SparkFun Pro RF - LoRa, 915MHz (SAMD21)

The SparkFun Pro RF is a LoRa®-enabled wireless board that marries a SAMD21 and a long-range RFM95W to make a compact and easy-to-use IoT Arduino board. With its fast MCU and excellent point to point data transmission in the 915MHz ISM band with LoRa Capabilities, the Pro RF is a great choice for anyone interested or experienced in utilizing long range data communication.

Every pin on the SparkFun Pro RF is accompanied with a ground connection making the buttons and LEDs easy to connect. In case you're building something to be embedded into clothing or other physically harsh environment the antenna includes a stress relief hole to make sure your wire antenna survives. A short (3 inch) wire antenna is sufficient for "short" distances (up to 1 mile line-of-sight), but we've also included a u.FL antennae connector for potentially longer distances.

The Pro RF also includes a power switch and 2-pin JST connector for powering from a lithium battery. With a Micro-B USB and the power switch in the off position, the Pro RF will charge the attached battery! The board programs over a reinforced Micro-B connector with a slim reset button that fits nicely on the side of the board. We�ve even added our popular Qwiic connector to the edge of the board making it incredibly easy to add sensors and actuators without the need for solder or a soldering iron!

Thanks to the Arduino LoRa library, the RFM95W radio is an easy to use packet radio. But it doesn�t stop there because closing a few jumpers on the underside of the SAMD21 Pro RF initiates LoRaWAN mode on the radio module making it a node in a distributed sensor network.

Features:

• SAMD21G18A
  • Cortex M0+
  • 256KB Flash Memory
  • 32MHz External Oscillator
  • 4 Digital and 5 Analog IO Pins with exclusive GND pins
• Hope RFM95W LoRa modem
  • Point to Point Radio capabilities
  • LoRa Enabled
  • Frequency range: 915 MHz
  • Spread factor: 6-12
  • Range up to 1 mile line of sight
  • U.FL Antenna
• LiPo Battery Charger
  • 500mA Charge Rate
• Qwiic Enabled
• Power LED disconnect jumper for low power applications.
• PTH pins for software debug (SWD)

Documents:

• Schematic
• Eagle Files
• Hookup Guide
• The Things Network
• Graphical Datasheet
• Datasheets
  • RFM95W
  • MCP73831
  • SAMD21G
• GitHub Hardware Repo

Videos

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