Code is WIP!!!

Please see the Wiki for more information

Hardware setup

Wire the DHT22

10kOhm Resistor from VCC to DATA DATA Pin to Pin D4 on a NodeMCU board

   _ _ __ _ _
  |          |
  |  DHT 22  |
  |          |
  ||--|--|--||

VCC DATA NC GND

Flash the code to the sensors

Choose the correct board in platform.ini. Examples are "nodemcu" or "d1_mini". Edit the settings in src/config.h (example in src/config.h.example). Each sensor has to have a distinguished name which has to match in the Grafana .json). Flash the code to the board with the "PlatformIO: Upload" button in the gui or do it via cli with:

platformio run -t upload

Code setup

Create and edit your configuration

Clone this repo to /etc/docker/compose/sensor-network
cd /etc/docker/compose/sensor-network
cp .env.example .env
Edit .end to fit your needs

Ports to open if you use a firewall

3000 (Grafana - show graphs) HTTP
1883 (Mosquitto - incoming data) MQTT

Configure Grafana

Add data source in Grafana (after logging in with the credentials in .env)

Name: DS_SENSORS (has to match the .jason datasource) Type: InfluxDB URL: http://influxdb:8086 Access: proxy Database: same as INFLUX_DABA in .env User: same as INFLUX_USER in .env Password: same as INFLUX_PASS in .env

Tips and Tricks

Systemd

Based on https://gist.github.com/mosquito/b23e1c1e5723a7fd9e6568e5cf91180f

ln -s examples/docker-compose.service /etc/systemd/system/docker-compose@.service
systemctl daemon-reload
systemctl enable docker-compose@sensor-network
systemctl start docker-compose@sensor-network

fujexo/sensor-network