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An Introduction to Meshtastic

meshtastic.org

111–120 of 192 posts

Re: An Introduction to Meshtastic

#111

I haven't messed with this yet, to me it seems like it could theoretically map all device locations, triangulating positions? Has that been addressed?

Yes, as I understand it, you choose the level of location precision to share https://meshtastic.org/docs/configuration/radio/channels/#po...

Re: An Introduction to Meshtastic

#112

Earlier quoted context omitted.

> What is the use case? It's primarily just an experimental system. Demonstrating that fixed infrastructure isn't actually necessary to communicate. Beyond that, it's a mixture of HAM radio for communicating with people outside of your immediate circle, and disaster prep. The best realistic scenario I can see for using it is after a sever weather event like hurricane, tornado, tsunami, etc. that takes out significant…

People forget that this network isnt for everyday use. It is for use in ad-hoc scenarios where cell or even satellite coverage falls apart. The most powerful aspect is that these things are deployable . A communication chain can be established as fast as people can move. Natural disasters are the most obvious use case, but more interesting are things like search and rescue. Go somewhere properly remote such as the hi…

This does not sound terribly different from the original use case for the internet. Are there similar routing algorithms in place ?

Re: An Introduction to Meshtastic

#113
post #67

If you're interested in Meshtastic, just try Meshcore instead. It's the natural hobbiest progression. Eventually you'll get tired of Meshtastic being nothing but telemetry from unknown nodes, nobody talks, it's a ghost town of weak links. Meshcore on the other hand has people actually having conversations, networks that span whole states, and diagnostic tools that actually work and are informative for describing the…

I assume there's no firmware that can speak both, or create a bridge?

Re: An Introduction to Meshtastic

#114
post #92
post #78

Earlier quoted context omitted.

I tried meshtastic but there is literally nobody around me. It's like trying to get friends to use signal. I've moved to Meshcore recently and it gets me connected to the rest of the UK. But it took me 2 dedicated repeaters. I love the meshcore homesassitant plugin, managed to setup some alerts to send out a message on a private channel every 5 minutes if I lose power as an example.

Nice to hear your experience, as it sounds similar to where i'm currently at. I'm in the south of Norway and there's not much activity on Meshcore yet. I had set up a repeater on a nearby hill, and then one Saturday I started receiving messages in the public channel. At first I thought someone was passing by in town, but I soon realized (and confirmed) that these were messages from Denmark! Some were 200+ KMs away (m…

Yes! I used that antenna coverage functionality to plan my repeater locations. It worked well.

I just picked up a T1000-E to take on holiday next week, interested if I see anything in the air of in Europe.

Re: An Introduction to Meshtastic

#115
post #67

If you're interested in Meshtastic, just try Meshcore instead. It's the natural hobbiest progression. Eventually you'll get tired of Meshtastic being nothing but telemetry from unknown nodes, nobody talks, it's a ghost town of weak links. Meshcore on the other hand has people actually having conversations, networks that span whole states, and diagnostic tools that actually work and are informative for describing the…

I don't think this is quite accurate advice. Go where the activity is. Around me, in a city of ~1.5M, the Meshtastic community is quite active. They've worked with local ham radio clubs. They have members setting up a larger mesh that stretches the state from north to south. Meshcore isn't as active, although people are experimenting with it just like Meshtastic. But because Meshtastic has more local users, that's what I would recommend to people here. Meanwhile, places like the PNW and Boston have adopted Meshcore. So I might recommend new users there to try Meshcore. It's okay to have both.

This us vs them/there must be a winner attitude that I see in both communities is really toxic and unnecessary. Look at ham radio: some people use CW, some people use SSB, some people use SSTV, some people use FT8 (but not everyone! There are still hams using other digital modes), many operators dabble in a mix of the above. There are a variety of options and nobody is pressuring other operators to use a particular mode or band.

Re: An Introduction to Meshtastic

#116
post #8

I had never heard of this before, then last week I watched a video about it and was hooked. Now I'm seeing it everywhere! Meshtastic and Meshcore are both cool LoRa-based mesh text messaging that operate in an no-license-required band. While this limits your transmit power, it doesn't prohibit encryption - the inverse of most ham radio rules! Some cities have thriving communities of Meshtastic and/or Meshcore. You ca…

So you have the mesh and then what? Do people communicate to distribute prohibited anti-government propaganda or is it a network of people who otherwise be too shy to talk to each other by other means? What is the use case?

