| OpenTherm Gateway | |
|---|---|
 | |
| Owner | The_Niz |
| Status | Infra |
| Location | Kitchen wall |
| Tool | Yes |
| Tool category | General |
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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)
Original wiring
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