LoraWAN - low-power, long-range communication

Cpt. Stud Beefpile

kiwifarms.net
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Sep 30, 2022


When #dropkiwifarms kicked off, I've went on the hunt for troon-resistant ways to communicate, especially ones that had a longer range than WiFi.

After a lot of searching I found a new-ish technology called LoraWAN which fit SOME of the bill:

In simple terms, you can understand LR to be a type of hardware that supports long range wireless communication, whereas LoRaWAN refers to a network protocol based on LR .

Together, LR & LoRaWAN allow long-range, low-power applications to be built for IoT, enabling wireless transmission over distances of up to 15km!

The only problem is it ain't exactly high-speed.

The LoRaWAN data rate ranges from 0.3 kbit/s to 50 kbit/s per channel.

Still, it has some major potential for a way to communicate significant distances without a SIM card or a traditional ISP.

Some similar technologies:

 
You're also reliant on LoRaWAN gateways (map here). Ultimately its main purpose is a way to deploy IOT devices without needing WiFi (short-range, relatively power hungry) or cellular (relatively high ongoing cost) to get you on the Internet. Speed isn't really an issue when you're only sending small amounts of data to a HTTP or MQTT endpoint.

Adafruit make some nice-looking LoRa breakouts and Raspberry Pi add-ons if you want to play around with it.
 
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I bought some LoraWAN enabled microcontrollers to play around with a while back. In terms of things I think it and similar radio technologies might be useful for:
1) Giving remote 'Man down' personal safety devices and security alarms in industrial/forestry environments more range. Simple 433mhz alarm protocols are like, OK, for a small house, and very cheap, but more range is good.
2) Assisting in exploitation of computer systems after physically placing a LoraWAN device , whether in pentests or some other purpose. Yeah, you'll have to wait a long time if you're extracting data over the radio channel, but a few kbps is more than enough for serial terminal access.
3) MAYBE extended range drone operation? Let's suppose you're operating a drone beyond visible range, possibly illegally. You could use LoraWAN or a similar extended-range radio to send waypoints through dynamically, and have the drone automatically return to home base if it loses contact with the extended range base station.
 
2) Assisting in exploitation of computer systems after physically placing a LoraWAN device , whether in pentests or some other purpose. Yeah, you'll have to wait a long time if you're extracting data over the radio channel, but a few kbps is more than enough for serial terminal access.

Serial terminal access to a connected SBC or IoT device, even the ones the size of a pack of Wrigley's, opens up more possibilities than i can begin to name and many of which I should probably not discuss.

How much weight can the average drone carry, these days?
 
Serial terminal access to a connected SBC or IoT device, even the ones the size of a pack of Wrigley's, opens up more possibilities than i can begin to name and many of which I should probably not discuss.

How much weight can the average drone carry, these days?
Quite a lot depending on the size and type. For multirotors there are commericial grade rigs built to carry RED type cinema equipment but those cost as much as a car. Something more reasonable would be an 8in (prop diameter) frame which has a payload of ~2kg. If fixed wing there are many great airframes to choose from. Favorites are ones like the Talon/Mini Talon, Volantex Ranger series, and RMRC Anaconda. These can all carry a decent payload of a couple gopro sized cameras but it can vary depending on the battery capacity you put in.
 
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