IoT Garden Monitor

Simple, local IoT system for monitoring a home garden.

Description

A pre-configured IoT stack for garden montioring. Includes two Heltec LoRa 32 edge micro-controllers serving as the Garden Node and the IoT Gateway. The backend system is dockerized and continuously ingests metrics from the edge microcontrollers via MQTT, processes it through a Node-RED gateway, stores the data in a InfluxDB, and provisions a Grafana dashboard.

Garden Node and Gateway

Hardware

• Heltec ESP32 (WiFi/LoRa 32 series)
• Waterproof Capacitive Soil Moisture Sensors (x2)
• Solar Panel & Li-Ion Battery

Software

• Arduino IDE

External Circuits

• Here is the datasheet for the Heltec LoRa 32.
• Used a voltage divider to limit maximum threshold for the PV panel
• Integrated the

Installation

1. Clone the repo:

   git clone https://github.com/yourusername/GardenMonitor.git
   cd GardenMonitor/

2. Open Arduino IDE and connect the microcontroller which will serve as the edge node.
3. Follow the instructions here to install the required packages:
   • Heltec Unofficial
   • PubSubClient
4. Open ./garden-node/garden_node/garden_node.ino
   • Flash the file onto the first board and connect external circuits.
5. Open ./gateway-node/gatway_node/gateway_node.ino
   • Update the Wi-Fi SSID, Password, and MQTT Broker IP in your sketch.
   • Flash the file onto the second board.

Backend

Software

• Docker and Docker Compose

Installation

1. Launch the MQTT Broker, Node-RED, InfluxDB, and Grafana in the background.

cd backend
docker compose up -d

2. Navigate to http://localhost:3000

Authors

Erich Choudhury

Version History

• 0.1
  • Initial Release

Acknowledgments

Inspiration, code snippets, etc.

• awesome-readme