BUSNET :: Level 3
This will be a re-designed version of the original BUSnet spec which was quite extensive.
However you can easily write you own level 3 "protocol" that is very simple to the point of not really being a protocol at all.
For example a node reads a voltage from a battery and transmits that reading to the network. Another node 500 metres away reads that value and displays it on an LCD.
Technically that's a protocol but it's so simple the term hardly applies.
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