#include <ESP32Servo.h>
#include <LiquidCrystal_I2C.h>
LiquidCrystal_I2C lcd(0x27, 16, 2);
#include <Wire.h>
#include <Adafruit_GFX.h>
#include <Adafruit_SSD1306.h>
#include <Stepper.h>
#define SCREEN_WIDTH 128 
#define SCREEN_HEIGHT 64 
#define led 32
Adafruit_SSD1306 oled(SCREEN_WIDTH, SCREEN_HEIGHT, &Wire, -1);
const int stepsPerRevolution = 200;
const int servoPin = 18;
Servo servo;
Stepper myStepper(stepsPerRevolution, 15, 2, 0, 4);

void setup() {
  pinMode(led, OUTPUT);
  myStepper.setSpeed(60);
  Serial.begin(9600);
  servo.attach(servoPin, 500, 2400);
  Wire.begin(21, 22);
  lcd.init();
  lcd.backlight();
  Serial.begin(9600);
  if (!oled.begin(SSD1306_SWITCHCAPVCC, 0x3C)) {
    Serial.println(F("failed to start SSD1306 OLED"));
    while (1);
  }
  delay(2000);         
  oled.clearDisplay(); 
  oled.setTextSize(1);        
  oled.setTextColor(WHITE);    
  oled.setCursor(0, 2);       
  oled.println("Weerapat"); 
  oled.display();  
}
int pos = 0;

void loop() {
  digitalWrite(led, HIGH);
  for (pos = 0; pos <= 180; pos += 1) {
    servo.write(pos);
    delay(15);
  }
  for (pos = 180; pos >= 0; pos -= 1) {
    servo.write(pos);
    delay(15);
  }
  lcd.setCursor(0,0);
  lcd.print("Hello");
  lcd.setCursor(0, 1);
  lcd.print("Weerapat");
  delay(2000);
  lcd.clear();
  Serial.println("clockwise");
  myStepper.step(stepsPerRevolution);
  delay(500);
  Serial.println("counterclockwise");
  myStepper.step(-stepsPerRevolution);
  delay(500);
}