Very nice - will you be prepared to share that at some point ? I could see some good use cases for this - i was previously - playing around with the Monitor stuff from HA - but was not really comfortable with it just being a Bash script.
Craig
I thought it would be better to make a separate topic here
@kuema 
I guess you have already worked this out, this is then maybe just an example of how I just configured a esp32 device as an iBeacon scanner according to your idea
Ordered a couple of esp32 devices from here: https://www.aliexpress.com/item/32996463686.html?spm=a2g0s.9042311.0.0.461e4c4ddEXHi2
Used this esp project: "A BLE to MQTT bridge running on an ESP32"
The result:
2 Likes
Yes, I think I even tried the same project, but hit some issues with my ESP32 boards. Also spare time is in high demand these days, but I plan to continue soon. 
Nice Raspberry rack by the way 
