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 ...
[Giovanni] built his energy meter to monitor energy usage in his whole home. An ESP32 serves as the heart ... particularly if you live somewhere without a smart meter or any other sort of ...