Get temperature, humidity values from https://www.weatherlink.com/ (Weatherlink) and send it to your MQTT broker
I did not find anything so I had to build it with python.
You simply need Python3 (never tested with Python2.7) and the only dependencies are requests (to access the api) and paho-mqtt (for MQTT broker interaction) so this line should be enough :
pip3 install paho-mqtt requestsYou're on your own here, the documentation is strange.
Easy, first try a dry-run command :
./weatherlink2mqtt.py -a '<API_KEY>' -n -vand then a real command to add to your crontab :
./weatherlink2mqtt.py -c '<CITY_ID>' -a '<API_KEY>'The secrets can also be set with environment variables, see the help for more detail.
/ # weatherlink2mqtt.py --help
usage: weatherlink2mqtt.py [-h] -a WLAPIKEY [-m HOST] [-n]
[-o PREVIOUSFILENAME] [-t TOPIC] [-T TOPIC] [-v]
Read current temperature and humidity from Weatherlink and send them to a MQTT
broker.
optional arguments:
-h, --help show this help message and exit
-a WLAPIKEY, --wl-api-key WLAPIKEY
Weatherlink API Key. (default: None)
-m HOST, --mqtt-host HOST
Specify the MQTT host to connect to. (default:
127.0.0.1)
-n, --dry-run No data will be sent to the MQTT broker. (default:
False)
-o PREVIOUSFILENAME, --last-time PREVIOUSFILENAME
The file where the last timestamp coming from
Weatherlink API will be saved (default: /tmp/wl_last)
-t TOPIC, --topic TOPIC
The MQTT topic on which to publish the message (if it
was a success). (default: sensor/outdoor)
-T TOPIC, --topic-error TOPIC
The MQTT topic on which to publish the message (if it
wasn't a success). (default: error/sensor/outdoor)
-v, --verbose Enable debug messages. (default: False)I personaly use cron to start this program so as I want to keep the latest timestamp received from the API, I store it by default in /tmp/wl_last (you can change it through a command line parameter).
I added a sample Dockerfile, I personaly use it with a docker-compose.yml like this one :
version: '3'
services:
weatherlink:
build: https://github.com/seblucas/weatherlink2mqtt.git
image: weatherlink2mqtt-python3-cron:latest
restart: always
environment:
WEATHERLINK_API_KEY: YOUR_API_KEY
CRON_STRINGS: "09 * * * * weatherlink2mqtt.py -m localhost -v"
CRON_LOG_LEVEL: 8None, I hope at least ;).
This program is licenced with GNU GENERAL PUBLIC LICENSE version 3 by Free Software Foundation, Inc.