ENG-CANSAT-PICO-RFM69HCW-TEST

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Forewords

It is now time to establish a communication between:

  • a Data Emitter (CanSat) made with a raspberry-Pico + RFM69HCW-433MHz.
  • a Data Receiver (Base Station) made with the second RFM69HCW coupled to another Pico microcontroler.

As the kit contains only one micro controller (the Feather M0 Express), we will use the very common Arduino UNO (not included) as micro controller for the Data Receiver.

In this simple example:

  1. The Data Emitter will send a message and wait 500ms for a response.
  2. The Data Receiver will receive the message.
  3. The Data Receiver will send a reply.

 

As we will see, there are 2 key items will be highlighted:

  1. The frequency must be identical in the emitter and receiver (eg: 433.0 MHz in this example).
  2. The encryption key must be identical on the both side.

Written by Meurisse D. for MCHobby


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