#include <LCD_I2C.h>
LCD_I2C lcd(0x27, 16, 2); 
int mode = 0;
void setup()
{
    lcd.begin(); 
    lcd.backlight();
    pinMode(A0, INPUT_PULLUP);
    pinMode(A1, INPUT_PULLUP);
    pinMode(A2, INPUT_PULLUP);
}
void loop()
{
 if(analogRead(A1) == LOW)
 {
   mode = mode + 1;
   delay(180);
 }
 if(analogRead(A2) == LOW)
 {
   mode = mode - 1;
   if(mode<0) mode = 0;
   delay(180);
   lcd.clear();
 }
   lcd.setCursor(0,0);
   lcd.print("Button   :");
   lcd.setCursor(11,0);
   lcd.print(mode);
 int n=analogRead(A0);
   analogWrite(6,n);
   lcd.setCursor(0,1);
   lcd.print("Potentio :");
   lcd.setCursor(11,1);
   lcd.print(n);
   delay(180);
   lcd.clear();
}