Adafruit RFM69HCW Transceiver-433Mhz Radio Breakout

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Adafruit RFM69HCW Transceiver 433Mhz Radio Breakout

These RFM69HCW Transceiver 433Mhz modules are great for use with Arduinos or other microcontrollers, say if you want a sensor node network or transmit data over a campus or town.

These radio modules come in four variants (two modulation types and two frequencies) The RFM69’s are easiest to work with, and are well known and understood. The LoRa radios are exciting and more powerful but also more expensive.

This module is the RFM69HCW in 433 MHz version! These are +20dBm FSK packet radios that have a lot of nice extras in them such as encryption and auto-retransmit. They can go at least 500 meters line of sight using simple wire antennas, probably up to 5Km with directional antennas and settings tweakings

  • SX1231 based module with SPI interface
  • +13 to +20 dBm up to 100 mW Power Output Capability (power output selectable in software)
  • 50mA (+13 dBm) to 150mA (+20dBm) current draw for transmissions, ~30mA during active radio listening.
  • Range of approx. 500 meters, depending on obstructions, frequency, antenna and power output
  • Create multipoint networks with individual node addresses
  • Encrypted packet engine with AES-128
  • Packet radio with ready-to-go Arduino libraries
  • Uses the amateur or license-free ISM band (ITU “Europe” license-free ISM or ITU “American” amateur with limitations)
  • Use a simple wire antenna or spot for uFL or SMA radio connector

All radios are sold individually and can only talk to radios of the same part number. E.g. RFM69 900 MHz can only talk to RFM69 900 MHz, LoRa 433 MHz can only talk to LoRa 433, etc.

You will need to cut and solder on a small piece of wire (any solid or stranded core is fine) in order to create your antenna. Optionally you can pick up a uFL or SMA edge-mount connector and attach an external duck.

Check out Adafruit’s fine tutorial for wiring diagrams, example code, and more!