Reply To: Shutdown RPI running RetroPie Home › Forums › RetroPie Project › New to RetroPie? Start Here! › Shutdown RPI running RetroPie › Reply To: Shutdown RPI running RetroPie 03/16/2016 at 08:15 #120558 ziguranaParticipant I use this approach http://blog.petrockblock.com/forums/topic/simple-gpio-shutdown-button-no-resistorspythonlibrariesdriverscor-poll/#post-94854. This will not actually switch off the power, but allows you to have a button that boots/shuts down the system nicely so you can remove the power-supply from the wall socket without worrying about the SD card. total BOM: two wires and a button.