#define a 3 //segment ‘a’ di pin digital 2 
#define b 4
#define c 5
#define d 6
#define e 7
#define f 8
#define g 9

int conValue;

void setup() {
  Serial.begin(9600);
  pinMode (a, OUTPUT);
  pinMode (b, OUTPUT);
  pinMode (c, OUTPUT);
  pinMode (d, OUTPUT);
  pinMode (e, OUTPUT);
  pinMode (f, OUTPUT);
  pinMode (g, OUTPUT);
}

void loop() {

  int nilaiADC = analogRead(A0);

  conValue = map(nilaiADC, 0, 1023, 0, 9);
  Serial.print("ADC A0: ");
  Serial.println(analogRead(A0));
  Serial.print("conversi: ");
  Serial.println(conValue);
  delay(200);

  // menampilkan angka 0
  if (conValue == 0) {
    digitalWrite (a, 0); // karena seven segment common anode maka aktif LOW
    digitalWrite (b, 0);
    digitalWrite (c, 0);
    digitalWrite (d, 0);
    digitalWrite (e, 0);
    digitalWrite (f, 0);
    digitalWrite (g, 1);
  }


  // menampilkan angka 1
  if (conValue == 1) {
    digitalWrite (a, 1);
    digitalWrite (b, 0);
    digitalWrite (c, 0);
    digitalWrite (d, 1);
    digitalWrite (e, 1);
    digitalWrite (f, 1);
    digitalWrite (g, 1);
  }
  // menampilkan angka 2
  if (conValue == 2) {
    digitalWrite (a, 0);
    digitalWrite (b, 0);
    digitalWrite (c, 1);
    digitalWrite (d, 0);
    digitalWrite (e, 0);
    digitalWrite (f, 1);
    digitalWrite (g, 0);
  }
  // menampilkan angka 3
  if (conValue == 3) {
    digitalWrite (a, 0);
    digitalWrite (b, 0);
    digitalWrite (c, 0);
    digitalWrite (d, 0);
    digitalWrite (e, 1);
    digitalWrite (f, 1);
    digitalWrite (g, 0);
  }

  // menampilkan angka 4
  if (conValue == 4) {
    digitalWrite (a, 1);
    digitalWrite (b, 0);
    digitalWrite (c, 0);
    digitalWrite (d, 1);
    digitalWrite (e, 1);
    digitalWrite (f, 0);
    digitalWrite (g, 0);
  }

  // menampilkan angka 5
  if (conValue == 5) {
    digitalWrite (a, 0);
    digitalWrite (b, 1);
    digitalWrite (c, 0);
    digitalWrite (d, 0);
    digitalWrite (e, 1);
    digitalWrite (f, 0);
    digitalWrite (g, 0);
  }

  // menampilkan angka 6
  if (conValue == 6) {
    digitalWrite (a, 0);
    digitalWrite (b, 1);
    digitalWrite (c, 0);
    digitalWrite (d, 0);
    digitalWrite (e, 0);
    digitalWrite (f, 0);
    digitalWrite (g, 0);
  }

  // menampilkan angka 7
  if (conValue == 7) {
    digitalWrite (a, 0);
    digitalWrite (b, 0);
    digitalWrite (c, 0);
    digitalWrite (d, 1);
    digitalWrite (e, 1);
    digitalWrite (f, 1);
    digitalWrite (g, 1);
  }

  // menampilkan angka 8
  if (conValue == 8) {
    digitalWrite (a, 0);
    digitalWrite (b, 0);
    digitalWrite (c, 0);
    digitalWrite (d, 0);
    digitalWrite (e, 0);
    digitalWrite (f, 0);
    digitalWrite (g, 0);
  }

  // menampilkan angka 9
  if (conValue == 9) {
    digitalWrite (a, 0);
    digitalWrite (b, 0);
    digitalWrite (c, 0);
    digitalWrite (d, 0);
    digitalWrite (e, 1);
    digitalWrite (f, 0);
    digitalWrite (g, 0);
  }
}