int btval = 0;
int btc = 0;
int Vpot;
void setup() {
  pinMode(A0, INPUT);
  pinMode(13, INPUT);
  pinMode(12, OUTPUT);
  pinMode(11, OUTPUT);
  pinMode(10, OUTPUT);
  Serial.begin(9600);
}

int buton(){
  int bt = digitalRead(13);
  btval = btval + bt;
  int b = btval%2;
  if (b == 0){
    btc = 0;
  }
  else{
    btc = 1;
  }
  return btc;
}

void loop(){
  btc = buton();
  int Valpot = analogRead(A0);
  Serial.print("Vpot : ");
  Serial.println(Vpot);
  if (Valpot == 0) {                  
    Vpot = 0;
  }
  else if (Valpot < 255) {
    Vpot = 1;
  }
  else if (Valpot < 510) {
    Vpot = 2;
  }
  else if (Valpot < 765) {
    Vpot = 3;
  }
  else if (Valpot == 1023) {
    Vpot = 5;
  }
  else  {
    Vpot = 4;
  }
  
  if (btc == 0){
    if (Vpot == 0){
 	    digitalWrite(10, 0);
        digitalWrite(11, 0);
        digitalWrite(12, 0);
   		}
    else if (Vpot == 1){
 	    digitalWrite(10, 1);
        digitalWrite(11, 0);
        digitalWrite(12, 0);
    	}
    else if (Vpot == 2){
 	    digitalWrite(10, 1);
        digitalWrite(11, 1);
        digitalWrite(12, 0);
   		}
    else{
 	    digitalWrite(10, 1);
        digitalWrite(11, 1);
        digitalWrite(12, 1);
     	}
    }
  
  else{
    if (Vpot == 0){
 	    digitalWrite(10, 0);
        digitalWrite(11, 0);
        digitalWrite(12, 0);
   		}
    else if (Vpot == 1){
 	    digitalWrite(10, 0);
        digitalWrite(11, 0);
        digitalWrite(12, 1);
    	}
    else if (Vpot == 2){
 	    digitalWrite(10, 0);
        digitalWrite(11, 1);
        digitalWrite(12, 1);
   		}
    else{
 	    digitalWrite(10, 1);
        digitalWrite(11, 1);
        digitalWrite(12, 1);
     	}
    }
  Serial.println(btc);
  delay(1000);
}