Based on Charles Halard’s schematics I have created this very cheap french electrical counter monitor.
This project is a DIY open-source Teleinfo (TIC) decoder for French Linky electricity meters, powered by an ESP32. Unlike commercial Zigbee modules which are self-powered and forced to limit their data transmission frequency to avoid power crashes, this board is independently powered.
It reads the Linky TIC stream continuously in real-time and publishes the data instantly via MQTT to Home Assistant.
Everything is open source open hardware and costs around 10€
https://hackaday.io/project/206165-esp32-linky-teleinfo-to-mqtt-home-assistant
