Core2weatherStation

The goal of this project is to fetch data with MQTT from two M5Stack Core2 that are equiped with a ENV3 Sensor and send the data to an InfluxDB to then display the measured data on a grafana dashboard.

Diagramm

Installation

Clone repository
Open repository with PlatformIO
Adjust settings in src/config.cpp
- clientId
- m5stack_primary
- m5stack_secondary
- second_station_label
Adjust serial port in platform.ini
Build and upload
Setup an Influx Cloud Account (https://cloud2.influxdata.com/signup)
Create a new Organization (e.g Core2WeatherStation)
Create a new bucket (e.g getting-started)
Setup Telegraf config
- set bucket to getting-started
- set Organization to Core2WeatherStation
- set server to your MQTT broker. (e.g mqtt://cloud.tbz.ch:1883)
- set your topics. (e.g WeatherStation_Main/temp, WeatherStation_Main/hum)
Export your INFLUX_TOKEN on your terminal. (export INFLUX_TOKEN=<INFLUX_TOKEN>)
Start the telegraf agent on your terminal (telegraf --config <your_url>)
Setup a grafana account(https://grafana.com/auth/sign-in/?plcmt=top-nav&cta=myaccount)
Create a new InfluxDB data source
Set the neccesary configuration to connect to your influx DB (url, token, default_bucket)
Create a new dashboard and add visualization.
Use the following Queries to visualize the data

Temperature

from(bucket: "getting-started")
  |> range(start: v.timeRangeStart, stop: v.timeRangeStop)
  |> filter(fn: (r) => r["topic"] == "WeatherStation_Main/hum")

Humidity

from(bucket: "getting-started")
  |> range(start: v.timeRangeStart, stop: v.timeRangeStop)
  |> filter(fn: (r) => r["topic"] == "WeatherStation_Main/temp")

Average

from(bucket: "getting-started")
  |> range(start: v.timeRangeStart, stop: v.timeRangeStop)
  |> mean()

License

This work is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License and GNU GENERAL PUBLIC LICENSE version 3. If there are any contradictions between the two licenses, the Attribution-NonCommercial-ShareAlike 4.0 International license governs.

Laureatus/Core2weatherStation