README

Simple solution for getting weather info from BME280 sensor, connected to Arduino Nano RP2040 Connect, pushing it to a MQTT broker (RabbitMQ MQTT) and getting that data to InfluxDB via Telegraf subscribing to MQTT.

Overview

Setup

docker run -d --hostname rabbithost --name rabbit-name rabbitmq:3
docker run -d --hostname rabbit-chg --name rabbit-mgmt -p 8080:15672 -p 1883:1883  rabbit-management-chg:latest
docker run -d --name=influxdb -p 8086:8086 -v  /tmp/testdata/influx:/root/.influxdb2 influxdb:2.0
docker run -d -v $PWD/telegraf.conf:/etc/telegraf/telegraf.conf:ro telegraf
docker run -d -p 3000:3000 grafana/grafana-enterprise

You need a InfluxDB API token, here is a description how to get one.

Sample Flex query you can use in Grafana.

from(bucket: "pico")
  |> range(start: v.timeRangeStart, stop: v.timeRangeStop)
  |> filter(fn: (r) => r["_measurement"] == "weather")
  |> filter(fn: (r) => r["_field"] == "temp")
  |> aggregateWindow(every: v.windowPeriod, fn: mean, createEmpty: false)
  |> yield(name: "mean")

To Do

• Move docker configuration to docker compose
• Add Arduino wiring sketch
• Connect Grafana to InfluxDB
• Refactor weather_sensor code
  • Use a JSON object instead of string