I'm unfamiliar with radio tech but is the date being sent over these radios encrypted?
https://www.meshtastic.org/software/crypto.html#summary-of-s...
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GP's question is legitimate: with e.g. amateur radio, in the US at least, (privately) encrypted communications are legally prohibited.
Regardless, please avoid snark on HN. It does not add value to the conversation.
Encrypted digital transmission over Lora is legal in the US.
Hi! I'm one of the devs. If you have questions you might like our (friendly/helpful) forum: meshtastic.discourse.group.
Meshtastic has been talking about merging with Disaster.Radio for eons, because the two seem to have a lot of conceptual overlap. I can see uses for both feature sets and would love if they were just one thing.
It sounds like that's just not happening?
we talked about it in the early but there were some fundamental technological limitations that made it seem like not a good fit. At this point I think meshtastic is more feature complete and has lots of areas not serviced by disaster radio (ie. python API, ports to many different types of lora boards, extremely good battery life).
I think the only feature we miss wrt disaster radio is dual radio support and full DSR.
This sounds similar to this project: https://www.meshtastic.org/ which was featured on HN a few weeks ago.
https://news.ycombinator.com/item?id=22540066
I think selling it as a communicator for skiing/hiking is maybe a better idea than as a disaster radio, solely because a disaster radio is never really going to be used. If it's a useful, well used system that happens to be highly resiliant, that makes it much more likely to be available when a disaster hits.
yep - I'm one of the meshtastic devs and that was our thought as well.
* use off the shelf hardware, so user can just buy a finished device from China * make it cheap * Make something useful for people in general (without disaster) - then they will have it when the disaster happens.
punkgeek commented on We're making an open-source $30 GPS/mesh radio, would like advice meshtastic.org/... · Posted by u/punkgeek
punkgeek commented on We're making an open-source $30 GPS/mesh radio, would like advice meshtastic.org/... · Posted by u/punkgeek
punkgeek commented on We're making an open-source $30 GPS/mesh radio, would like advice meshtastic.org/... · Posted by u/punkgeek
I can see why you're using these boards, but the ESP32 is an incredibly power hungry device. For battery/solar power it's not the best choice.
For devices in the field I'd use one of the many available low power ARM controllers.
we are careful to keep the esp clock-gated almost all the time (esp calls this light-sleep), in that mode the power draw of the ESP is on 1.5mA. When the radio (or button press) receives a packet it wakes the main CPU, which then services everything (turning on bluetooth as needed) and then goes back to sleep. If you are curious for more details we have a power consumptions spreadsheet in our docs.