i use a ESP32 C3 Annex32-C3 BLE CAN 1.50.8 qio LFS
There are these cheap devices for € 2,
With this program I can read continuously up to 3Hz,
From the reception strength in "-db" you can determine the distance, and triangular location also works well.
The "Beacon Simulator" app with a BLE 5 capable phone is very helpful. I use Samsung S9plus to see everything.
What unfortunately does not work is the determination of all cell phones, all apples and Samsung send min 70m their Mac code. (normal BLE works, however) you can build very well presence detectors that the boss see (or woman) Everyone carries their own bug with them. It is very interested Francesco! The app can see that, Annex is not yet.
Code: [Local Link Removed for Guests]
'0 {"count": 1,"Devices": [{"Name": "","Address": "e0:9d:13:e4:21:9d","RSSI": -82,"Manufacturer_data": "75004204010144e09d31a7219de29d13a7219c01000000000000"}]}
anf:
bluetooth.scan 1
pause 200
tmp$ = BLUETOOTH.SCANRESULT$
BLUETOOTH.CLEAR
kwhin$ = WORD.EXTRACT$(tmp$, "Name", "}]}")
if kwhin$ <> "" then wlog kwhin$
goto anf