Hello,
Regarding the integration of Vegtrug with ESP32 I would be interested in some tests if you have some time.
If they broadcast data like the mi flora it should be easy to gather the data and integrate them into HA through MQTT.
The test would be the following:
- disconnect the sensor from your phone
- download beacon simulator app (android)
- do a scan
- note the service data values of the vegtrug while changing the luminiosity or temperature
- post the different service data here.
Once done, I could easily say you if you can use it with an esp32 firmware out of the box or if it will need some development