nefit-easy-mqtt-bridge

Bridge metrics from nefit/buderus/bosch backend to a mqtt topic

Usage

• install dependencies using npm install or build a docker image using the provided Dockerfile
• set the correct environment variables (see below)
• run node app.js

Configuration

The app is configured using multiple environment variables:

NEFIT_SERIAL_NUMBER 
NEFIT_ACCESS_KEY
NEFIT_PASSWORD
MQTT_URL
MQTT_USERNAME
MQTT_PASSWORD
POLL_DELAY (in ms, defaults to 300000 -> 5 minutes)
PUBLISH_TO_SEPERATE_TOPICS (boolean, defaults to false)

Topics

The bridge posts a JSON message to the topic /nefit/${serialnumber} with following keys

• 'setpoint'
• 'inhouse'
• 'outdoorTemp'
• 'overrideSetpoint'
• 'manualSetpoint'
• 'hotwaterActive'
• 'serial'
• 'pressure'
• 'supplyTemperature'

example

{
  "setpoint": 21.5,
  "inhouse": 21.7,
  "outdoorTemp": 7,
  "overrideSetpoint": 21.5,
  "manualSetpoint": 15,
  "hotWaterActive": 1,
  "serial": "1234567",
  "pressure": 25.5,
  "supplyTemperature": 47.3
}

Commands

The bridge subscribes to the following topics

• /nefit/${serialnumber}/command/settemperature For valid values see https://www.npmjs.com/package/nefit-easy-commands#set-temperature
• /nefit/${serialnumber}/command/setmode ['manual', 'clock']
• /nefit/${serialnumber}/command/sethotwatersupply ['on', 'off']

TODO

• Make the topic configurable