If you don't already have them, you will also need soldering tools and solder. AWG22 Hook-Up Wire), or you can use a jumper wire in a pinch. About 1 foot of general-purpose wire (e.g.You'll need some wire to make antennas, and a couple of LEDs (optional) that we'll make blink when data is sent or received: 2 x Bidirectional Logic Level Converter.If you'd rather use 5V Arduinos you can, but you will need a Logic Level Converter for each 5V Arduino: We'll connect these to the Arduinos using headers and jumper wires: We're using the "Beefy 3" FTDI board, because the standard FTDI board can't supply enough current to run the RFM69: You can use the RFM69HCW with any Arduino, but the 3.3V Arduino Pro is a good choice because the RFM69HCW is also a 3.3V part. Two RFM69HCW modules (with matching frequencies): In this tutorial we'll show you how to get two modules talking to each other, but keep in mind that you can use more than two modules in your projects. (If you write example code for another system, we'll be glad to add it to the code repository). If you're using a different microcontroller, the information here plus the datasheet and the library source code should help get you up and running. This guide will cover interfacing the RFM69HCW to an Arduino microcontroller using this library. Most microcontrollers, including the Arduino, offer an SPI interface.įelix Rusu of LowPowerLab has written an excellent Arduino library for the RFM69 that handles the details of setting up the module and sending and receiving data. The RFM69HCW uses a four-wire Synchronous Peripheral Interface (SPI) plus an interrupt line. The RFM69HCW can't do anything by itself it needs to be connected to a microcontroller such as an Arduino.
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