#include <LiquidCrystal_I2C.h>
LiquidCrystal_I2C lcd(0x27, 16, 2);

const int potPin = A0; 
int potValue = 0;  
int mappedValue = 0; 

void setup() {
  lcd.begin(16, 2);
  lcd.backlight();
  pinMode (3, OUTPUT);
  pinMode (6, OUTPUT);
  pinMode (5, OUTPUT);
  Serial.begin(9600); 
}

void loop() {
  potValue = analogRead(potPin);
  mappedValue = map(potValue, 0, 1023, 0, 100);
  lcd.setCursor(0, 0);
  lcd.print("Perputaran : ");
  lcd.setCursor(13, 0);
  lcd.print(mappedValue);
  if (mappedValue <= 33)
  {
    analogWrite(3, mappedValue);
    analogWrite(6, 0);
    analogWrite(5, 0);
  }  
  if (mappedValue >= 36 && mappedValue <= 66)
  {
    analogWrite(3, mappedValue);
    analogWrite(6, mappedValue);
    analogWrite(5, 0);
  }
  if (mappedValue >= 67 && mappedValue <= 99)
  {
    analogWrite(3, mappedValue);
    analogWrite(6, mappedValue);
    analogWrite(5, mappedValue);
  }
  if (mappedValue == 100)
  {
    analogWrite(3, mappedValue);
    analogWrite(6, mappedValue);
    analogWrite(5, mappedValue);
    delay(100);
    analogWrite(3, 0);
    analogWrite(6, 0);
    analogWrite(5, 0);
    delay(100);
    lcd.clear();
  }
  delay(10); 
}