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1 258 octets ajoutés ,  6 mars 2022 à 02:42
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It can quickly become a cacophony, even in the hertzian area. Broadcasting is not an efficient way to communicates.
 
It can quickly become a cacophony, even in the hertzian area. Broadcasting is not an efficient way to communicates.
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[[Fichier:COMMON-CANSAT-RFM69HCW-broadcast.png|512px]]
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[[Fichier:COMMON-CANSAT-RFM69HCW-broadcast.png|480px]]
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{{underline|When to use boardcasting:}}
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{{underline|When to use broadcasting?}}
*
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* When the message must be send to anyone (like a "Panic" message).
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* When there are max 2 persons/devices involved in the exchange
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=== What is a Mesh network? ===
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Considering everybody using the same frequency and same encryption key are all on the same place:
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* Mesh network is like everybody is using a mobile phone to contact the remittee/recipient.
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* Everybody has a unique phone number (a NODE_ID) used to contact him.
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* The exchange/dialog/conversation is strictly private.
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* Several conversations can occurs at the same time without disturbing each other.
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* Anyone is still able to received a broadcast message.
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{{ambox|text=A mesh network is more than that! It can also use an intermediate node to contact a more distant contact.}}
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[[Fichier:COMMON-CANSAT-RFM69HCW-mesh.png|480px]]
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{{underline|When to use mesh network?}}
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* When each person/device in uniquely identified (this is a requirement, identification known as NODE_ID).
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* When there is more than two persons/devices sharing the network/area.
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* When the information must be privately exchange between 2 persons/devices
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* When acknowledgment are suited in the communication.<small><br />Indeed, we have to know the number of each other (NODE_ID) to callback for acknowledgement).</small>
    
== Power Pins ==
 
== Power Pins ==
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