int led = 10;
int potenciometer = A0;


void setup() {
  // put your setup code here, to run once:
Serial.begin(9600);
pinMode(led, OUTPUT);
pinMode(potenciometer, INPUT);
}

void loop() {
  // put your main code here, to run repeatedly:
int potenciometerValue = analogRead(potenciometer);

int mappedPotenciometerValue = map(potenciometer, 0, 1023, 0, 255);

analogRead(led, mappedPotenciometerValue);

}