#include <Servo.h>
int pb = 2;
int pinled = 12;
Servo myservo;
void setup() { 
 myservo.attach(9);
 pinMode(pb, INPUT_PULLUP);
 pinMode(pinled, OUTPUT);
}

void loop() {
int bacapb = digitalRead(pb);
if (bacapb == LOW){
  digitalWrite(pinled, HIGH);
  myservo.write(90);
  delay(200);
}
if (bacapb == LOW){
  digitalWrite(pinled, LOW);
  myservo.write(0);
  delay(200);
}
}