(quite bad) arduino external reset device code for https://github.com/wiiu-wasteland/prsh_exploit_bruteforce

resetmgr.ino

#include <Servo.h>

#define CONSOLE_RESET_TIMEOUT    40000

///////////////////////////////////////////////////////////
// Automatic restart timer
///////////////////////////////////////////////////////////

unsigned long timerBase = 0;
bool timerEnabled = true;

void disableTimer()
{
  timerEnabled = false;
}

void resetTimer()
{
  timerBase = millis();
}

unsigned long readTimer()
{
  return millis() - timerBase;
}

///////////////////////////////////////////////////////////
// Automatic console restart
///////////////////////////////////////////////////////////

Servo pwrControlServo;

void togglePower()
{
  pwrControlServo.write(71);
  delay(150);
  pwrControlServo.write(83);
  delay(150);
}

void sendPowerButton()
{
  digitalWrite(7, HIGH);
  delay(250);
  digitalWrite(7, LOW);
}

void doRestart()
{
  togglePower();
  delay(250);
  sendPowerButton();
  resetTimer();
}

void consoleRestartCheck()
{
  if (timerEnabled && (readTimer() > CONSOLE_RESET_TIMEOUT)) {
    Serial.println("Restarting the console since the timeout expired...");
    doRestart();
  }
}

///////////////////////////////////////////////////////////
// Console signals processing
///////////////////////////////////////////////////////////

unsigned long changeDelay[10] = {0};
unsigned long lastGpioChange = 0;
int lastGpioStatus = LOW;

void sensorbarGpioCheck()
{
  int gpioStatus, i;
  unsigned long now;

  gpioStatus = digitalRead(2);
  if (gpioStatus == lastGpioStatus) {
    return;
  }

  now = millis();

  for (i = 9; i > 0; i--) {
    changeDelay[i] = changeDelay[i-1];
  }
  changeDelay[0] = now - lastGpioChange;

  lastGpioChange = now;
  lastGpioStatus = gpioStatus;

  Serial.println(changeDelay[0]);
  //pinMode(13, gpioStatus);

  bool s_running = true;
  for (i = 0; i < 4; i++) {
    s_running &= ((changeDelay[i] > 200) && (changeDelay[i] < 300));
  }
  if (s_running) {
    resetTimer();
    Serial.println("Detected running signal; timeout reset");
    return;
  }

  bool s_complete = true;
  for (i = 0; i < 9; i++) {
    s_complete &= ((changeDelay[i] > 900) && (changeDelay[i] < 1100));
  }
  if (s_complete) {
    disableTimer();
    Serial.println("Detected success signal; timeout disabled");
    Serial.println("Exploit successful!\n");
    tone(11, 1000);
    return;
  }
}


///////////////////////////////////////////////////////////
// Main program
///////////////////////////////////////////////////////////
void setup()
{
  Serial.begin(9600);

  pinMode(11, OUTPUT);
  digitalWrite(11, LOW);

  pinMode(7, OUTPUT);
  digitalWrite(7, LOW);

  pinMode(13, OUTPUT);
  digitalWrite(13, LOW);

  /* monitor changes on the sensorbar GPIO pin to
   * determine if the console is still alive. */
  pinMode(2, INPUT);
  digitalWrite(2, LOW);

  /*
   * The reset button servo; if you have suitable
   * relay, mosfets or literally anything else,
   * please use them instead (modifying the code
   * should be simple)
   */
  pwrControlServo.write(83);
  pwrControlServo.attach(9);
  delay(250);

  /*
   * Reset the automatic restart timer
   */
  resetTimer();
}

void loop() {
  sensorbarGpioCheck();
  consoleRestartCheck();
}