#include <Servo.h>

#define SECOND 1000

Servo Servo1;
unsigned long last = 0;
int pos = 0;


void setup() {
  // put your setup code here, to run once:
  Serial.begin(115200);
  pinMode(12, OUTPUT);
  pinMode(11, OUTPUT);
  Servo1.attach(12);
  Servo1.write(0);

}

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


  unsigned long now = millis();
  if (now - last >= SECOND) {
    last = now;
    if (pos == 0)pos = 180; else pos = 0;
    Servo1.write(pos);
    digitalWrite(11, pos);
  }



}