#include <Wire.h>
#include <LiquidCrystal.h>

LiquidCrystal lcd(12, 11, 5, 4, 3, 2); // Sesuaikan pin yang Anda gunakan

void setup() {
  lcd.begin(16, 2); // Inisialisasi LCD dengan ukuran 16x2
  Wire.begin();
  Serial.begin(9600);
  while (!Serial);
  Serial.println("\nI2C Scanner");
  lcd.print("I2C Scanner"); // Tampilkan pesan di LCD
  lcd.setCursor(0, 1);
  lcd.print("Scanning...");
}

void loop() {
  byte error, address;
  int nDevices;

  nDevices = 0;
  for (address = 1; address < 127; address++) {
    Wire.beginTransmission(address);
    error = Wire.endTransmission();
    if (error == 0) {
      lcd.clear();
      lcd.setCursor(0, 0);
      lcd.print("I2C device found");
      lcd.setCursor(0, 1);
      lcd.print("at address 0x");
      if (address < 16)
        lcd.print("0");
      lcd.print(address, HEX);
      lcd.setCursor(0, 2);
      lcd.print("!");
      Serial.print("I2C device found at address 0x");
      if (address < 16)
        Serial.print("0");
      Serial.print(address, HEX);
      Serial.println("  !");
      nDevices++;
    } else if (error == 4) {
      Serial.print("Unknown error at address 0x");
      if (address < 16)
        Serial.print("0");
      Serial.print(address, HEX);
    }
    delay(100); // Jeda kecil antara pemindaian
  }
  if (nDevices == 0) {
    lcd.clear();
    lcd.setCursor(0, 0);
    lcd.print("No I2C devices");
    lcd.setCursor(0, 1);
    lcd.print("found");
    Serial.println("No I2C devices found\n");
  } else {
    Serial.println("done\n");
  }

  delay(5000);
}