Hello everybody!! First of all you will notice that English is not my first lenguage so if you dont understand something just ask. So I recently bought Prusa i3 printer and I'm surprised that it doesn't have auto power off when print finishes!!!!!! So I was doing some research about how this printer works and I think it could be possible to modify the Marlin firmware to send a signa to an Arduinol through one of the unused pins of the Ramps and then power off the printer using some kind of relay. So what I'm asking here is if someone knows something about Marlin firmware to help me start with this. I was looking at the GuiAction.h and found a function called action_finish_print that could be modified to send a signal through a pin but I'm not sure if it's even possible or what pins can I use, etc. Every comment, help, suggestion... is welcome and thankful
