We have to download a Google application to be able to connect our smartphone to the HC05 Bluettoth module [just above oon the left].

After connected to the bluetooth module [called "linvor"] we can receive NMEA frame from the GPS device like that :

4713.4742 N means that our lattitude is 47 degree north and 13.4742 minutes.

After convert all the coordonates to degree numbers we can add those localisation points in a CSV (Coma separator value) file like this :

At the end it is very easy to create a map from those beacons from the website 

https://umap.openstreetmap.fr

You just have to import the CSV file in the "umap" map.

Here we see all the bacons embedded is the map.

Great job to this group for this work!