#include <LiquidCrystal_I2C.h>

LiquidCrystal_I2C lcd(0x27,16,2);


byte x[] = {
  B00000,
  B00000,
  B10001,
  B01010,
  B00100,
  B01010,
  B10001,
  B00000
};

byte d[] = {
  B00000,
  B11000,
  B10100,
  B10010,
  B10010,
  B10100,
  B11000,
  B00000
};


void setup() {
  lcd.init(); // aktivace lcd
  lcd.backlight(); //aktivace podsvícení
  lcd.setCursor(0,0); // nastaví kde to má psát
  lcd.print("zdary"); //vypíše

  lcd.createChar(0, x);
  lcd.createChar(1, d);

}

void loop() {
lcd.print("   ");
lcd.write(0);
lcd.write(1);
lcd.setCursor(0,1);
float napeti = analogRead(A1)/(1023/5.0);
lcd.print(String("napeti je ") + napeti + String("V"));
lcd.setCursor(0,2);



}