#include <Keyboard.h>

long timetoReturn = 6000 * 5;

int timer = 0;
int Next_PIN = 2;
int Lang_PIN = 3;
int LangSelected = 0;
boolean LangChanged = false;


void setup() {
  delay(6000);
  pinMode(Next_PIN, INPUT);
  pinMode(Lang_PIN, INPUT);
  Keyboard.begin();
}


void start(){
  Keyboard.println(1);
  Keyboard.write(0xB0);
  delay(2000);
}

void lang(){
    if (LangSelected == 0) {
        LangSelected = 1;
    } else {
        if (LangSelected == 1) {
        LangSelected = 2;
    } else {
        if (LangSelected == 2) {
            LangSelected = 0;
        }
}

void next(){
  Keyboard.write(0xD7);
  timer = 0;
  delay(500);
}


void loop() {
  if (digitalRead(Next_PIN)) {
    next();
  }
  if (digitalRead(Lang_PIN)) {
    lang();
    LangChanged = true;
  }


    if (LangChanged) {
        LangChanged = false;

        if (LangSelected == 0) {
            Keyboard.println(10);
            Keyboard.write(0xB0);
            delay(2000);
        }

        if (LangSelected == 1) {
            Keyboard.println(17);
            Keyboard.write(0xB0);
            delay(2000);
        }

        if (LangSelected == 2) {
            Keyboard.println(3);
            Keyboard.write(0xB0);
            delay(2000);
        }
    }


  delay(10);
  timer++;
  if (timer > timetoReturn) {
    timer = 0;
     start();
  }
}