_D()

{

  //Displays D

  digitalWrite(D, LOW);

  digitalWrite(E, LOW);

  digitalWrite(F, HIGH);

  digitalWrite(G, LOW);

  digitalWrite(A, HIGH);

  digitalWrite(B, LOW);

  digitalWrite(C, LOW);

}



void char_E()

{

  //Displays E

  digitalWrite(D, LOW);

  digitalWrite(E, LOW);

  digitalWrite(F, LOW);

  digitalWrite(G, LOW);

  digitalWrite(A, LOW);

  digitalWrite(B, HIGH);

  digitalWrite(C, HIGH);

}



void char_F()

{

  //Displays F

  digitalWrite(D, HIGH);

  digitalWrite(E, LOW);

  digitalWrite(F, LOW);

  digitalWrite(G, LOW);

  digitalWrite(A, LOW);

  digitalWrite(B, HIGH);

  digitalWrite(C, HIGH);

}





void one()

{

  //Displays 1

  digitalWrite(D, HIGH);

  digitalWrite(E, LOW);

  digitalWrite(F, LOW);

  digitalWrite(G, HIGH);

  digitalWrite(A, HIGH);

  digitalWrite(B, HIGH);

  digitalWrite(C, HIGH);

}



void two()

{

  //Displays 2

  digitalWrite(D, LOW);

  digitalWrite(E, LOW);

  digitalWrite(F, HIGH);

  digitalWrite(G, LOW);

  digitalWrite(A, LOW);

  digitalWrite(B, LOW);

  digitalWrite(C, HIGH);

}



void three()

{

  //Displays 3

  digitalWrite(D, LOW);

  digitalWrite(E, HIGH);

  digitalWrite(F, HIGH);

  digitalWrite(G, LOW);

  digitalWrite(A, LOW);

  digitalWrite(B, LOW);

  digitalWrite(C, LOW);

}



void four()

{

  //Displays 4

  digitalWrite(D, HIGH);

  digitalWrite(E, HIGH);

  digitalWrite(F, LOW);

  digitalWrite(G, LOW);

  digitalWrite(A, HIGH);

  digitalWrite(B, LOW);

  digitalWrite(C, LOW);

}



void five()

{

  //Displays 5

  digitalWrite(D, LOW);

  digitalWrite(E, HIGH);

  digitalWrite(F, LOW);

  digitalWrite(G, LOW);

  digitalWrite(A, LOW);

  digitalWrite(B, HIGH);

  digitalWrite(C, LOW);

}



void six()

{

  //Displays 6

  digitalWrite(D, LOW);

  digitalWrite(E, LOW);

  digitalWrite(F, LOW);

  digitalWrite(G, LOW);

  digitalWrite(A, LOW);

  digitalWrite(B, HIGH);

  digitalWrite(C, LOW);

}



void seven()

{

  //Displays 7

  digitalWrite(D, HIGH);

  digitalWrite(E, HIGH);

  digitalWrite(F, HIGH);

  digitalWrite(G, HIGH);

  digitalWrite(A, LOW);

  digitalWrite(B, LOW);

  digitalWrite(C, LOW);

}



void eight()

{

  //Displays 8

  digitalWrite(D, LOW);

  digitalWrite(E, LOW);

  digitalWrite(F, LOW);

  digitalWrite(G, LOW);

  digitalWrite(A, LOW);

  digitalWrite(B, LOW);

  digitalWrite(C, LOW);

}



void nine()

{

  //Displays 9

  digitalWrite(D, LOW);

  digitalWrite(E, HIGH);

  digitalWrite(F, LOW);

  digitalWrite(G, LOW);

  digitalWrite(A, LOW);

  digitalWrite(B, LOW);

  digitalWrite(C, LOW);

}



void zero()

{

  //Displays 0

  digitalWrite(D, LOW);

  digitalWrite(E, LOW);

  digitalWrite(F, LOW);

  digitalWrite(G, HIGH);

  digitalWrite(A, LOW);

  digitalWrite(B, LOW);

  digitalWrite(C, LOW);

}



void LoopDisplay(int urutan)

{

  //Loop through all Chars and Numbers

  digitalWrite(urutan,HIGH);

  char_A();

  delay(1000);

  char_B();

  delay(1000);

  char_C();

  delay(1000);

  char_D();

  delay(1000);

  char_E();

  delay(1000);

  char_F();

  delay(1000);

  one();

  delay(1000);

  two();

  delay(1000);

  three();

  delay(1000);

  four();

  delay(1000);

  five();

  delay(1000);

  six();

  delay(1000);

  seven();

  delay(1000);

  eight();

  delay(1000);

  nine();

  delay(1000);

  zero();

  delay(1000);

  digitalWrite(urutan,LOW);

}

void  jam()

{

  unsigned long waktu = millis();



  waktu/=1000;

  digitalWrite(D4,HIGH);

  angkatoled(waktu%10);

  waktu/=10;



  digitalWrite(D4,LOW);

  digitalWrite(D3,HIGH);

  angkatoled(waktu%10);

  waktu/=10;



  digitalWrite(D3,LOW);

  digitalWrite(D2,HIGH);

  angkatoled(waktu%10);

  waktu/=10;



  digitalWrite(D2,LOW);

  digitalWrite(D1,HIGH);

  angkatoled(waktu%10);

  waktu/=10;



  digitalWrite(D1,LOW);

  

}

void angkatoled(int angka)

{

  switch(angka)

  {

    case 0:

    zero();

    break;



    case 1:

    one();

    break;



    case 2:

    two();

    break;



    case 3:

    three();

    break;



    case 4:

    four();

    break;



    case 5:

    five();

    break;



    case 6:

    six();

    break;



    case 7:

    seven();

    break;



    case 8:

    eight();

    break;



    case 9:

    nine();

    break;

  }

}

void loop() {

  // put your main code here, to run repeatedly:

 /* LoopDisplay(D1);

  LoopDisplay(D2);

  LoopDisplay(D3);

  LoopDisplay(D4);*/

  jam();



}