keyboardButton

This library will work only on 32u4-based boards (Arduino Leonardo or Micro, SparkFun Pro Micro, Adafruit Feather etc) and only on pins with external interrupt support.

On Micro, Leonardo and other 32u4-based boards there are 5 external interrupts available on pins 0, 1, 2, 3, 7.

Example

#include <KeyboardButton.h>

void setup() {
  Keyboard.begin();

  KeyboardButton::enableButton(0, KEY_UP_ARROW);
  KeyboardButton::enableButton(1, KEY_DOWN_ARROW);
  
  KeyboardButton::enableButton(3, 'a');
  KeyboardButton::enableButton(7, 'b');
}

void loop() {
  KeyboardButton::updateButtons();
}

Useful links

• Arduino Keyboard Modifiers
• SparkFun tutorial: Turn your ProMicro into a USB Keyboard/Mouse

Tested with

• Pro Micro