Last Friday I got some spare time (finally!) and, with the help and tools of my friend Alfredo, we placed a button in the RaspberryPi case so, when I push it, a custom command its executed on the RaspberryPi, like for example, a clean system shutdown.
First lets start with some pictures of the final result:
And now the schematics (pins used in the schematics are 3.3v, GND and GPIO):
