Code is WIP!!!

Please see the Wiki for more information

Hardware setup

Wire the DHT22

10kOhm Resistor between DHT 22 VCC and DHT 22 DATA
DHT 22 DATA pin to D4 on a NodeMCU or D1 mini board
DHT 22 VCC pin to 3.3V pin
DHT 22 GND to some ground pin

   _ _ __ _ _
  |          |
  |  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

oxivanisher/sensor-network