int led = 10;
int x = 0;

void setup() {
  // put your setup code here, to run once:

pinMode(led,OUTPUT);
Serial.begin(9600);

}

void loop() {
  // put your main code here, to run repeatedly:

for(x=0;x<=255;x=x+10){
analogWrite(led,x);
Serial.println(map(x,0,255,0,5));
delay(100);}

//gostaria de substituir esse delay por um millis
}