The Geiger Counter as announced in Make Magazin (Germany) 3/22 (Page 8) is a great pice of work. Our Geiger Counter runs non-stop for more than one year now with ESP8266 (D1 Mini Board), running ESPhome under Home Assistant.
Original Project from Make Magazine: https://github.com/MakeMagazinDE/Geigerzaehler
Our documentation: https://wiki.mint-labs.de/books/infrastruktur/page/geiger-zahler
The author remixed this model.
Made the Box smaller for USB-Use only (without Battery Part), created a lit with our Name (one for use with and one without LCD).