Adafruit Feather RP2040 RFM69 868/915 MHz
RP2040 Feather with integrated RFM69HCW 868/915 MHz packet radio transceiver, 8MB flash, LiPo charging, STEMMA QT, and uFL antenna connector for long-range wireless mesh networks.
$19.95
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Specifications
Certifications
Components
868/915 MHz FSK packet radio, SX1231-based, +20 dBm, AES-128, SPI interface.
Bus Interfaces
GPIO Map
Overview
The Adafruit Feather RP2040 RFM69 combines the dual-core RP2040 microcontroller with a built-in RFM69HCW 868/915 MHz packet radio transceiver, enabling long-range sub-GHz wireless communication without the power overhead of Wi-Fi. The RFM69HCW (based on the Semtech SX1231) supports FSK modulation, AES-128 hardware encryption, and output power up to +20 dBm (100 mW), providing a practical range of ~500 m line-of-sight with potential for several kilometers using directional antennas.
The RP2040 provides 264 KB SRAM and 8 MB of SPI flash, with a dual-core ARM Cortex-M0+ at 133 MHz. The radio is connected via SPI. A uFL connector and a through-hole pad for wire antennas give options for antenna selection. The LiPo battery charger (200 mA), USB Type-C, STEMMA QT I2C connector, 12 MHz crystal, status NeoPixel, and four mounting holes match the full Feather specification.
Compatible with CircuitPython, MicroPython, and Arduino (RadioHead or Adafruit RFM69 library). Well-suited for building sensor mesh networks, home automation nodes, and environmental monitoring systems that need a simple, low-power wireless protocol more flexible than Bluetooth LE but without Wi-Fi complexity.
Use Cases
4IoT
Internet of Things applications including connected sensors, actuators, and smart devices that communicate over WiFi, BLE, LoRa, or other wireless protocols.
Wireless Sensor Network
Sub-GHz, Zigbee, or LoRa-based wireless sensor networks for environmental monitoring and asset tracking.
home-automation
Prototyping
Rapid hardware prototyping and proof-of-concept development with breadboard-friendly form factors and accessible development environments.
Where to Buy
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