#include <LiquidCrystal_I2C.h>

// Set the I2C address and LCD dimensions (16x2)
LiquidCrystal_I2C lcd(0x27, 16, 2);

// Define the potentiometer pin
const int potPin = A0;

void setup() {
  // Initialize the LCD and turn on the backlight
  lcd.init();
  lcd.backlight();
  
  // Print a welcome message
  lcd.setCursor(0, 0);
  lcd.print("ADC1: ");
}

void loop() {
  // Read the value from the potentiometer (0 to 1023)
  int potValue = analogRead(potPin);
  
  // Calculate the corresponding voltage (assuming a 5V system)
  float voltage = potValue * (5.0 / 1023.0);
  
  // Convert the potentiometer value to a percentage (0 to 100)
  int percentage = map(potValue, 0, 1023, 0, 100);

  // Display the ADC value, voltage, and percentage on the LCD
  lcd.setCursor(0, 0); // Set cursor to the first line
  lcd.print("ADC1: ");
  lcd.print(potValue);
  
  lcd.setCursor(0, 1); // Set cursor to the second line
  lcd.print("V: ");
  lcd.print(voltage, 2); // Display voltage with 2 decimal places
  lcd.print("V ");
  lcd.print(percentage);
  lcd.print("%   ");  // Adding spaces to clear previous text

  // Small delay to avoid flickering
  delay(500);
}