         }
         draw_save_settings();
         break;
+      case 13 :
+        if (lcd_button == BP_RIGHT) {
+          draw_about_screen();
+        }
+        draw_about_menu_item();
+        break;
       default :
         calibration_item = 1;
       }

boolean calibration_mode = false;
unsigned int calibration_item = 0;

int menu_items_number = 12;
const char* line1_options[3] = {"Angle", "Throttle", "Brake"};
const char* line2_options[2] = {"Throt-Brake", "Angle"};

// non blocking ops times
unsigned long execution_intervals[4][2]; // 4 intervals(servo bluetooth, drawscreen & nunchuk), with 2 values each(duration, last)

/* Main loop */
void loop() {

  draw_menu();

  if (!calibration_mode) {
    acquire_data();
