kaunderi / Vallox-communicator

Main function of this project is to be able to monitor and control Vallox ventilation unit with RS485 serial communication using Python.

Vallox-communicator

Vallox-communicator is a library to monitor and control Vallox ventilation unit with RS485 serial connection. MQTT is used to publish/receive information to/from Home Assistant with MQTT integration.

Built on top of https://github.com/au-ee/read_vallox

Supported features

• Monitor default sensor values (No humidity/CO2)
  • Inside-, outside-, exhaust- and intake temperature
  • Fanspeed
• Control the fanspeed

TODO

• Monitor all possible values
• Control all possible things

Installation

Use the package manager pip to install needed packages

pip install -r requirements.txt

Usage

Change correct serial device to Serial_config.py

SERIAL_PORT = "/dev/ttyS0"

Input correct MQTT broker setting to MQTT_config.py

ip_address = "IP_ADDRESS_OF_BROKER"
topic = "homeassistant/sensor/vallox"
username = "MQTT_USERNAME"
password = "MQTT_PASSWORD"

Home Assistant control

Example on how to send command to the communicator from Home Assistant

input_select:
  valloxfanspeed:
    name: Ventilation Fan Speed
    options:
      - "1"
      - "2"
      - "3"
      - "4"
      - "5"
      - "6"
      - "7"
      - "8"
    initial: "2"
    icon: mdi:tune

automation:
  - alias: "Change Ventilation Fan Speed"
    trigger:
      platform: state
      entity_id: input_select.valloxfanspeed
    action:
      - call-service
      - service: mqtt.publish
      - data:
          payload_template: "{{ states.input_select.valloxfanspeed }}"
          topic: homeassistant/sensor/vallox/control

Simple card for Lovelace UI

type: entities
entities:
  - input_select.valloxfanspeed