gotenna or sannet
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Is possible to create similar machine as mesh gotenna.com or https://www.kickstarter.com/projects/sonnet/sonnet-decentralized-mobile-communication and lora communications for emergency?
I need using NNTP completly offgrid. (solar panel?)
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That is totally doable. You don't even need all the ESP32 processing power to get such device up and running. Even ESP8266 might be an overkill for such a simple mesh device.
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lora have more range. wifi is not usefull for emergency communications.