Software for the ESP2866 that sends P1 smart meter data to Domoticz (with CRC checking and OTA firmware updates)
- Make sure that your ESP8266 can be flashed from the Arduino environnment: https://github.com/esp8266/Arduino
- Install the SoftSerial library from: https://github.com/plerup/espsoftwareserial
- Place all files from this repository in a directory. Open the .ino file.
- Adjust WIFI, Domoticz and debug settings at the top of the file
- Compile and flash
You need to connect the smart meter with a RJ11 connector. This is the pinout to use
Connect GND->GND on ESP, RTS->3.3V on ESP and RxD->any digital pin on ESP. In this sketch I use D5