int8_t p[10]={15,2,0,4,16,17,5,18,19,21};
int16_t adc;
int8_t limite;

void setup() 
{
  for(int8_t n=0; n<=9;n++)pinMode(p[n],OUTPUT);
  Serial.begin(115200);
}

void loop() 
{
  adc=analogRead(34);
  Serial.println(adc);
  limite=(9.0/4095)*adc;
  Serial.println(limite);
  Serial.println();
  for(int8_t n=0; n<=limite;n++)
  {
    digitalWrite(p[n], HIGH);
    delay(200);
    digitalWrite(p[n], LOW);
  }
}