To run the show, [g3gg0] selected the ESP32-PICO-D4. You certainly don’t need such a powerful microcontroller to read the impulses from the SBM-20 tube and publish them via MQTT, but to be fair ...

based around the Espressif ESP32-WROVER-32 module and a generic touch screen, the neat little package is intended for custom IoT projects. However, we can use it for practically anything.