Arduino Easy Timer 16*2 LCD

// Timer program v.0.9 beta, Author: Szerzetes, Licenc: free
#include <Wire.h>
#include <LiquidCrystal_I2C.h> // https://bitbucket.org/fmalpartida/new-liquidcrystal/downloads
#include <Timer.h>
#include <EEPROM.h>

Timer t;

#define KeySetting 10
#define KeyPlus 11
#define KeyMinus 12
#define Relay 9       // The number of outputs that the timer switches
//                    addr, en,rw,rs,d4,d5,d6,d7,bl,blpol
LiquidCrystal_I2C lcd(0x27, 2, 1, 0, 4, 5, 6, 7, 3, POSITIVE);

int Time,TimeKey;
byte TimeLow,TimeHigh;
void setup()
{
  pinMode(KeySetting,INPUT);
  pinMode(KeyPlus,INPUT);
  pinMode(KeyMinus,INPUT);
  pinMode(Relay,OUTPUT);
  digitalWrite(KeySetting,HIGH);
  digitalWrite(KeyPlus,HIGH);
  digitalWrite(KeyMinus,HIGH);
// *********************************** Write here what happens when the timer is switched on *********************************
  digitalWrite(Relay,HIGH);
// *********************************** Relay output is set ***********************************
lcd.begin(16,2);
  TimeLow=EEPROM.read(0);
  TimeHigh=EEPROM.read(1);
  if (TimeHigh==0 and TimeLow==0) TimeLow=1;  // If EEPROM is empty, the time value will be 1 secundum
  Time=TimeHigh*256+TimeLow;
int tickEvent = t.every(1000, tikkel, 100 );
  TimeKey=500;
}

void loop() {
  if (digitalRead(KeySetting)==1) {
    t.update();
  }
  else {
    lcd.clear();
    lcd.print("Time setting: ");
    TimeLow=EEPROM.read(0);
    TimeHigh=EEPROM.read(1);
    Time=TimeHigh*256+TimeLow;
    while (digitalRead(KeySetting)==0) {
      if (digitalRead(KeyPlus)==0 ) {
        Time++;
        if (Time>=600) Time=600;
        delay(TimeKey);
        if (TimeKey>=50) TimeKey-=30;
        goto PushEnd;
      } // endif
      if (digitalRead(KeyMinus)==0 ) {
        Time--;
        if (Time<=0) Time=1;
        delay(TimeKey);
        if (TimeKey>=50) TimeKey-=30;
        goto PushEnd;
      }
      TimeKey=500;
PushEnd:
      lcd.setCursor(1,1);
      TimePrintLCD();
    }
    lcd.setCursor(10,1);
    lcd.print("Save");
    TimeHigh=Time/256;
    TimeLow=Time-256*TimeHigh;
    EEPROM.write(0,TimeLow);
    EEPROM.write(1,TimeHigh);
    delay(2000);
    lcd.clear();
  }
}

void tikkel() {
  if (Time==0) {
    lcd.setCursor(0,0);
    lcd.print("Time over. ");
// ************************************ Write here what happens when the timer is switched off. ***************************************
  digitalWrite(Relay,LOW);
// *********************************** Relay output is reset ***********************************
  }
  else {
    Time--;
    lcd.setCursor(0,0);
    lcd.print("Time: ");
    TimePrintLCD();
  }
}

void TimePrintLCD() {
  byte TMinute, TSecundum;
  String tmp;
  TMinute=Time/60;
  TSecundum=Time-TMinute*60;
  tmp=""; if (TMinute<=9) tmp= "0";
  lcd.print(tmp);
  lcd.print(TMinute);
  lcd.print(":");
  tmp=""; if (TSecundum<=9) tmp= "0";
  lcd.print(tmp);
  lcd.print(TSecundum);
}