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I am trying to design and build a radio frequency mesh network of Arduino Nano + ENC28J60 + LoRa SX1278 distributed over a roughly 10km^2 campus.

The Nano + 28J60 + SX1278 would be used as base stations in a mesh topology but also configured (separate device) as clients within range of at least two base stations at each point in time.

The aim is to transmit a message which can be broadcast to each base station and, subsequently, each client in the Ethernet network — all within a fraction of a second.

I am fairly familiar with TCP/IP.

The challenge I face is the apparent lack of documentation or relevant examples in the Ethercard Arduino library for my application.

I am also unable to simultaneously simulate more than one ENC28j60 module in Proteus which I suspect is because I have no server configured or connected.

The following error occurs although WinPcap is installed:

Cannot get network adapters list: No interfaces found! Make sure libpcap/WinPcap is properly installed on the local machine.

So, my question is, how do I go about simulating and building this circuit?

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    \$\begingroup\$ You're going about this the wrong way. Mesh topology LoRa networks will be very challenging to get right. Typically, LoRa is used in a gateway/node model, and the gateways need to be more sophisticated multi-channel units based on the SX1301 with RF front ends, not the SX1276/8. See the LoRaWAN spec, The Things Network, etc. \$\endgroup\$ – Chris Stratton Dec 10 '18 at 18:37

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