//#include <Arduino.h>
//#include <Wire.h>
#include <LiquidCrystal PCF8574.h>

LiquidCrystal PCF8574 lcd (0x27)) // the LCD address to 8x27 for a 16 chars aut 2 Line display

int show = -1;

//2 custos characters
byte dotOff[] = { 
  0b00000,
  0b01010,
  0b00000, 
  0b10001,
  0b10001, 
  0b01110, 
  0b00000, 
  0b00000 };
byte dotOn[] = { 
  0b00000, 
  0b01010, 
  0b00000,
  0b01110,
  0b10001, 
  0b10001,
  0b00000, 
  0b00000 };


void setup() {
    lcd.begin(16, 2);  // initialize the lcd
    lcd.createChar(1, dotOff);
    lcd.createChar(2, dotOn);
}  // setup()