Modifications

* a '''Data Receiver''' (Base Station) made with the second RFM69HCW coupled to another Pico microcontroler.

* 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'''.

As the kit contains contains two Pico microcontroller we will be able to create the "Data Emitter" on the CanSat as well as the Data Receiver at the ground station.

In this simple example:

In this simple example:

# The '''Data Emitter''' will send a message and wait 500ms for a response.

# The '''Data Emitter''' will send a message and wait 500ms for a response (ACK).

# The '''Data Receiver''' will receive the message.

# The '''Data Receiver''' will receive the message.

# The '''Data Receiver''' will send a reply.

# The '''Data Receiver''' will send a ACK reply.

[[Fichier:ENG-CANSAT-PICO-RFM69HCW-TEST-00.jpg|640px]]

[[Fichier:ENG-CANSAT-PICO-RFM69HCW-TEST-00.jpg|640px]]

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

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

# The frequency must be identical in the emitter and receiver (eg: 433.0 MHz in this example).

# The frequency must be identical in the emitter and the receiver (eg: 433.1 MHz in this example).

# The encryption key must be identical on the both side.

# The encryption key must be identical on the both side.

{{ENG-CANSAT-PICO-TRAILER}}

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