#include <Stepper.h>
#include <LiquidCrystal_I2C.h>

const int stepsPerRevolution = 200;
Stepper myStepper(stepsPerRevolution, 8, 9);
LiquidCrystal_I2C lcd(0x27, 16, 2);
const int pirPin = 2;
void setup() {
  pinMode(pirPin, INPUT);
  lcd.init();
  lcd.backlight();
  lcd.setCursor(0, 0);
  lcd.print("Motor is ready");
  lcd.setCursor(0, 1);
  lcd.print(" to launch");
  delay(1000);
  lcd.clear();
  myStepper.setSpeed(900);
  lcd.print("Please stay away !");
}

void loop() {
  if (digitalRead(pirPin) == HIGH) {
    myStepper.step(800);
    delay(500);
  }
  else {
    myStepper.step(0);

  }
}