[SpalonaATmega]

juz naprawilem
oto nowy kod

#include <LiquidCrystal_I2C.h>


LiquidCrystal_I2C lcd(0x27, 16, 2);

int readPin = A0;
int readValue;

void setup() {
// put your setup code here, to run once:
lcd.init();
lcd.backlight();

pinMode(readPin, INPUT);
Serial.begin(9600);
}

void loop() {
// put your main code here, to run repeatedly:
readValue = analogRead(readPin);
lcd.clear();
lcd.setCursor(1,0);
lcd.print("Poziom Wody:");
lcd.setCursor(1,1);
if( readValue < 450){
lcd.print("Niski");
}else if( readValue < 720){
lcd.print("Sredni");
}else if( readValue < 800){
lcd.print("Wysoki");
}

delay(1000);
}