This package listens for local data from Ambient Weather stations (such as the WS-2902C) and converts the incoming data to MQTT events. The sensor data is published with auto-discovery so they show up automatically as sensors in Home Assistant.

The following Ambient Weather station models are confirmed to work:

• WS-2902C

The package is provided as a Docker image for ease of installation. The sampleConfiguration folder contains the two files necessary for setup.

1. Copy the sampleConfiguration/.env and sampleConfiguration/docker-compose.yml file to your local machine.
2. Edit the .env file and specify the required information. At a minimum you must provide the address of your MQTT server, your Ambient Weather station's MAC address, and the timezone your station is located in. The sample .env contains comments explaining the additional options available including username and password for connecting to the MQTT server.
3. Start up the service by running docker compose up in the same folder as two downloaded configuration files.

If the server starts up successfully you will see log messages like this:

2021-06-30T05:59:56-07:00 [Main] Starting up
2021-06-30T05:59:56-07:00 [MQTT] Connected to MQTT server https://192.168.1.172:1883
2021-06-30T05:59:56-07:00 [Web server] Listening at https://localhost:8080

Your Ambient Weather station must be configured to send data to the local service. This configuration is done through the awnet app, and currently can only be configured using the app on iOS devices (the setting is not available in the Android app).

1. Run the awnet app and connect to your weather station.
2. Tap next through the configuration screens until you get to the Customized screen.
3. Set the fields to the values in the following table.
4. Tap Save.

Here is what a properly configured weather station looks like:

To verify everything works connect to your Home Assistant server and go to Configuration > Devices and search for ambientweather2mqtt. You should see a list of all the sensors with current values reported.

If you see the list of sensors but they all report Unavailable for the value it means the data from the weather station is not being received by this system. Check the following:

1. The Server IP / Hostname value was set to the correct IP address for the Docker system.
2. The Port value was set to the same value specified in .env.
3. The Path value was set to /data/? with the question mark at the end. If the question mark is missing the system will not work.
4. Your firewall rules aren't blocking communication from your weather station to your Docker server. This can happen if you run virtual LANs to segment NoT/IoT traffic from your primarily LAN.

The following sensors are supported. Note that weather stations will only report the subset of these they support.

| Name | Description | Ambient Weather | Weather Underground | Unit | | ----------------------------- | -------------------------------------------------------------- | --------------- | ------------------- | ------- | --- | ------------- | ----------------------------- | --- | --- | ------- | | barometricPressureAbsolute | Absolute barometric pressure | Yes | Yes | inHg | | barometricPressureRelative | Relative barometric pressure | Yes | Yes | inHg | | battery1..10 | State of battery, 0 for not ok, 100 for ok | Yes | No | percent | | batteryCo2Ok | State of the CO2 device battery, 0 for not ok, 100 for ok | Yes | No | percent | | batteryOk | State of the device battery, 0 for not ok, 100 for ok | Yes | No | percent | | batteryPM25Ok | State of the PM25 device battery, 0 for not ok, 100 for ok | Yes | No | percent | | co2 | CO2 meter reading | Yes | No | ppm | | dewpoint | Outdoor dewpoint temperature | No | Yes | °F | | eventDate | Date of the latest measurements | Yes | Yes | date | | humidity1..10 | Humidity sensors 1 through 10 | Yes | No | percent | | humidityIndoor | Indoor humidity | Yes | Yes | percent | | humidityOutdoor | Outdoor humidity | Yes | Yes | percent | | pm25 | PM2.5 air quality | Yes | No | µg/m^3 | | pm25_24Hour | PM2.5 air quality 24 hour average | Yes | No | µg/m^3 | | pm25Indoor | PM2.5 indoor air quality | Yes | No | µg/m^3 | | pm25Indoor_24Hour | PM2.5 indoor air quality 24 hour average | Yes | No | µg/m^3 | | rain24Hour | 24 hour rain | Yes | No | inches | | rainDaily | Daily rain | Yes | Yes | inches | | rainEvent | Event rain | Yes | No | inches | | rainHourly | Hourly rain | Yes | Yes | inches | | rainMonthly | Monthly rain | Yes | Yes | inches | | rainTotal | Total rain since last factory reset | Yes | No | inches | | rainWeekly | Weekly rain | Yes | Yes | inches | | relay1..10 | Relays 1 through 10 | Yes | No | n/a | | soilHumidity1..10 | Soil humidity sensors 1 through 10 | Yes | No | percent | | soilTemperature1..10 | Soil temperature sensors 1 through 10 | Yes | No | °F | | solarRadiation | Solar radiation | Yes | Yes | W/m^2 | | temperature1..10 | Temperature sensors 1 through 10 | Yes | No | °F | | temperatureIndoor | Indoor temperature | Yes | Yes | °F | | temperatureOutdoor | Outdoor temperature | Yes | Yes | °F | | uv | UV radiation index | Yes | Yes | integer | | windchill | Outdoor windchill temperature | No | Yes | °F | | windDirection | Instantaneous wind direction | Yes | Yes | degree | | windDirectionTenMinuteAverage | Wind direction ten minute average | Yes | No | degree | | windDirectionTwoMinuteAverage | Wind direction two minute average | Yes | No | degree | | windGust | Maximum wind speed in the last 10 minutes | Yes | Yes | mph | | windMaxDailyGust | Maximum wind speed in last day | Yes | No | mph | | windSpeed | Instantaneous wind speed | Yes | Yes | mph | | windSpeedTenMinuteAverage | Wind speed ten minute average | Yes | No | mph | | windSpeedTwoMinuteAverage | Wind speed two minute average | Yes | No | mph |

Ambient Weather