#include <Wire.h>
#include <LiquidCrystal_I2C.h>
#define LDR_PIN A0
LiquidCrystal_I2C lcd(0x27, 20, 4);
void setup() {
pinMode(LDR_PIN, INPUT);
lcd.init();
lcd.backlight();
lcd.begin(20, 4);
}
void loop() {
int ldrValue = analogRead(LDR_PIN);
lcd.clear();
lcd.setCursor(0, 0);
lcd.print("LDR Value: ");
lcd.print(ldrValue);
lcd.setCursor(0, 1);
lcd.print("Room: ");
if (ldrValue < 500) {
lcd.print("Dark ");
} else {
lcd.print("Light!");
}
delay(100);
}