fubarx

joined 9 months ago
[–] fubarx@lemmy.world 1 points 3 hours ago

Thanks for the tip, will also look into ARES.

I've only taken one of the CERT classes. Will have another next week and am signed up for three more. My understanding is that CERT is targeted at civilians who form a neighborhood first response team in case official services are inaccessible or stretched thin.

The material leans heavily toward self-help (medical triage, food/water/medicine caches, etc) until help arrives. My thinking was the official channels already have access to UHF/VHF for their own comms. But CERT trainers kept repeating that if a big disaster hits, neighborhood groups should plan to make do for 10 days (and maybe up to 30) before outside help can come in.

Assuming 10 days without power, gas, or water and maybe closed roads, seemed like Meshtastic might be a good way to coordinate inside these neighborhood groups and across them.

The LilyGo T-Deck (https://lilygo.cc/products/t-deck?variant=44907372413109) with a 3D printed or IP-66/67 enclosure seems like an inexpensive civilian-friendly device to offer CERT groups without requiring a radio license. But the repeater network needs to be there and configured for redundancy. TBH, I don't know if it's a good solution, but I'm going to ask the instructors this week if there are any alternatives already in place. Meanwhile, I'm trying to learn as much as I can (hence the post).

[–] fubarx@lemmy.world 1 points 6 hours ago (1 children)

We're in earthquake terrain (a fault line runs through the middle of town). My concern would be what happens in case of a Loma Prieta scale quake. Going to do some research on fault tolerance, redundancy, and avoiding single points of failure.

Have a buddy who works at a FAANG and has been doing a lot of work on DR. He showed me a picture of his stash of prototypes. Turned out all were built on top of Meshtastic. Going to hit him up for tips next week.

[–] fubarx@lemmy.world 2 points 6 hours ago (1 children)

That's actually a great clip to show the CERT training folks here. Will share it with them this coming week at the class. Thanks!

[–] fubarx@lemmy.world 1 points 6 hours ago (3 children)

Awesome tips, thank you!

The highest peak around here has a communication tower on it. Pretty sure some of it is for municipal services. Will do research on what it will take to stick a router up there, if there isn't one already.

 

I've been taking CERT disaster relief (DR) classes, put on by the city at the local fire department (we live in an area prone to earthquake, flood, and fire). The subject of communications came up and they mentioned walkie talkies in neighborhood caches, but nobody had any idea about models, ranges, etc.

Been casually looking at Meshtastic and keep seeing it mentioned for DR, but haven't come across any actual guides or implementations. For example, I can set up a router in my house, but there's no guarantee it will be standing during a fire, or if power will remain during an earthquake.

There are lots of questions (tech, redundancy, battery backups, range, node placement, while on-the-move, temporary setups, gateways to cell and cloud, etc). Was hoping someone had already figured it out so I wouldn't have to reinvent the wheel. This would be first for my own neighborhood, then expand to city or county-wide services.

I've got another CERT class coming up next week and will ask the Fire Department folks for tips/advice as well, but thought I'd ask here about Meshtastic and maybe point them at some resources, if asked.

For research, am making my way through posts on the Meshtastic site and read the Burning Man report. Also checked out Meshmap in my area (only two routers, one on top of a mountain, but possibly on the back side of it).

FWIW, background in tech, have a ton of ESP32s, RPis, and a few LoRa boards sitting around. Was looking at getting the T-Deck, but am going to hold off until I have a proper plan on what to do with it. Also want to document the process so hopefully come up with a reusable plan. Mainly looking for tips where to look next. TIA.

[–] fubarx@lemmy.world 15 points 9 hours ago (1 children)

This shows how one company (li-cycle) that claims they recycle 95% of the lithium does it: https://youtu.be/s2xrarUWVRQ

99.99% doesn't seem too far-fetched.

[–] fubarx@lemmy.world 2 points 9 hours ago (1 children)

Not a formal audit, but a more recent review of the protocol: https://soatok.blog/2025/02/18/reviewing-the-cryptography-used-by-signal/

[–] fubarx@lemmy.world 1 points 19 hours ago

They can take Fort Ross, but they can't pry Clam Beach from our cold, dead hands.

[–] fubarx@lemmy.world 15 points 20 hours ago

My wife and I used to tag-team. Only one person got to lose it at a time. As soon as one person got that distant, exasperated look, Parent 2 jumped in and Parent 1 could go cool down, watch a show, have a drink, or take a bath. If solo, we'd use distraction and humor. If too much, you stick them in a playpen with toys and let them self-sooth.

If it's any consolation, they won't remember diddly-squat of anything that happened before ages 5-6.

[–] fubarx@lemmy.world 1 points 21 hours ago

My kid was told to fill one out, even though we knew we didn't qualify. After a LOT of paperwork, it came back with an offer of a $2K loan.

[–] fubarx@lemmy.world 1 points 21 hours ago

That last one was just people shooting at magic suits.

[–] fubarx@lemmy.world 94 points 21 hours ago* (last edited 13 hours ago) (3 children)

My first tech job out of college, I was told to go talk to "Dave," the guru old-timey programmer and learn the lay of the land. He turned out to be this crotchety old guy, with low tolerance for idiots, but a soft spot for someone who actually paid attention.

A few months in, I was told to go fix a feature in the company's main product which was sold to power utilities. This was a MASSIVE code base, with a mix of C, C++, assembler, and a bit of Fortran thrown in. I spent a week poring through all the code trying to figure things out. Then I hit a mystery workflow that didn't make sense.

I walk over to Dave's office and ask a specific question. Now, mind you, he had worked on this years ago, and had long moved on to new products. He leans back in his chair, stares at the ceiling, then without looking at the screen once tells me to go look at such and such file for such and such variable, and a list of functions that were related. I go back to my desk and damn if it wasn't EXACTLY as he described.

Now, I'm probably as old as he was then. I don't remember what I wrote an hour ago. No matter what I build, I'll always be in awe of Dave and what he could keep in his head.

[–] fubarx@lemmy.world 16 points 22 hours ago (2 children)

Getting less programmer_humor and more "I didn't get the promo" angry vibe from this.

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