OpenTherm Gateway

From NURDspace
OpenTherm Gateway
Opentherm spacegateway.jpg
Owner The_Niz
Status Infra
Location Kitchen wall
Tool Yes
Tool category General

OpenTherm Gateway

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What

OpenTherm gateway has been put between the heater and the thermostat. This way we are able to read the OpenTherm communication between them, and control the heater using the gateway. It is a board with a PIC controller that already came pre-flashed. It can be used with a FTDI cable or you can put an ESP8266 based NodeMCU board on it and communicate with that over Wifi. We first went for the ESP8266. The ESP8266 ran Espeasy with Ser2Net. We later changed it with USR-TCP232-T2.

Wiring

Boiler: Remeha Calenta (http://www.archiproducts.com/en/products/revis/wall-mounted-condensation-boiler-remeha-calenta-25l_225443)

Integration with home assistant

We do not use py-otgw-mqtt on Jarvis anymore but are using native OpenTherm support in Home Assistant.

  • IP: 10.208.42.215
  • Port: 20108

Links