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While trying to find what actually interests me these days I've found myself diving down a rabbit-hole of pretty neat, IP-over-radio projects. Most use fairly cheap ESP32s or similar microcontrollers for LoRA.
Consider a peaceful protest, under an authoritarian government and controlled tv/radio networks that responds with localised internet/mobile network shutdowns or just a major earthquake or other disaster that takes out power; How could people keep informed or organise to get help where it's needed?
This one guy's built an interesting ultra-low-bandwidth/high-latency network stack, Reticulum, for secure mesh networks. There's a mobile app, Sideband, that connects to a radio using bluetooth/USB and allows text chat with end-to-end encryption over a meshnet of radio/internet Reticulum nodes. If you're unreachable, messages are re-transmitted later. You can also send a broadcast message.
Albeit, with a 15 minute login, he managed SSH over a 15 mile radio link with two of these RNodes
https://unsigned.io/rnode/
https://unsigned.io/guides/2022_03_2...over-lora.html
There's also Meshtastic, with similar encrypted text chat over LoRA meshnet. What could be especially fun to play around with is using it with a self-hosted ATAK or CIV ATAK server (a "situational awareness tool for tactical engagements").
ATAK looks simple enough to add GPS trackers, tag a location with an rstp camera stream (internet needed to watch this, not just radio), or people even seem to use it with drones (military and toys) for waypoints/camera footage and guidance.
ATAK+Meshtastic video
Armachat's pretty cool too, for a pure chat device with built-in keyboard.
Is there any similar tech that peaked some interest for you recently? Not necessarily radio, anything security/privacy/crypto.
Consider a peaceful protest, under an authoritarian government and controlled tv/radio networks that responds with localised internet/mobile network shutdowns or just a major earthquake or other disaster that takes out power; How could people keep informed or organise to get help where it's needed?
This one guy's built an interesting ultra-low-bandwidth/high-latency network stack, Reticulum, for secure mesh networks. There's a mobile app, Sideband, that connects to a radio using bluetooth/USB and allows text chat with end-to-end encryption over a meshnet of radio/internet Reticulum nodes. If you're unreachable, messages are re-transmitted later. You can also send a broadcast message.
Albeit, with a 15 minute login, he managed SSH over a 15 mile radio link with two of these RNodes
https://unsigned.io/rnode/
https://unsigned.io/guides/2022_03_2...over-lora.html
There's also Meshtastic, with similar encrypted text chat over LoRA meshnet. What could be especially fun to play around with is using it with a self-hosted ATAK or CIV ATAK server (a "situational awareness tool for tactical engagements").
ATAK looks simple enough to add GPS trackers, tag a location with an rstp camera stream (internet needed to watch this, not just radio), or people even seem to use it with drones (military and toys) for waypoints/camera footage and guidance.
ATAK+Meshtastic video
Armachat's pretty cool too, for a pure chat device with built-in keyboard.
Is there any similar tech that peaked some interest for you recently? Not necessarily radio, anything security/privacy/crypto.
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