#include <LiquidCrystal_I2C.h>
#define LDR_PIN A0
LiquidCrystal_I2C lcd(0x27, 16, 2);
void setup() {
lcd.init();
lcd.backlight();
lcd.setCursor(0, 0);
lcd.print("Sensor Cahaya");
lcd.setCursor(0, 1);
lcd.print("Inisialisasi...");
delay(2000);
lcd.clear();
}
void loop() {
int nilaiLDR = analogRead(LDR_PIN);
// Tampilkan nilai LDR dengan padding
lcd.setCursor(0, 0);
lcd.print("Cahaya: ");
lcd.print(nilaiLDR);
lcd.print(" "); // Bersihkan sisa teks
// Tentukan kondisi cahaya
lcd.setCursor(0, 1);
if (nilaiLDR < 300) {
lcd.print("Keadaan: Gelap ");
} else if (nilaiLDR < 700) {
lcd.print("Keadaan: Redup ");
} else {
lcd.print("Keadaan: Terang ");
}
delay(1000);
}