I used to wonder the same thing and then we bought a vacation home and experienced no cell service in an area close to a major metro. It's only a 40 min highway drive outside a top 20 U.S. big city. Our street is only 12 mins drive from a major interstate highway with the usual suburban superstore sprawl (Target, WalMart, Home Depot, Costco) so it feels like we're in the middle of 'civilization'. But once you turn off the highway, that last 12 mins gets both beautiful (with rugged hills) and also very empty.

Five mins from our house suddenly cell service from all the providers gets very spotty. If you live near the top of a hill facing the right direction, you can maybe jury rig a cellular antenna on a pole. There is legacy POTS phone service via 60 year-old copper but few use it because it's only ISDN barely faster than dial-up and >$100/mo. Otherwise, there was no option for reliable residential phone/data/text service until Starlink became available in our area a couple years ago.

So everyone in our entire area has 2M radios to communicate in emergencies because in four years we've had two fires come close enough to close our roads, been snowed in twice (without power) and a small bridge got damaged in flooding blocking vehicle access in and out for four days. We can't even see any of our neighbor's houses from our property yet several times a year we need to get extremely local information from, and coordinate with, people we'd have to hike to visit. And it's usually because something is happening which takes out local power and/or road access. But the old 2M radios have to be monitored in a real-time which feels really antiquated. So, to me, inexpensive LoRa that could enable store-and-forward messaging and conditional unattended alerts suddenly sounds very useful.

Re: An Introduction to Meshtastic

#117
post #96

Earlier quoted context omitted.

ExpressLRS[0] (drone / radio control protocol) also uses LoRa, I wonder if anyone's tried mesh networking it… [0] https://www.expresslrs.org/

Russia and Ukraine both use meshed drone control networks now, dunno which tech stack, but likely this or similar.

Yeah. Actuality I was thinking about less sophisticated adversaries. So called "failed states", nonstate groups, organized crime, amateur surveillance, corporate espionage, sabotage.

Re: An Introduction to Meshtastic

#118
For people who don't think they have an immediate use for either meshtastic or meshcore, it's fine to disregard it and just dig in further into the capabilities of the LoRA radios used. They can be used fairly effectively for some very long reach serial bridge connections for telemetry and command/control of DIY IOT things and similar.

LoRA is also used extensively for hobby size UAV handheld controller/ground control station to air unit controls, and in its narrower channel sizes can be very long range. The well known TBS crossfire serial bridge radio system which predates LoRA by a number of years uses a chipset that is sort of an ancestor of current-gen LoRA stuff.

Re: An Introduction to Meshtastic

#119
post #8

I had never heard of this before, then last week I watched a video about it and was hooked. Now I'm seeing it everywhere! Meshtastic and Meshcore are both cool LoRa-based mesh text messaging that operate in an no-license-required band. While this limits your transmit power, it doesn't prohibit encryption - the inverse of most ham radio rules! Some cities have thriving communities of Meshtastic and/or Meshcore. You ca…

So you have the mesh and then what? Do people communicate to distribute prohibited anti-government propaganda or is it a network of people who otherwise be too shy to talk to each other by other means? What is the use case?

I'm using one of those devices with a tiny eink screen... as a pocket ebook reader. Sorry for the bait. Fun and easy project though, lookup Pala one if you're interested and dm me for improved firmware (restrictive license)

Re: An Introduction to Meshtastic

#120
post #98

Earlier quoted context omitted.

I set up my first node after the last major Verizon outage that rendered my cell phone useless as a mobile communications device. Now, when the next outage happens, with the always-on base station that I have at home, I can bring a portable Meshtastic radio out with me, paired to my phone via Bluetooth, and retain the ability communicate wirelessly back home, or with any of the other many nodes in the extensive netwo…

Like HAM radio: nobody needs it, until a real emergency strikes. Then everyone does.

Except the bandwidth just isn't there.
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