Temperature measurement in the sauna v1.0 rooms

The project is a microcontroller device that measures the temperature of the air in the sauna rooms and transmits data to the server on the Internet. The indications are stored in the database and then displayed on the indicators and on the graphs WEB the page that is displayed on a large monitor in the sauna vestibule. This device is currently operating successfully in one of the Saunas in Toronto, Canada. (I personally did only the hardware part and the writing of the controller's screw.)