#include <ProTrinketKeyboard.h>

void setup()
{
  // start USB keyboard
  TrinketKeyboard.begin();
}

void loop()
{
  TrinketKeyboard.poll();

  // press CAPS_LOCK key
  TrinketKeyboard.pressKey(0, 0x39);
  TrinketKeyboard.pressKey(0, 0);

  delay(random(5000, 10000));

  // press GUI key
  TrinketKeyboard.pressKey(0, KEYCODE_LEFT_GUI);
  TrinketKeyboard.pressKey(0, 0);

  delay(random(5000, 10000));
}