vitotronic

Home Assistant integration for Viessmann heating controllers over the Optolink port, with an ESP32 running stock ESPHome as the bridge. Catalog-driven, no hardcoded datapoints.

integration home-assistant heating hacs viessmann optolink vitotronic heat-pump esphome vitocal

Updated Sep 18, 2026
Python

tma / vcontrold-mqttd

Star

A Rust-based MQTT bridge for vcontrold

home-automation mqtt iot openv viessmann optolink vcontrold vitotronic

Updated Sep 16, 2026
Rust

schiermike / vitographer

Star

Script to pull data off vcontrold and push it into carbon-cache

grafana carbon viessmann vitodens vcontrold vitotronic

Updated Nov 30, 2017
Python

yoda-jm / vcontrold-go

Star

Read and control a Viessmann heating controller over Optolink (KW2 protocol) in Go, with MQTT and Home Assistant auto-discovery. Verified on a Vitotronic 200 KW2.

golang home-automation mqtt iot smart-home home-assistant heating boiler serial-communication viessmann optolink vcontrold vitotronic mqtt-discovery kw2

Updated Sep 1, 2026
Go

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