fubarx

joined 10 months ago
[–] [email protected] 2 points 1 hour ago

Would be great if there was some explanation of the temporary unhide and how to go back to normal hide mode. Thanks!

[–] [email protected] 2 points 11 hours ago* (last edited 7 hours ago) (1 children)

Ok, I'll bite.

  1. A tiny microphone picks up your voice sound waves and turns them into a series of numbers.

  2. The sender phone turns these numbers into radio waves and sends them to the nearest radio receiver tower 'cell.' These towers are all over the place, sometimes on top of buildings, other times disguised to look like ugly trees with bad teeth.

  3. The radio in a phone is not very strong, otherwise it would fry our brain. Those radio waves can only travel a short distance (a few hundred feet to a few miles). To be able to reach farther, there are a series of relays that pass the sound numbers on to the next one until they eventually reach the closest 'cell tower' to the other person.

  4. These relays send the numbers to each other across wires, where the numbers are turned into electrical or light waves and sent quickly along.

  5. If the call is to another continent, the sound numbers are turned back into very strong radio waves and sent to a satellite in the sky, which relays it to another satellite far away over earth, which sends it down to a relay in that country, which then keeps it going.

  6. At the last cell closest to the other person, the numbers are turned back into radio waves and sent to the recipient's weak phone radio over the air. All along, the original voice numbers are kept together, hopefully the exact same ones sent.

  7. The recipient's phone has a chip that turns those numbers into sound frequencies which are then played into the ear through a small speaker. If everything worked, thouse sound frequencies are similar to the voice of the first speaker, otherwise they would sound like a duck or a sleepy panda.

  8. All this happens super fast, at a rate of millions or billions of times per second, so we barely hear the delay.

  9. Reverse the order when the other person speaks.

Now since you're five, you may wonder about all these waves or how radios work. If you ask, my answer would depend on the time of day, what else was on TV, and whether I had finished my beer.

Either way, it would involve magic.


Calvin Edit: ... there's a man inside each 'relay' box with a megaphone...

[–] [email protected] 1 points 22 hours ago

For those looking for the backstory, recommend searching for Godfrey the Hunchback, not his father Godfrey the Bearded, both being Dukes of Lower Lorraine.

And for true aficionados of privy horror, don't forget the Erfurt latrine disaster.

[–] [email protected] 2 points 22 hours ago (1 children)

Why would a song be mean to me?

[–] [email protected] 3 points 23 hours ago

Very unscientific comparison of the various drives: https://youtu.be/UyQpMH4NEtI

When he takes off on the DJI... makes it worth the watch.

[–] [email protected] 4 points 1 day ago

Our cat actually likes munching on little bits of raw greens, including spinach and broccoli.

[–] [email protected] 1 points 2 days ago (1 children)

Friend of mine recommended the book series. Went in the queue. I may have to pick up the pace and try to read them before the show drops.

He got pretty excited about the TV show after reading this: https://www.vanityfair.com/hollywood/story/murderbot-first-look

[–] [email protected] 11 points 3 days ago

Good advice, in general.

[–] [email protected] 12 points 3 days ago* (last edited 3 days ago)

Pretty expensive stylus.

[–] [email protected] 12 points 3 days ago

You can only go so far with overpriced SUVs. Put out products across all price-points and use-cases and you'll see interest go up. Especially if gas prices spike.

[–] [email protected] 3 points 3 days ago

"Excuse me. Do you have a moment to talk about our lord and savior..."

 
 
 

Archive: https://archive.ph/yNk77

"The San Francisco Giants looked destined for a quiet one-run loss after a hard battle against one of baseball’s better starters in Hunter Greene. 

They came into the ninth inning down a run and turned it into a three-run lead."

 

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.

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