int ledA=2;
int ledB=3;
int ledC=4;
int ledD=5;
int ledE=6;
int ledF=7;
int ledG=8;
int Com1=9;
int Com2=10;
int satuan = 9;
int puluhan =9;
int potensio = A7;
int hasil_baca;
int delaypot;

void setup() {
  pinMode(ledA, OUTPUT);
  pinMode(ledB, OUTPUT);
  pinMode(ledC, OUTPUT);
  pinMode(ledD, OUTPUT);
  pinMode(ledE, OUTPUT);
  pinMode(ledF, OUTPUT);
  pinMode(ledG, OUTPUT);
  pinMode(Com1, OUTPUT);
  pinMode(Com2, OUTPUT);
  pinMode(potensio, INPUT);
}

void satuan_segmen() {
   //no0
   if (satuan==0){
digitalWrite(ledA,0);
digitalWrite(ledB,0);
digitalWrite(ledC,0);
digitalWrite(ledD,0);
digitalWrite(ledE,0);
digitalWrite(ledF,0);
digitalWrite(ledG,1);
}
 
 //no1
 if (satuan==1){
digitalWrite(ledA,1);
digitalWrite(ledB,0);
digitalWrite(ledC,0);
digitalWrite(ledD,1);
digitalWrite(ledE,1);
digitalWrite(ledF,1);
digitalWrite(ledG,1);
}
 
 //no2
 if (satuan==2){
digitalWrite(ledA,0);
digitalWrite(ledB,0);
digitalWrite(ledC,1);
digitalWrite(ledD,0);
digitalWrite(ledE,0);
digitalWrite(ledF,1);
digitalWrite(ledG,0);
}

 //no3
 if (satuan==3){
digitalWrite(ledA,0);
digitalWrite(ledB,0);
digitalWrite(ledC,0);
digitalWrite(ledD,0);
digitalWrite(ledE,1);
digitalWrite(ledF,1);
digitalWrite(ledG,0);
}

 //no4
 if (satuan==4){
digitalWrite(ledA,1);
digitalWrite(ledB,0);
digitalWrite(ledC,0);
digitalWrite(ledD,1);
digitalWrite(ledE,1);
digitalWrite(ledF,0);
digitalWrite(ledG,0);
}
 
 //no5
 if (satuan==5){
digitalWrite(ledA,0);
digitalWrite(ledB,1);
digitalWrite(ledC,0);
digitalWrite(ledD,0);
digitalWrite(ledE,1);
digitalWrite(ledF,0);
digitalWrite(ledG,0);
}

 //no6
 if (satuan==6){
digitalWrite(ledA,0);
digitalWrite(ledB,1);
digitalWrite(ledC,0);
digitalWrite(ledD,0);
digitalWrite(ledE,0);
digitalWrite(ledF,0);
digitalWrite(ledG,0);
}

 //no7
 if (satuan==7){
digitalWrite(ledA,0);
digitalWrite(ledB,0);
digitalWrite(ledC,0);
digitalWrite(ledD,1);
digitalWrite(ledE,1);
digitalWrite(ledF,1);
digitalWrite(ledG,1);
}

 //no8
 if (satuan==8){
digitalWrite(ledA,0);
digitalWrite(ledB,0);
digitalWrite(ledC,0);
digitalWrite(ledD,0);
digitalWrite(ledE,0);
digitalWrite(ledF,0);
digitalWrite(ledG,0);
}

 //n09
 if (satuan==9){
digitalWrite(ledA,0);
digitalWrite(ledB,0);
digitalWrite(ledC,0);
digitalWrite(ledD,0);
digitalWrite(ledE,1);
digitalWrite(ledF,0);
digitalWrite(ledG,0);
}
}

void puluhan_segmen() {
   //no0
   if (puluhan==0){
digitalWrite(ledA,0);
digitalWrite(ledB,0);
digitalWrite(ledC,0);
digitalWrite(ledD,0);
digitalWrite(ledE,0);
digitalWrite(ledF,0);
digitalWrite(ledG,1);
}
 
 //no1
 if (puluhan==1){
digitalWrite(ledA,1);
digitalWrite(ledB,0);
digitalWrite(ledC,0);
digitalWrite(ledD,1);
digitalWrite(ledE,1);
digitalWrite(ledF,1);
digitalWrite(ledG,1);
}
 
 //no2
 if (puluhan==2){
digitalWrite(ledA,0);
digitalWrite(ledB,0);
digitalWrite(ledC,1);
digitalWrite(ledD,0);
digitalWrite(ledE,0);
digitalWrite(ledF,1);
digitalWrite(ledG,0);
}

 //no3
 if (puluhan==3){
digitalWrite(ledA,0);
digitalWrite(ledB,0);
digitalWrite(ledC,0);
digitalWrite(ledD,0);
digitalWrite(ledE,1);
digitalWrite(ledF,1);
digitalWrite(ledG,0);
}

 //no4
 if (puluhan==4){
digitalWrite(ledA,1);
digitalWrite(ledB,0);
digitalWrite(ledC,0);
digitalWrite(ledD,1);
digitalWrite(ledE,1);
digitalWrite(ledF,0);
digitalWrite(ledG,0);
}
 
 //no5
 if (puluhan==5){
digitalWrite(ledA,0);
digitalWrite(ledB,1);
digitalWrite(ledC,0);
digitalWrite(ledD,0);
digitalWrite(ledE,1);
digitalWrite(ledF,0);
digitalWrite(ledG,0);
}

 //no6
 if (puluhan==6){
digitalWrite(ledA,0);
digitalWrite(ledB,1);
digitalWrite(ledC,0);
digitalWrite(ledD,0);
digitalWrite(ledE,0);
digitalWrite(ledF,0);
digitalWrite(ledG,0);
}

 //no7
 if (puluhan==7){
digitalWrite(ledA,0);
digitalWrite(ledB,0);
digitalWrite(ledC,0);
digitalWrite(ledD,1);
digitalWrite(ledE,1);
digitalWrite(ledF,1);
digitalWrite(ledG,1);;
}

 //no8
 if (puluhan==8){
digitalWrite(ledA,0);
digitalWrite(ledB,0);
digitalWrite(ledC,0);
digitalWrite(ledD,0);
digitalWrite(ledE,0);
digitalWrite(ledF,0);
digitalWrite(ledG,0);
}

 //n09
 if (puluhan==9){
digitalWrite(ledA,0);
digitalWrite(ledB,0);
digitalWrite(ledC,0);
digitalWrite(ledD,0);
digitalWrite(ledE,1);
digitalWrite(ledF,0);
digitalWrite(ledG,0);
}
}

void matikan(){
  digitalWrite(2, 1);
  digitalWrite(3, 1);
  digitalWrite(4, 1);
  digitalWrite(5, 1);
  digitalWrite(6, 1);
  digitalWrite(7, 1);
  digitalWrite(8, 1);
}

void ulangan(){
for(int ulang=0; ulang<=delaypot; ulang++){
digitalWrite(Com1,1);
digitalWrite(Com2,0); //satuan
satuan_segmen();
delay(1);
matikan();
digitalWrite(Com1,0);
digitalWrite(Com2,1); //puluhan
puluhan_segmen();
delay(1);
matikan();
}
}

void loop() {
baca_pot();
ulangan();
satuan--;
if(satuan<0){
satuan=9;
puluhan--;}
if(puluhan<0){
  puluhan=0;
  satuan=0;
}
}


void baca_pot(){
  int val = analogRead(potensio);
  val = map(val, 0, 1023, 1000, 200);
  delaypot = val/2;
  //satuan = val % 10;
  //puluhan = ((val-satuan)/10);
}