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→What is a Mesh network?
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.
[[Fichier:COMMON-CANSAT-RFM69HCW-broadcast.png|512px]]
[[Fichier:COMMON-CANSAT-RFM69HCW-broadcast.png|480px]]
{{underline|When to use broadcasting?}}
{{underline|When to use broadcasting?}}
* When there are max 2 persons/devices involved in the exchange
* When there are max 2 persons/devices involved in the exchange
=== What is mesh network? ===
=== What is a Mesh network? ===
Considering everybody using the same frequency and same encryption key are all on the same place:
Considering everybody using the same frequency and same encryption key are all on the same place:
* Mesh network is like everybody is using a mobile phone to contact the remittee/recipient.
* Mesh network is like everybody is using a mobile phone to contact the remittee/recipient.
* The exchange/dialog/conversation is strictly private.
* The exchange/dialog/conversation is strictly private.
* Several conversations can occurs at the same time without disturbing each other.
* Several conversations can occurs at the same time without disturbing each other.
* Anyone is still able to received a boardcast message.
* Anyone is still able to received a broadcast message.
{{ambox|text=A mesh network is more than that! It can also use an intermediate node to contact a more distant contact.}}
[[Fichier:COMMON-CANSAT-RFM69HCW-mesh.png|512px]]
[[Fichier:COMMON-CANSAT-RFM69HCW-mesh.png|480px]]
{{underline|When to use mesh network?}}
{{underline|When to use mesh network?}}
* When each person/devices in uniquely identified (this is a requirement, known as NODE_ID)
* When each person/device in uniquely identified (this is a requirement, identification known as NODE_ID).
* When there is more than two persons/devices sharing the network/area.
* When there is more than two persons/devices sharing the network/area.
* When the information must be privately exchange between 2 persons/devices
* When the information must be privately exchange between 2 persons/devices
* When communication confirmation is suited between persons/devices.
* 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 ==