_                              _
    | |                            | |
  __| | ___   ___  _ __ _ __  _   _| |_ ___ _ __
 / _` |/ _ \ / _ \| '__| '_ \| | | | __/ _ \ '__|
| (_| | (_) | (_) | |  | |_) | |_| | ||  __/ |
 \__,_|\___/ \___/|_|  | .__/ \__,_|\__\___|_|
                       | |
                       |_|

Open da door:
$ sudo -i
# echo O > /dev/ttyUSB0