#include <SoftwareSerial.h>
#include <Servo.h>

SoftwareSerial mySerial(0, 1); // RX, TX
Servo servo;

void setup() {
  pinMode(8, OUTPUT);
}

void loop() {
    digitalWrite(8, HIGH);
    delayMicroseconds(3000);
    digitalWrite(8, LOW);
    delayMicroseconds(3000);
}