*  [[https://www.youtube.com/watch?v=bYHXUECdQAg|Make a Raspberry Pi Portable Arcade Console (with Retropie and GPIO pins)]]
  *  [[https://www.loveroms.com|Reliable rom site]]
  *  [[https://www.emuparadise.me/| Reliable rom site]]
  *  [[https://www.stderr.nl/Blog/Hardware/RaspberryPi/PowerButton.html|Power down the Raspberry Pi with a button]]
  *  [[https://www.youtube.com/watch?v=NAl-ULEattw|Raspberry Pi: Using GPIO Inputs - Explaining Computers]]
  *  [[https://www.raspberrypi.org/blog/using-the-gpio/|raspberrypi.org/blog/ raspberrypi.org - Using the gpio]]