int getInput(){
   int i, serAva;                           // i is a counter, serAva hold number of serial available
   char inputBytes [4]={'0','0','0','\0'};                 // Array hold input bytes
   char * inputBytesPtr = &inputBytes[0];  // Pointer to the first element of the array

   while((serAva=Serial.available())<=0){
     delay(50);
   }
   for (i=0; i<serAva; i++){       // Load input bytes into array
     int b=Serial.read();
     Serial.print(b,DEC);
     inputBytes[i+(3-serAva)] = b;
   }
   Serial.print(inputBytes[0]);
   Serial.print(inputBytes[1]);
   Serial.print(inputBytes[2]);
   Serial.println(inputBytes[3]);
   return atoi(inputBytesPtr);    // Call atoi function and return result
}