#include <Servo.h>
#include <LiquidCrystal_I2C.h>
LiquidCrystal_I2C lcd(0x27, 16, 2);
Servo myservo;  // create servo object to control a servo

int potpin = A0; 
int val;   


void setup() 
{
  myservo.attach(2);  // attaches the servo on pin 9 to the servo object
  //
  lcd.init();
  lcd.backlight();
  lcd.setCursor(0, 0);
  lcd.print("VALVE OPENING");
  //lcd.setCursor(9, 1); lcd.print("%");

}

void loop() 
{
  val = analogRead(potpin);           
  val = map(val, 0, 1023, 0, 180);     
  myservo.write(val);                  
  delay(10); 
  lcd.setCursor(6, 1);
  
  lcd.print((val*100)/180);
  lcd.print("%");  
 }