The SparkFun Pro RF combines a SAMD21 microcontroller with an RFM95W LoRa radio module for long-range wireless communication in the 915 MHz ISM band. It's a compact, Arduino-compatible board designed for IoT applications, remote sensing, and point-to-point data transmission over distances of up to a mile or more.

The board includes a u.FL antenna connector for external antennas, a 2-pin JST connector for lithium battery power with built-in charging via Micro-USB, a power switch, and a Qwiic connector for easy I2C sensor integration without soldering. LoRaWAN mode can be enabled by closing jumpers on the underside of the board.

Key Features

• SAMD21 + RFM95W – Arduino-compatible MCU with LoRa radio on one board
• 915 MHz LoRa – Long-range wireless communication (Australian ISM band)
• LoRaWAN Support – Enable via solder jumpers for distributed sensor networks
• u.FL Antenna Connector – For external antennas and extended range
• LiPo Charging – 2-pin JST connector with USB charging and power switch
• Qwiic Connector – Solderless I2C sensor and actuator integration
• Stress Relief Hole – Protects wire antenna in physically demanding environments
• Ground-Paired Pins – Every pin has an adjacent ground connection

Specifications

• Microcontroller – SAMD21 (Arm Cortex-M0+)
• Radio – RFM95W (915 MHz LoRa)
• Interface – Micro-USB for programming and charging
• Power – USB or 3.7V LiPo battery (JST connector)
• Antenna – Wire antenna included; u.FL connector for external antenna

Ideal For

• Long-range IoT sensor networks
• Remote environmental monitoring
• LoRa and LoRaWAN prototyping
• Battery-powered wireless nodes

Package Contents

• 1× SparkFun Pro RF (LoRa, 915 MHz, SAMD21)

Resources

• SAMD21 Pro RF Hookup Guide