#include <ESP32Servo.h>
#include <LiquidCrystal_I2C.h>

#define BTN_LEFT 18
#define BTN_RIGHT 19
#define SERVO_PIN 14

Servo servo;
int posisi = 90;

LiquidCrystal_I2C lcd(0x27, 16, 2);

void setup() {
  pinMode(BTN_LEFT, INPUT_PULLUP);
  pinMode(BTN_RIGHT, INPUT_PULLUP);

  servo.attach(SERVO_PIN);
  servo.write(posisi);

  lcd.init();
  lcd.backlight();
  lcd.setCursor(0,0);
  lcd.print("Servo Angle:");
}

void loop() {
  if (digitalRead(BTN_LEFT) == LOW) {
    posisi--;
    if (posisi < 0) posisi = 0;
    servo.write(posisi);
    updateLCD();
    delay(150);
  }

  if (digitalRead(BTN_RIGHT) == LOW) {
    posisi++;
    if (posisi > 180) posisi = 180;
    servo.write(posisi);
    updateLCD();
    delay(150);
  }
}

void updateLCD() {
  lcd.setCursor(0,1);
  lcd.print("Derajat: ");
  lcd.print(posisi);
  lcd.print("   "); // hapus sisa angka
}