Garden133

Garden133 is a solar and battery-powered device for monitoring garden soil moisture levels. It reads the moisture level of soil using a capacitive moisture sensor and transmits data via LoRa.

Please see the Introducing Garden133 blog post for a project overview.

Features

• Soil Moisture Sensing: Capacitive sensor measurement.
• Device Environmental Monitoring: SHTC3 sensor for air temperature and humidity inside the device enclosure.
• Power Management: Solar charging and battery voltage monitoring.
• LoRa Communication: Connects to a base station (LoRa133) to integrate with Home Assistant.
• OTA Updates: Supports wireless firmware updates.

Hardware

This project includes the custom hardware design and 3D printable parts.

• PCB Design: KiCAD files are available in KiCAD/Garden133/.
• Enclosure: OpenSCAD files for the waterproof enclosure and mounts are in OpenSCAD/.

Firmware Dependencies

This firmware uses the PlatformIO build system and depends on the following libraries:

• og3: Base C++ library for ESP32/Arduino.
• og3x-lora: LoRa module support.
• og3x-satellite: Satellite architecture support.

Getting Started

Prerequisites

• PlatformIO Core or VSCode with PlatformIO extension.
• An ESP32-based Garden133 board.

Configuration

The project uses INI files for local configuration (secrets, paths, etc.) which are excluded from git.

1. Setup Secrets: Copy the example secrets file to create your local configuration:

   cp secrets.ini.example secrets.ini

   Edit secrets.ini to set your environment preferences:

   • udpLogTarget: IP address for UDP logging.
   • otaPassword: Password for Over-The-Air updates.
   • uploadProtocol: esptool (USB) or espota (WiFi).
   • uploadPort: Serial port (e.g., /dev/ttyUSB0) or IP address.

2. USB vs WiFi: You can also use secrets-usb.ini.example as a template for USB-connected development:

   cp secrets-usb.ini.example secrets.ini

Building & Flashing

1. Build the firmware:

   pio run

2. Upload the firmware:

   pio run --target upload

3. Upload Filesystem (LittleFS): This uploads the data/ directory containing web resources.

   pio run --target uploadfs

License

This project is licensed under the MIT License. See LICENSE for details.