A year ago I read about radpro, an open source firmware which turns mediocre chinese geiger counters into great geiger counters. I got one, not because I need a geiger counter but who doesn't want to have a decent radiation detector to play with for ~40€.
Now someone cool built radpro-wifi-bridge, a esp32-s3 firmware that connects radpro to a mqtt broker using the esp32's wifi. And it works! Soon my home assistant might have geiger counter measurements 🤓