// urut dari 0 - 9
/* untuk 7segment common katoda,
   jika menggunakan common Anoda,
   diganti "1" dengan "0" */

void setup() {
  pinMode(2, OUTPUT);
  pinMode(3, OUTPUT);
  pinMode(4, OUTPUT);
  pinMode(5, OUTPUT);
  pinMode(6, OUTPUT);
  pinMode(7, OUTPUT);
  pinMode(8, OUTPUT);
  pinMode(9, OUTPUT);
  digitalWrite(9,0); // start with the "dot" off
}

void loop() {
  // write '0'
  digitalWrite(2, 0); //a
  digitalWrite(3, 0); //b
  digitalWrite(4, 0); //c
  digitalWrite(5, 0); //d
  digitalWrite(6, 0); //e
  digitalWrite(7, 0); //f
  digitalWrite(8, 1); //g
  delay(500);

  // write '1'
  digitalWrite(2, 1); //a
  digitalWrite(3, 0); //b
  digitalWrite(4, 0); //c
  digitalWrite(5, 1); //d
  digitalWrite(6, 1); //e
  digitalWrite(7, 1); //f
  digitalWrite(8, 1); //g
  delay(500);

  // write '2'
  digitalWrite(2, 0); //a
  digitalWrite(3, 0); //b
  digitalWrite(4, 1); //c
  digitalWrite(5, 0); //d
  digitalWrite(6, 0); //e
  digitalWrite(7, 1); //f
  digitalWrite(8, 0); //g
  delay(500);

  // write '3'
  digitalWrite(2, 0); //a
  digitalWrite(3, 0); //b
  digitalWrite(4, 0); //c
  digitalWrite(5, 0); //d
  digitalWrite(6, 1); //e
  digitalWrite(7, 1); //f
  digitalWrite(8, 0); //g
  delay(500);

    // write '4'
  digitalWrite(2, 1); //a
  digitalWrite(3, 0); //b
  digitalWrite(4, 0); //c
  digitalWrite(5, 1); //d
  digitalWrite(6, 1); //e
  digitalWrite(7, 0); //f
  digitalWrite(8, 0); //g
  delay(500);

    // write '5'
  digitalWrite(2, 0); //a
  digitalWrite(3, 1); //b
  digitalWrite(4, 0); //c
  digitalWrite(5, 0); //d
  digitalWrite(6, 1); //e
  digitalWrite(7, 0); //f
  digitalWrite(8, 0); //g
  delay(500);

    // write '6'
  digitalWrite(2, 0); //a
  digitalWrite(3, 1); //b
  digitalWrite(4, 0); //c
  digitalWrite(5, 0); //d
  digitalWrite(6, 0); //e
  digitalWrite(7, 0); //f
  digitalWrite(8, 0); //g
  delay(500);


  // write '7'
  digitalWrite(2, 0); //a
  digitalWrite(3, 0); //b
  digitalWrite(4, 0); //c
  digitalWrite(5, 1); //d
  digitalWrite(6, 1); //e
  digitalWrite(7, 1); //f
  digitalWrite(8, 1); //g
  delay(500);

    // write '8'
  digitalWrite(2, 0); //a
  digitalWrite(3, 0); //b
  digitalWrite(4, 0); //c
  digitalWrite(5, 0); //d
  digitalWrite(6, 0); //e
  digitalWrite(7, 0); //f
  digitalWrite(8, 0); //g
  delay(500);

    // write '9'
  digitalWrite(2, 0); //a
  digitalWrite(3, 0); //b
  digitalWrite(4, 0); //c
  digitalWrite(5, 0); //d
  digitalWrite(6, 1); //e
  digitalWrite(7, 0); //f
  digitalWrite(8, 0); //g
  delay(500);
  }