Turn on computer using Internet of Things

mobo-power.ino

/**
 * Mobo Power - Copyright 2015 Carter Yagemann
 * 
 * This program allows a core to power on a motherboard over the internet!
 * 
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 * 
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU General Public License for more details.
 */

void setup() {
    // D0 will control the motherboard
    pinMode(D0, OUTPUT);

    // ATX boards maintain high power on their power pin and then ground
    // shortly to signal that the motherboard should power up. So we
    // normally want the pin to be in the high state.
    digitalWrite(D0, HIGH);

    // Register a function with Particle's cloud service so we can invoke
    // the core from over the internet.
    Spark.function("poweron", powerOn);
}

void loop() {
    // Nothing to do
}

int powerOn(String command) {
    // Switch the pin to low for half a second so the motherboard knows
    // it's time to turn on.
    digitalWrite(D0, LOW);
    delay(500);
    digitalWrite(D0, HIGH);

    return 1;
}