DROPLET V8.18 Seeeduino Xiao RFM Shield breakout board PCB

DROPLET V8.18 Seeeduino Xiao RFM Shield Breakout Board PCB

Easily build a fully functional LoRa IoT node with the DROPLET V8.18 Seeeduino Xiao RFM Shield Breakout Board. This plug-and-play interface PCB is perfect for learning and experimenting with LoRa technology, making setup effortless.

With pre-wired connections for the LoRa module, you can focus on your project without dealing with complex wiring. Simply add a Seeeduino Xiao and a HopeRF RFM95/92 LoRa module, and you’re ready to go!

Additionally, the PCB includes connectors for sensors and modules, offering maximum flexibility for various IoT applications. Designed for both hobbyists and professionals, this board supports popular LoRa libraries, ensuring seamless integration and a quick, hassle-free setup.
Specsheet PDF

Power supply of the Seeeduino Xiao RFM shield

• Use the Seeeduino Xiao’s USB connector as the primary power source.
• The Xiao automatically regulates the voltage down to 3.3V, ensuring safe operation for the RFM module.
• Additional power connections are available on the bottom of the PCB for sensors or other modules.

⚠ Important: The RFM module operates only on 3.3V. Applying higher voltage can permanently damage your LoRa module!

The DROPLET V8.18 PCB ensures all necessary connections between the Seeeduino Xiao and the RFM module are pre-wired for easy setup.

• MISO, MOSI, and SCK are mapped to their standard pins.
• The only changes needed in your sketch are for the DIO and NSS pins.

This streamlined design allows for quick integration, so you can start working on your LoRa IoT project with minimal effort.

Pin Mapping & LoRa Configuration

This board is tested with the following libraries:

https://github.com/mcci-catena/arduino-lmic

https://github.com/sandeepmistry/arduino-LoRa

• Update the pin mapping in your sketch to match the pin-out table above. (DIO0 is required; DIO1, DIO2, and Reset are optional.)
• If you’re using the LoRa LMIC library, make sure to provide the following credentials:
  • Network Session Key
  • Application Session Key
  • Device Address

This ensures seamless communication with your LoRa network and proper module functionality.

On the bottom side of the Seeeduino Xiao RFM Shield, there are optional extra solder pads for sensor wiring and other connections.