RN2483A LoRaWAN Evaluation Board (USB-C + UART Breakout)

This project is a compact and flexible evaluation and development board for the Microchip RN2483A LoRaWAN module, designed to make it easy to prototype, test, and integrate LoRaWAN connectivity into embedded projects.

The board is centered around the RN2483A-I/RM105, a pre-certified LoRaWAN Class A module, which significantly reduces regulatory complexity and speeds up product development. Because the RF module itself is already certified, users can focus on firmware and system integration instead of RF design and compliance.

Key Features

Microchip RN2483A-I/RM105 LoRaWAN Module

• LoRaWAN™ Class A compliant
• Pre-certified radio module (simplifies CE/FCC compliance)
• Low power operation for battery-powered IoT devices
• AT command interface over UART
• Range of up to 15Km

Dual Communication Interfaces

• USB-C connector with onboard FT234XD USB-to-UART bridge for direct connection to a PC (no external adapter needed)
• External UART header / edge connector for direct connection to microcontrollers (3.3 V logic level)

Power Options

• Powered from USB-C (5 V input) or 3V3 directly to the module
• On-board high-efficiency 3.3 V LDO regulator for the RN2483A and logic
• Integrated power path and filtering for clean RF operation

RF Connectivity

• Two SMA connectors for antenna connection:
• 433 MHz SMA output
• 868 MHz SMA output
• Allows easy testing across different regional LoRa bands

On-Board Debug & Control

• Reset and user buttons
• Status LEDs
• Test points for debugging
• ICSP header for programming/debugging

UART Multiplexing

• On-board analog multiplexer allows selecting between USB-UART and external UART via jumper
• Makes it easy to switch between PC control and embedded host control

Compact and Mountable

• Small form factor with M2 mounting holes
• Suitable for benchtop testing or integration into enclosures

Typical Use Cases

• Learning and experimenting with LoRaWAN
• Rapid prototyping of IoT sensor nodes
• Testing LoRaWAN connectivity and network coverage
• Developing gateways, sensors, or industrial telemetry systems
• Educational and research projects

Getting Started

1. Plug the board into your PC via USB-C.
2. A virtual COM port will appear (FT234XD).
3. Use a serial terminal to send AT commands to the RN2483A.
4. Alternatively, connect your MCU via the UART header and control the module directly.