The board uses these values to calculate the power consumption and can send the data to Adafruit IO MQTT service via a Wi-Fi connection. It's important to note that working with high voltage circuits ...

Arduino sketch to read and decrypt data from my smart meter operated by Wiener Netze with an ESP32 or ESP8266. Sends energy data via MQTT (e.g. to Home Assistant). NodeJS project for reading OBIS data ...