//declaramos los pins de los LEDs
  int seg7[7] = {2, 3, 4, 5, 6, 7, 8};//a, b, c, d ,e ,f, g
  
  int numeros [10][7] = 
  {
    {1, 1, 1, 1, 1, 1, 0}, //0 
    {0, 1, 1, 0, 0, 0, 0}, //1
    {1, 1, 0, 1, 1, 0, 1}, //2
    {1, 1, 1, 1, 0, 0, 1}, //3
    {0, 1, 1, 0, 0, 1, 1}, //4
    {1, 0, 1, 1, 0, 1, 1}, //5
    {1, 0, 1, 1, 1, 1, 1}, //6
    {1, 1, 1, 0, 0, 0, 0}, //7
    {1, 1, 1, 1, 1, 1, 1}, //8
    {1, 1, 1, 0, 0, 1, 1}, //9
  };

  const int potPin=A1;

  
void setup() 
{
  // put your setup code here, to run once:
  for(int i=0; i<7; i++)
  {
    pinMode(seg7[i], OUTPUT);
  }

}

void loop() 
{
  // put your main code here, to run repeatedly:
  int potenciometro = analogRead(potPin);
  int numero = map(potenciometro, 0, 1023, 0, 9);
  esteNumero(numero);
  delay(100);

}

void esteNumero(int y)
{
  for(int x=0; x<7; x++)
  {
    digitalWrite(seg7[x], numeros[y][x]);
  }
}