Next step after using S-Soil MTEC-02B sensor in Milestone 2: Outdoor single sensor and saving telemetry data via Fledge software framework we are going to setup a framework where developers can add new sensors from scratch and build a new software stack to provide secure, private, zero-touch deployments to a subset of Edge Nodes (IoT devices).
RPi4 board will be used as Edge Node.
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- Raspberry Pi4 model B 4GB+ RAM
- Industrial Soil Moisture & Temperature & EC Sensor MODBUS-RTU RS485 (S-Soil MTEC-02B)
- 16+ GB micro SD Card
- Power supply for Raspberry Pi 4
- SD card reader
- x64 (development workstation)
- USB to RS485 converter (or similar like USB-RS485-WE-1800-BT)
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- Clone SmartAg-foundation repo. And change directory to tools.
- Build BSP image, write to SD card. Insert 16GB+ SD card in drive and run Edge Node
sudo ./write_bsp_image example-edge-node
- Run Edge Server
./start_local_edgeserver
- Solder sensor and USB converter (described in p.6 from Milestone 2: Outdoor single sensor)
- Create new example stack. By default new stack will contain a workable solution with telegraf and exec plugin for S-Soil MTEC-02B.
./create_stack ssoil-mtec-02b-single
- Insert sensor to USB port of Edge Node
- Build stack to get retrieve data (Total Dissolved Solids (TDS), Temperature, Volumetric Water Content (VWC)) from S-Soil MTEC-02B, deploy
./build_and_deploy ssoil-mtec-02b-single example-edge-node
- Open Grafana from Edge Server http://localhost:3000/, login, explore and display telemetry data
Once InfluxDB data source needs to be configured as below:
URL - http://influxdb:8086
Database - telegraf
User - user
Password - password
And press "Save and Test"
- Open Explore tab (http://localhost:3000/explore)
You should see new measurement mtec-02b-sensor and fields for it (tds, temperature, vwc)
- (Optional) Extend service with new logic to read soil salinity (it's covered in hands on demo video at the beginning).
Deploy and view new data on a dashboard (salinity should be available)
Check how to do it in this part of video https://youtu.be/mCqbzVYJyVs?t=1306