#include <LiquidCrystal_I2C.h>

LiquidCrystal_I2C lcd(0x27, 20, 4);
void setup() {
  // put your setup code here, to run once:
  lcd.init();
  lcd.backlight();
pinMode(A0, INPUT);
Serial.begin(9600);
}

void loop() {
  // put your main code here, to run repeatedly:
int potensiometer =analogRead(A0);  //pembacaaan nilai adc potensiometere
float tegangan = potensiometer* (5.0/1023.0); //pembacaan nilai tegangan
Serial.print("nilai ADC potensiometer ="); //menampilkan hasilny
Serial.println(potensiometer); //memunculkan nilai yang ada pada .print
Serial.print("nilai tegangan potensiometer =");
Serial.println(tegangan);
delay(1000);
}