stay-awake.ino

// Presses F15 every 30 seconds to keep a computer awake
// Tested on an Arduino Micro

#include <Keyboard.h>

void setup() {
  // Initialize digital pin LED_BUILTIN as an output.
  pinMode(LED_BUILTIN, OUTPUT);

  // Initialize keyboard library
  Keyboard.begin();
}

void loop() {
  digitalWrite(LED_BUILTIN, HIGH);   // Turn on the LED

  // Push F15 for 200ms
  Keyboard.press(KEY_F15);           
  delay(200);           
  Keyboard.release(KEY_F15);

  digitalWrite(LED_BUILTIN, LOW);    // Turn off the LED
  delay(30000);                      // Wait 30 seconds to run again
}