The weather station microservice for the R nineT Scrambler navigation tower collects environment data from the BME280 sensor and publishes it to the following MQTT topics:
weather/temperature- ambient temperature in Celsiusweather/pressure- atmospheric pressure in hectoPascals (hPa), also called millibarsweather/humidity- relative humidity
To run the service on system startup, the PM2 process manager for Node.JS applications is used. It provides process monitoring capabilities which are great for this application. To start the service run:
pm2 start app.js --name weather --watch --time