A simple project made a FabLab in Avignon, for the door opening, featuring an Arduino Uno with a GSM Shield and what ever board (or maybe a computer) who runs the Python Backend.
This is the workflow :
You send a SMS -> The Arduino stores it in RAM -> The Backend asks for latest received SMS and check in the database -> The backend tells the Arduino to trigger a relay who enables the outdoor button(or not :D) -> You push the button and the door opens !
Building and uploading to Arduino :
- Arduino from the Arduino website, not from
apt! apt install arduino-mkapt install python python-serial
Using the python backend :
apt install python python-serial python-mysqldb python-configparser