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902 octets ajoutés ,  27 février 2022 à 21:41
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== Forewords ==
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It is now time to establish a communication between:
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* a '''Data Emitter''' (CanSat) made with a raspberry-Pico + RFM69HCW-433MHz.
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* a '''Data Receiver''' (Base Station) made with the second RFM69HCW coupled to another Pico microcontroler.
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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'''.
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In this simple example:
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# The '''Data Emitter''' will send a message and wait 500ms for a response.
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# The '''Data Receiver''' will receive the message.
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# The '''Data Receiver''' will send a reply.
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[[Fichier:ENG-CANSAT-PICO-RFM69HCW-TEST-00.jpg|640px]]
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As we will see, there are 2 key items will be highlighted:
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# The frequency must be identical in the emitter and receiver (eg: 433.0 MHz in this example).
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# The encryption key must be identical on the both side.
    
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