#include <Servo.h>

Servo servo1;

void setup() {
  Serial.begin(820);
  pinMode(2,INPUT_PULLUP);
}

void loop() {
  int var = digitalRead(2);
  if(var == 0){
    servo1.attach(9);
    servo1.write(90);
  }else{
    servo1.attach(9);
    servo1.write(0);
  }
}