#include<Servo.h>
Servo brazito;
void setup() {
  // servo se mueve de 0 -45-90- 180
brazito.attach(9); 
}

void loop() {
  // put your main code here, to run repeatedly:
brazito.write(0);
delay(500);
brazito.write(45);
delay(1000);
brazito.write(90);
delay(1000);
}