Adafruit
Adafruit RFM69HCW Transceiver Radio Breakout - 433 MHz
The Adafruit RFM69HCW Transceiver Radio Breakout @ 433 MHz is a breadboard-friendly packet radio module for adding long-range wireless communication to Ardui...
The Adafruit RFM69HCW Transceiver Radio Breakout @ 433 MHz is a breadboard-friendly packet radio module for adding long-range wireless communication to Arduino and other microcontroller projects. Based on the SX1231 transceiver, it provides FSK packet radio with AES-128 encryption, auto-retransmit, and multipoint networking at 433 MHz.
The breakout includes a 3.3 V regulator and level shifter, so it works with both 3 V and 5 V logic. With +13 to +20 dBm transmit power (up to 100 mW), it can reach approximately 500 m line of sight with a simple wire antenna — up to 5 km with directional antennas and optimised settings.
Key Features
- SX1231 FSK Packet Radio – RFM69HCW at 433 MHz with SPI interface
- +13 to +20 dBm Transmit Power – Up to 100 mW, selectable in software
- ~500 m Range – Line of sight with wire antenna; up to 5 km with directional antennas
- AES-128 Encryption – Built-in hardware encryption engine
- Auto-Retransmit – Automatic packet retransmission for reliability
- Multipoint Networking – Individual node addresses for creating networks
- 3.3 V Regulator & Level Shifter – Works with 3 V or 5 V logic and power
- Arduino Libraries – Ready-to-go with tested support
- uFL Antenna Connector – Or solder a simple wire antenna
- 50–150 mA TX Current – ~30 mA during active listening
Ideal For
- Wireless sensor networks with Arduino
- Remote control and telemetry
- Campus or farm-wide data links
- Encrypted point-to-point or multipoint communication
Resources
Jargon buster
Plain-language definitions for the technical terms used above.
- breakout
- A breakout is a small circuit board that makes a tiny or hard-to-solder component easier to connect to with standard pins. It matters because this OLED module can be wired into a microcontroller project without needing to solder directly to the display’s fine contacts.
- Headers
- Rows of metal pins used to plug a module into a breadboard or connect it with jumper wires. Pre-soldered headers make the module easier to use straight away without needing to solder the pins yourself.
- microcontroller
- A microcontroller is a small computer on a chip that runs your program and controls connected inputs and outputs. For this product, it is the part that reads buttons and sensors, drives the display and speaker, and communicates over Bluetooth.
- SMA
- A threaded coaxial connector commonly used for antennas. It matters because you need antennas with matching SMA connectors, or suitable adapters, for the LTE and GNSS antenna ports.
- SPI
- A fast serial communication bus often used for displays, memory cards, and sensors. It matters because SPI devices need specific pins for clock and data, plus a separate chip-select line for each device.
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Related Tutorials
Free guides on learn.littlebird.com.au
