[!NOTE]
AI & LLM Assistants: Please read README_for_AI.md for critical repository context, API rules, and project guidelines before generating code or modifying files.

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ArduLora Board — The Ultimate LoRa & LoRaWAN Development Platform

ArduLora is a compact, ultra-low-power, Arduino-compatible development board specifically optimized for long-range LoRa and LoRaWAN communication.

Powered by the robust RAK3172 module (STM32WLE5CC core) and running the official RUI3 (v4.2.4+) framework, ArduLora is the perfect solution for engineering smart agriculture nodes, industrial IoT telemetry, remote monitoring stations, and low-power sensor nodes.

✨ Key Features & Advantages

📡 Premium LoRa/LoRaWAN Radio: Supports long-range Peer-to-Peer (P2P) radio and full LoRaWAN Class A, B, and C standard protocols for global deployments.
🔌 Industrial RS485 Port: Onboard RS485 transceiver supports hardware Modbus RTU (Master/Slave) to easily poll industrial-grade PLC networks and sensors.
⚡ Advanced Power Management:
- Onboard high-efficiency DC-DC buck converter supporting wide input voltages (5V to 24V DC).
- Ultra-low deep sleep current consumption for extended battery runtime.
- Dedicated GPIO-controlled power gate pin (PB5) to completely shut down external sensors/transceivers during sleep.
🌡️ Integrated Sensor Interfaces:
- Dual high-voltage Analog Inputs (PA10/AI1 and PA15/AI2) with voltage scaling (0-10V input ready).
- Hardware I2C port (PA11/SDA, PA12/SCL) with onboard pull-up resistors.
🗺️ GPS Support: Plug-and-play compatibility with external ATGM336H GPS modules.
🧑‍💻 Modern Programming Ecosystem: Code natively inside the Arduino IDE using standard Arduino functions combined with RAKwireless Unified Interface V3 (RUI3) APIs.

📊 Hardware Specifications

Parameter	Specifications
Core Module	RAKwireless RAK3172 (STM32WLE5CC @ 32 MHz)
LoRa Protocol	LoRaWAN v1.0.3 (Class A, B, C) and LoRa P2P
Frequency Bands	EU868, US915, AS923, AU915, KR920, IN865, etc.
Input Voltage	5V – 24V DC via power terminal, or 5V USB-C
Sensor Power Control	Pin `PB5` (Active LOW to supply VCC power)
Analog Input Channels	2x Analog Inputs (0-10V measurement range)
Digital Output LEDs	3x Onboard programmable LEDs (Yellow `PA8`, Red `PA9`, Blue `PB2`)
Communication Ports	1x RS485 (Modbus RTU), 1x I2C, 1x Serial UART

🗺️ Board Information & Layout

Version Hardware Revisions

🏷️ Rev 1.0 [July-2025] Layout:

🏷️ Rev 1.1 [Sept-2025] Layout:

📖 Quick Start & Documentation Portal

Get up and running quickly by browsing our detailed guides:

🚀 Software Setup Guide: Steps to install the Arduino IDE BSP, add RAK3172 module support, configure COM ports, and flash your first test code.
🧑‍💻 Programming & Examples Guide: Comprehensive examples containing code snippets, flowchart diagrams, and explanations for:
- Digital I/O & Blinking LED
- Analog Input Readings
- Modbus Master/Slave (RS485)
- I2C Bus Scanner & Sensor Reading (SHT3x, BH1750)
- LoRa P2P Sender & Receiver
- MCU System Deep Sleep, Time, and Timer tasks
- GPS ATGM336H Integration
📡 LoRaWAN Configuration Guide: Walkthrough on joining LoRaWAN networks using OTAA and ABP modes.
⚙️ Hardware Schematics & Pinout: Schematic diagrams and detailed pinout maps.
🔗 RFM95 / SX1278 (Ra-02) Interfacing: Guide on communicating between ArduLora and standard ESP32/Arduino LoRa modules.
🤖 LLM/AI Assistant Reference: Documentation context and API namespaces for developers utilizing AI coding assistants.