#include <LiquidCrystal_I2C.h>
int pinsensor = A3;
int ledmerah = 6;
int nilaiPotensiometer;
int persentase;

LiquidCrystal_I2C lcd(0x27, 16, 2);
void setup() {
  pinMode(pinsensor, INPUT);
  pinMode(ledmerah, OUTPUT);
  lcd.begin(16, 2);
  lcd.clear();
  lcd.print("Persentase: ");
}
 void loop() {
 nilaiPotensiometer = analogRead(pinsensor);
 persentase = map(nilaiPotensiometer, 0, 1023, 0, 100);
 
 analogWrite(ledmerah, nilaiPotensiometer / 4);
 
lcd.setCursor(12, 0);
 lcd.print(" "); 
 lcd.setCursor(12, 0);
 lcd.print(persentase);
 lcd.print("%");

 delay(100);
}