This is a reference design for automatic watering systems for large fields of plants and crops. It uses a combination of a moisture sensor + bistatic water valve per plant, controlled by a Bluetooth® (BT) mesh network and powered by energy harvesting. The communications system consists of BT low power nodes, BT mesh routers and an optional edge router for IoT connectivity.

System Benefits​:

  • No wiring
  • No complex routing setup
  • Option for remote visualization/control via IoT connection to LTE-M

Target Applications:

  • Automatic, adaptive watering for large plots of plants or crops with an option for central control or visualization
Automatic Plant Watering System Diagram