Building an ESP8266 DSMR5 reader for Home Assistant
For sending statistics about energy usage to my Home Assistant (HA) instance from my smart meter, a Sagemcom XS210 ESMR5 (DSMR5), I’ve been using a P1 cable and a Raspberry Pi Zero (RPi) running
ser2net following a blog post by Jean-Paul van Ravensberg. However, the idea of using both a P1 connector cable RJ11 (4-pin) and a RPi Zero seemed somewhat overkill as I had to make a wall mount for it, use an extra power outlet to power the RPi and the RPi is running a full OS for just reading and submitting serial data. Time to move to an ESP8266 solution!